School of Aeronautics and Astronautics 1999-2000 Research Report

Summary

This annual report highlights the academic achievements, research developments, faculty profiles, publications, sponsored research projects, and curriculum offerings of Purdue University’s School of Aeronautics and Astronautics for the 1999-2000 academic year. It covers primary discipline areas including Aerodynamics, Dynamics & Control, Propulsion, and Structures & Materials.

TABLE OF CONTENTS

OUR MISSION… 2 ACADEMIC HIGHLIGHTS … 2 ENROLLMENT AND DEGREES AWARDED … 3 DEVELOPMENT HIGHLIGHTS … 3 PUBLICATIONS … 4 CO-OP PROGRAM… 4 FACULTY FOR THE 1999-2000 ACADEMIC YEAR… 6 OVERVIEW OF RESEARCH AREAS AND FACILITIES… 8 FACULTY SUMMARY … 12 AERODYNAMICS … 13 DYNAMICS & CONTROL … 29 PROPULSION… 43 STRUCTURES & MATERIALS … 48 ACTIVE RESEARCH PROJECTS … 67 RESEARCH AND OTHER SCHOLARLY ACTIVITIES… 68 GRADUATE THESES … 73 COLLOQUIUM SERIES… 77 FACULTY HIGHLIGHTS … 80 STUDENT HIGHLIGHTS… 80 ALUMNI HIGHLIGHTS… 81 OUTREACH HIGHLIGHTS … 81 CHALLENGES AND OPPORTUNITIES … 82 CURRICULUM AND COURSE OFFERINGS… 83

Our Mission and Academic Highlights

OUR MISSION

Established as an independent school on July 1, 1945, the School of Aeronautics and Astronautics is committed to be a world-class leader in aerospace engineering education and fundamental and breakthrough research for aerospace vehicles and systems. Our mission of preparing men and women to be leaders in aerospace engineering by providing exceptional education and research programs for them is the focus of our life’s work.

ACADEMIC HIGHLIGHTS

The School of Aeronautics and Astronautics continued its push for excellence with a year that was successful by any measure. AAE maintains a commitment to be a world-class leader in aerospace engineering education and research. Our faculty is dedicated to preparing young men and women to be leaders in aerospace engineering, and our students and graduates are proving that our goal is being achieved. Others observe our success, as well. The U.S News and World Report ranked our graduate program sixth in the nation and our undergraduate program fifth.

New courses were added to keep our program fresh. The first offering of Introduction to Satellite Systems was offered as part of the development of the new Center for Satellite Engineering (CSE). Design activities for the 2nd year and beyond were formulated as part of the educational goals for the CSE. Industrial Practices Seminar, Multidisciplinary Design Optimization, and a new dual-level course, Aeroacoustics, were also added to the AAE curriculum this past year. AAE 490C Satellite Attitude Dynamics was taught for the first time as part of our expanding Astronautics curriculum.

The enrollment and number of graduates continue to rise. During the 1999-2000 academic year, 43 students earned their Bachelor of Science degree, 35 earned their Master of Science degree, and 9 were awarded their Doctor of Philosophy degrees. These numbers are projected to climb, based on current enrollment and the indication of incoming students.

Purdue University remains an attractive destination for international students. This past school year saw Purdue lead all public research institutions in total number of international students enrolled. This trend is evident at AAE, also, with international students comprising 13% of undergraduates, 52% of Masters level, and 69% of Ph.D. level students.

The Colloquium Series offered by the School of Aeronautics and Astronautics, presents world-renowned experts on a wide-range of topics related to aerospace engineering, sciences, and research. As part of this year’s series, seventeen speakers from academia, industry, and government, shared their work and wisdom.

Enrollment, Degrees Awarded, and Development Highlights

ENROLLMENT AND DEGREES AWARDED

The School had 238 undergraduate students (excluding freshmen) beginning the Fall of 1999 representing a 25% increase over 1998. Graduate enrollment was 136, with 64 students in the M.S. Program and 72 in the Ph.D. program. A summary of degrees awarded is given below for the past five years. Master’s and Ph.D. theses published during the 1999-00 academic year are summarized in the Graduate Theses section.

Degrees Awarded School of Aeronautics & Astronautics Year: 95-96 | 96-97 | 97-98 | 98-99 | 99-00 B.S.: 78 | 48 | 40 | 43 | 43 M.S.: 36 | 30 | 19 | 21 | 35 Ph.D.: 13 | 17 | 14 | 11 | 9

DEVELOPMENT HIGHLIGHTS

Industry support of the School remains strong. Allied Signal (now Honeywell), The Boeing Company, Hughes Space and Communications, Lockheed Martin, Northrop Grumman, Rolls-Royce Allison, Thiokol, and TRW are members of the Industrial Affiliates Program (IAP).

Our most direct contact with industry is through the Industrial Advisory Council (IAC). Their continued input assists in shaping our future. One recommendation that came to fruition was Industry Day. The faculty and students had an opportunity to highlight research activities and meet one-on-one with representatives from the aerospace industry. This event will be held again, in fall 2000.

The first William E. Boeing Distinguished Lecture was held on September 29, 1999. Mike Sears, President of Boeing’s Military Aircraft Division, was the inaugural speaker. Roy D. Bridges, Jr. (M.S. AAE ’66, DEA ’98, OAE ’99), Director of Kennedy Space Center and former astronaut, is scheduled to present the 2nd Boeing Distinguished Lecture on October 26th, 2000, at 3:00 P.M. in Fowler Hall.

Financial support of our School was highlighted by some very generous gifts to establish endowments for scholarships, fellowships, and a distinguished professorship. John Rich (B.S. AAE ’54) endowed the John and Patricia Rich Scholarship and Fellowship. Gary (M.S. AAE ’72, OAE ’99) and Sue Payton made a gift to begin the Gary and Sue Payton Scholarship. Mrs. Kiahsuang Lo, widow of former head of the School of Aeronautics, Professor Hsu Lo, made a seed gift establishing the Hsu Lo Fund for scholarships and fellowships. Mrs. Lo corresponded with friends and former colleagues of Professor Lo’s to request their support of the fund. James (B.S. AAE ’61, DEA ’79, OAE ‘99) and Sherry Raisbeck endowed the Raisbeck Engineering Distinguished Professorship for Engineering and Technology Integration. This position is to be one that will bridge Aeronautical Engineering and Aviation Technology.

Publications and Co-Op Program Overview

PUBLICATIONS

Listings of books, journal articles, and other printed conference papers and reports published in calendar year 1999 are given in the “Faculty Summary” section of this report. Only documents that actually appeared in print during 1999 are listed. Note that 24 journal articles or book chapters, and 124 conference papers or technical reports, were presented or published. In addition to the published technical reports listed, many other technical progress reports were submitted directly to project sponsors.

CO-OP PROGRAM

During the 1999-00 academic year, 71 students were enrolled in the Cooperative Engineering Program with the 23 companies listed below. This popular program is limited only by the number of industry positions available. About 29 in 74 new applicants received appointments this year. Many other students gain industrial experience through internships.

Co-Op Companies

Co-Op Companies School of Aeronautics and Astronautics July 1, 1999-June 30, 2000

Faculty for the 1999-00 Academic Year

FACULTY FOR THE 1999-00 ACADEMIC YEAR

Aerodynamics G. A. Blaisdell, Associate Professor, Ph.D., Stanford, 1991, computational fluid mechanics, transition and turbulence. S. H. Collicott, Associate Professor, Ph.D., Stanford, 1991, experimental and low-gravity fluid dynamics, optical diagnostics, applied optics. A. S. Lyrintzis, Associate Professor, Ph.D., Cornell, 1988, computational aeroacoustics, aerodynamics for rotorcraft and jet flows. S. P. Schneider, Associate Professor, Ph.D., Caltech, 1989, experimental fluid mechanics, high-speed laminar-turbulent transition. J. P. Sullivan, Professor, Sc.D., MIT, 1973, experimental aerodynamics, propellers, laser-doppler velocimetry. M. H. Williams, Professor and Associate Head, Ph.D., Princeton, 1975, aerodynamics, computational fluid mechanics.

Dynamics and Control D. Andrisani II, Associate Professor, Ph.D., SUNY at Buffalo, 1979, estimation, control, dynamics. M. J. Corless, Professor, Ph.D., Berkeley, 1984, dynamics, systems, control. A. E. Frazho, Professor, Ph.D., Michigan, 1977, control systems. K. C. Howell, Professor, Ph.D., Stanford, 1983, orbit mechanics, spacecraft dynamics, control; trajectory optimization. J. M. Longuski, Professor, Ph.D., Michigan, 1979, spacecraft dynamics, orbit mechanics, control, orbit decay and reentry. M. A. Rotea, Associate Professor, Ph.D., Minnesota, 1990, robust and nonlinear multivariable control, optimization, system identification.

Propulsion S. D. Heister, Professor, Ph.D., UCLA, 1988, rocket propulsion, liquid propellant injection systems. J. J. Rusek, Assistant Professor, Ph.D., Case Western Reserve, 1983, experimental energy conversion and rocket propulsion.

Structures & Materials W. A. Crossley, Assistant Professor, Ph.D., Arizona State, 1995, optimization, rotorcraft and aircraft design, structure design. J. F. Doyle, Professor, Ph.D., Illinois, 1977, structural dynamics, experimental mechanics, photomechanics, wave propagation. H. D. Espinosa, Associate Professor, Ph.D., Brown, 1992, micromechanics of ceramics and composites, experimental and computational mechanics T. N. Farris, Professor and Head, Ph.D., Northwestern, 1986, tribology, manufacturing processes, fatigue and fracture. A. F. Grandt, Jr., Professor, Ph.D., Illinois, 1971, damage-tolerant structures and materials, fatigue and fracture, aging aircraft. C. T. Sun, Professor, Ph.D., Northwestern, 1967, composites, fracture and fatigue, structural dynamics. T. A. Weisshaar, Professor, Ph.D., Stanford, 1971, aircraft structural mechanics, aeroelasticity, integrated design.

Professor H. D. Espinosa left Purdue to join Northwestern University as an Associate Professor of Mechanical Engineering. Professor J. L. Garrison accepted an offer to join Purdue as an Assistant Professor in the Dynamics and Controls area beginning with the 2000-2001 academic year. His interests include satellite navigation and remote sensing. He obtained a Ph.D. in Aerospace Engineering Sciences from the University of Colorado and has been working at NASA Goddard.

Overview of Research Areas and Facilities

OVERVIEW OF RESEARCH AREAS AND FACILITIES

Excellent computational facilities are available at Purdue University and include a recently (Summer 2000) upgraded 272-node IBM SP-2.

In Spring ’98 with the support of the Boeing Company and the Intel Corporation, the School was able to build its new Design/Build/Test Laboratory, which will prepare students for the integrated teams that industry uses for better design and reduced cycle time. The laboratory received use from many of our students during the inaugural year and DBT projects were performed by the 451 Capstone Design class, 520 Experimental Aerodynamics course, and individual special projects.

In addition, many workstations and personal computers are located throughout the School of Aeronautics and Astronautics. High performance computing is available using multiple IBM RS/6000, Silicon Graphics and Sun Microsystems computers. Cluster computing, using single and dual Intel Pentium II and III systems, is a recent addition, complementing the main Sun Microsystems compute servers.

AERODYNAMICS Aerodynamics research is directed toward a better understanding of the fundamental laws governing the flow of fluids. Research topics of recent interest include: numerical methods in aerodynamics; computational fluid mechanics; separated flow around wings and bodies at high angles of attack; aerodynamics of rotors and propellers; boundary layers, wakes and jets in V/STOL applications and aerodynamic noise; experimental measurements using laser systems; laminar-turbulent transition in high speed boundary layers.

Experimental facilities include four wind tunnels located at the Aerospace Sciences Laboratory (ASL). The Boeing Wind Tunnel is a large subsonic wind tunnel with two test sections — a closed 4-by-6 foot section with a maximum speed of 250 miles per hour and a long test section adapted for high-lift research. The first test section is equipped with a six-component motorized pitch-and-yaw balance system. Instrumentation includes a two-component laser Doppler velocimeter system and a computer data acquisition system.

Three smaller low-speed wind tunnels are also located at ASL. One has an 18-inch diameter test section, and the other two have test sections of 12 by 18 inches. Several small calibration tunnels are also available, along with a small water table.

Three small high-speed facilities are located in the Boeing Compressible-Flow Laboratory. The first is a 2-inch Mach-2.5 blowdown tunnel, and the second is a one-inch supersonic jet apparatus, designed for nozzle-flow studies. Both can be operated in pressure-vacuum mode, and are used primarily for teaching. The jet apparatus also includes a heater and particle filter, to enable supersonic hot-wire calibrations. A 4-inch shock tube is also available.

Lastly, the Boeing Compressible-Flow Laboratory also includes two large Ludwieg tubes. The first has a 4-inch Mach-4 test section, and remains quiet to a length Reynolds number of about 400,000. The second, which is nearing completion, will have a 9.5-inch Mach-6 quiet-flow test section. Instrumentation is specialized for study of laminar-turbulent instability and transition, and includes high-speed hot wires, fast-response pressure transducers, hot-film arrays and anemometers, a high-sensitivity laser-differential interferometer, a glow-discharge perturber, and a pulsed laser perturber.

DYNAMICS AND CONTROL All modern aerospace vehicles rely upon an understanding of dynamics and control to improve system performance. Successful system design requires an understanding of the interactions of dynamic elements, and the trade-offs between vehicle dynamic characteristics, control system properties, and system performance.

Current research is divided into the following areas: aircraft design for improved handling qualities, astrodynamics, robust and nonlinear control theory and applications, estimation theory and applications, dynamics and control of flexible spacecraft, mission design, modeling and control of aeroelastic aircraft, spacecraft maneuvers and trajectory analysis and optimization.

Certain research projects and teaching activities require advanced and specialized laboratory facilities. The Control Systems Laboratory (CSL) contains high-end workstations. The mission of the CSL is to develop methods and tools (software) for the analysis and design of complex dynamical systems and to promote the availability and use of the methods by teaching relevant courses and interacting with industry. Experiments used for undergraduate instruction include a two-degree-of-freedom helicopter experiment, a three-degree-of freedom rotational system to emulate the attitude dynamics of a flexible spacecraft, and an inverted pendulum. Remotely Piloted Vehicle, currently under development, represents a unique research facility upon which to perform many experiments in vehicle dynamics and control. Data communication with a computer based ground station is provided by a seven channel telemetry downlink.

PROPULSION The Propulsion group has unique facilities which are highly beneficial for the study of rocket propulsion and energy conversion. Laboratories are housed at Grissom Hall and at two major remote campus facilities: the Maurice Zucrow Laboratory (MZL), and the Aerospace Sciences Laboratory (ASL).

The Aerospace Post-Processing and Visualization Laboratory contains a variety of high-end computational assets. Several Silicon Graphics workstations are available for general computing, graphical visualizations, and digitization of images on videotape. In addition, a cluster of dual-chip Pentium machines running in a LINUX environment provides a resource for parallel computations of a significant scale.

The Propulsion and Power Laboratory is housed at MZL, and is comprised of two test cells. The test cells are of poured, reinforced concrete design with containment steel doors and explosive rated viewing windows. These cells are classed for both Class 1.1 and 1.3 explosives and are equipped with a frangible blowout wall, in case of major catastrophic events. Test Cell A currently contains a rocket thrust stand capable of handling thrust loads of up to 1000 lbf. Test Cell B will be outfitted to conduct turbine flow measurements using simulated PV drivers and catalytic chamber effluent. In local proximity is a dedicated oxidizer storage building, and a dedicated explosive / propellant storage bunker, rated for Class 1.1 materials.

The Energy Conversion Laboratory is housed at ASL, and is comprised of large four-function work areas. The Propellant Area is set up to synthesize and enrich / analyze Non-Toxic Hypergolic Miscible Fuels and Rocket Grade Hydrogen Peroxides, respectively. The Electrochemistry Area is designed to study the formation of hydrogen peroxide from water and electrical energy. The decomposition of hydrogen peroxide within a fuel cell is also studied in this laboratory. The Physical Energy Conversion Area was established to study thermoelectric and thermionic effects, as well as advanced ion thruster technologies. The Catalysis Area is used to synthesize and characterize heterogeneous and homogeneous substrates and additives for propulsion applications.

STRUCTURES AND MATERIALS Structures and materials research includes work in composite materials, computational structural mechanics, damage tolerance analysis, experimental structural analysis, structural mechanics and aeroelasticity, tribology, manufacturing, wave propagation, smart materials and structures, and optimal design methods.

The McDonnell Douglas Composite Materials Laboratory contains equipment and facilities for general material testing and for fabrication of composite laminates. An autoclave specially designed for curing epoxy-matrix composites is available for laminate fabrication. A hot press is used for forming thermoplastic composites, and an EnTec filament winding machine is available for making cylindrical composite structures. A water jet cutting machine is used for specimen preparation. Four complete MTS material and fatigue testing machines (55 kip, 22 kip, 11 kip, and 1 kip capacity) and associated equipment are used to perform ultimate strength, stiffness, and fatigue tests on various composite materials. Nondestructive inspection equipment includes an x-ray machine and an ultrasonic C-scan system. Additional facilities for preparing laminated composites, impact testing, and creep testing are available.

The Fatigue and Fracture Laboratory is well-equipped conduct structural integrity motivated research directed at evaluating the damage tolerant properties of materials and components. Two computer-controlled electro-hydraulic test machines (11,000 and 22,000 lb. capacity) and associated equipment are used to measure fracture loads and to study fatigue crack formation and propagation in test specimens subjected to simulated aircraft or spacecraft load histories. Facilities are also available to artificially corrode specimens in connection with corrosion and/or corrosion/fatigue related research, and to perform nondestructive inspections by magnetic particle and dye penetrant methods.

The Structural Dynamics Laboratory has the latest equipment for recording ultra-dynamic events. Major equipment includes Norland and Nicolet digital recorders, a one-million-frame-per-second dynamic camera, impact gun, and various computer peripherals for data acquisition. The primary research interest is in the impact of structures and the analysis of consequent stress waves.

The Tribology and Materials Processing Laboratory, maintained jointly with the Center for Materials Processing and Tribology contains tribological instrumentation as well as up-to-date machines for manufacturing processes. Equipment includes a 22 kip computer-controlled electro-hydraulic test machine and associated equipment for fretting fatigue testing at room and elevated temperatures, infrared sensors for full-field temperature measurements, a friction apparatus for both low and high speed sliding indentation, lapping and polishing equipment, a vibration isolation table, micropositioning stages, a sliding wear experiment, Talysurf profilometers, phase shift interferometric profilometer, an atomic force microscope, a nanoindenter, a talysurf instrument for measurements of form, cylindricity cuts and taper, an SEM and optical microscopes. A piezo-electric based load frame has been constructed to perform high frequency fretting fatigue experiments related to HCF of aircraft engines. Also, access is available to a variety of machine tools a precision high speed surface grinder, a centerless grinder, and a super finishing machine, as well as associated piezoelectric force transducers.

Faculty Summary - Aerodynamics: Gregory A. Blaisdell

GREGORY A. BLAISDELL 1991 Associate Professor

Degrees: B. S., California Institute of Technology, Applied Mathematics, 1980 M. S., California Institute of Technology, Applied Mathematics, 1982 Ph.D., Stanford University, Mechanical Engineering, 1991

Interests: Computational fluid mechanics Transition and turbulence

Awards and Major Appointments: NASA-ASEE Summer Faculty Fellowship, 1995-1996 W. A. Gustafson Teaching Award, Fall 1997

Research Areas: Current research interests involve the study of transitional and turbulent fluid flows using computational fluid dynamics (CFD) as an investigative tool. Most flows of engineering interest are turbulent and turbulence has a significant impact on the performance of engineering systems. The drag on a body is generally much greater if the boundary layer is turbulent. Turbulence also increases heat transfer between a fluid and a surface. In addition, turbulent mixing is important to combustion.

The physics of basic turbulent flows are studied using direct numerical simulations (DNS) and large-eddy simulations (LES). With LES the motion of the largest eddies are solved for directly while the effects of the unresolved small scale eddies are modeled. In contrast, with DNS all the relevant length scales within the turbulence are resolved and no modeling is needed. The results of the simulations are used to increase our understanding of turbulence and to test and improve turbulence models.

Current research projects are described below. Many of these investigations are being carried out using parallel processing computers. Parallel computing and advanced numerical methods is another area of interest.

Faculty Summary - Aerodynamics: Steven C. Collicott

STEVEN C. COLLICOTT 1991 Associate Professor

Degrees: B. S., University of Michigan, Aerospace Engineering, 1983, magna cum laude M. S., Stanford University, Aeronautics & Astronautics, 1984 Ph.D., Stanford University, Aeronautics & Astronautics, 1991

Interests: Experimental fluid mechanics Low-gravity fluid dynamics Optical diagnostics Applied optics

Awards and Major Appointments: Presented the American Institute of Aeronautics and Astronautics “Special Service Citation,” March 1997

Research Areas: Four topics are being researched: high-bypass turbofan duct-strut flow, cavitation in spray orifices, low-gravity fluid dynamics, and optical methods for studying hypersonic boundary layer transition.

Publications:

Moses, M., Collicott, S. H., and Heister, S. D., “Detection of Aerodynamic Effects in Liquid Jet Breakup and Droplet Formation,” Atomization and Sprays, Vol. 9, No. 4, July-Aug. 1999, pp. 331-342.
Bunnell, R. A., Heister, S. D., Yen, C., and Collicott, S. H., “Cavitating Injector Flows: Validation of Numerical Models and Simulations of Pressure Atomizers,” Atomization and Sprays, Vol. 9, No. 5, Sep.-Oct. 1999, pp. 455-466.

Conference Proceedings, Presentations and Invited Lectures:

Collicott, S. H., “Convergence Behavior of Surface Evolver Applied to a Generic Propellant Management Divide,” AIAA paper 99-0845, 37th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999, 11 pages.
Li, H., and Collicott, S. H., “Initial Images of Cavitation Inside High-Pressure Atomizers,” Institute for Liquid Atomization and Spray Sciences, ILASS-Americas 99, Indianapolis, IN, May 1999, 5 pages.
Chandra, B. W., and Collicott, S. H., “Experimental Investigation of Cavitation Frequency in a Slot Orifice,” Institute for Liquid Atomization and Spray Sciences, ILAS Americas 99, Indianapolis, IN, May 1999, 5 pages.
Sanchez, P. K., and Collicott, S. H., “Statistics of Cavitation in Length in a 2-D Slot Orifice,” Institute for Liquid Atomization and Spray Sciences, ILASS-Americas 99, May 1999, 5 pages.
Ambrose, J., Yendler, B., and Collicott, S. H., “Modeling of Spacecraft Propellant Gauging System,” Society of Automotive Engineers, 1999 IECEC, Vancouver, BC, July 1999.
Schultz, J. D., and Collicott, S. H., “Effects of Particulates on Cavitation in a 2-D Slot Orifice,” poster presentation at Institute for Liquid Atomization and Spray Sciences, ILASS-Americas 99, Indianapolis, IN, May 1999.
Schmisseur, J. D., Schneider, S. P., and Collicott, S. H., “Response of the Mach-4 Boundary Layer on an Elliptic Cone to Laser-Generated Freestream Perturbations,” AIAA paper 99-0410, presented at the 37th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999, 14 pages.

Faculty Summary - Aerodynamics: Anastasios S. Lyrintzis

ANASTASIOS S. LYRINTZIS 1994 Associate Professor

Degrees: Diploma, National Technical University, Athens Greece, Mechanical Engineering, 1981 M.S., Cornell University, Aerospace Engineering, 1985 Ph.D., Cornell University, Aerospace Engineering, 1988

Interests: Computational Aeroacoustics Aerodynamics for rotorcraft and jet flows

Awards and Major Appointments: AHS (American Helicopter Society), Acoustics Committee AIAA Aeroacoustics, Technical Committee; Awards Subcommittee (Chairman 96-97) ASME: coordinating group for CFD Associate Fellow AIAA

Research Areas: i) Jet Aeroacoustics: The success of NASA’s efforts to reduce aircraft noise depends on improved jet noise prediction. We are investigating the use of integral techniques (e.g. Kirchhoff’s method, Ffowcs-Williams Hawkings equation method) for the extention of CFD results to the acoustic far-field. Including acoustic sources outside the computational domain as well as refraction corrections is also investigated. ii) Transonic Helicopter Impulsive Noise: In the recent years, the increasing use of helicopters has drawn attention to the noise that they generate. Among the several types of helicopter noise, impulsive noise (i.e. Blade Vortex-Interactions (BVI) and High-Speed Impulsive (HSI)) is the most important. Our current research focuses in the formulation of a prediction model for impulsive noise for hovering and advancing rotors using the Kirchhoff technique for the far-field. Noise reduction techniques are also investigated. iii) Efficient Transonic Flow Calculations: With the advent of parallel computers, development of efficient parallel CFD algorithms is needed. An efficient algorithm to parallelize the popular LU-SGS (Lower Upper -Symmetric Gauss Seidel) implicit operator for unsteady Euler equations has been developed. The algorithm was applied on the rotorcraft aerodynamics code TURNS (Transonic Unsteady Rotor Navier-Stokes) for the Euler equations mode of the parallel IBM SP-2 machine. The method is currently being extended to Navier Stokes equations, as well as overset grid methodologies (e.g. OVERFLOW code).

Faculty Summary - Aerodynamics: Steven P. Schneider

STEVEN P. SCHNEIDER 1989 Associate Professor

Degrees: B. S., California Institute of Technology, Engineering & Applied Science, with Honors, 1981 M. S., California Institute of Technology, Aeronautics, 1984 Ph.D., California Institute of Technology, Aeronautics, 1989

Interests: Experimental fluid mechanics High-speed laminar-turbulent transition

Research Areas: High-speed laminar-turbulent transition is critical for applications including hypersonic reconnaissance vehicles, thermal protection for re-entry vehicles, drag reduction on supersonic transports, and flow noise and heat transfer above IR windows on interceptor missiles. Unfortunately, nearly all existing high-speed experimental results are contaminated by facility noise, such as that radiating from the turbulent boundary layers normally present on the test-section walls of supersonic tunnels. Just as at low speeds, reliable experimental progress requires low-turbulence wind tunnels with noise levels comparable to those in flight.

Sponsored Research Summaries: NASA Langley has developed quiet supersonic tunnels over the last 25 years to address problems such as laminar-turbulent transition that are strongly affected by noise level. Detailed measurements of the mechanisms of transition are needed, under low noise conditions, in order to develop computational models that are grounded on the correct flow physics. To complement the expensive quiet-flow facilities under development at NASA Langley, a low-cost 4-inch Mach 4 quiet-flow Ludwieg tube has been constructed at Purdue. Quiet flow has been demonstrated to length Reynolds numbers of 400,000 (AIAA Journal, April 1995, p. 688). Localized hot-spot disturbances are repeatably generated by a pulsed Nd:YAG laser in order to generate repeatable wave packets in the flow, and surface perturbations are being generated by a glow perturber. Perturbations are being measured using hot wires, high-sensitivity laser differential interferometry, and arrays of surface hot films. A new 18-inch stainless-steel Ludwieg tube is nearing completion for use with an 9.5-inch quiet-flow Mach-6 test section. Quiet-flow operation to a length Reynolds number of 13 million is projected (AIAA Paper 98-0547). The air and vacuum systems were completed by the end of 1998, with initial tunnel operation currently planned for Spring 2001.

Publications:

Schneider, S. P., “Flight Data for Boundary-Layer Transition at Hypersonic and Supersonic Speeds,” Journal of Spacecraft and Rockets, Vol. 36, No. 1, Jan.-Feb. 1999, pp. 8-20.

Conference Proceedings, Presentations and Invited Lectures:

Schmisseur, J. D., Schneider, S. P., and Collicott, S. H., “Response of the Mach-4 Boundary Layer on an Elliptic Cone to Laser-Generated Freestream Perturbations,” AIAA paper 99-0410, presented at the 37th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 1999, 14 pages.

Faculty Summary - Aerodynamics: John P. Sullivan

JOHN P. SULLIVAN 1975 Professor

Degrees: B. S., University of Rochester, Mechanical & Aerospace Sciences (with honors), 1967 M. S., Massachusetts Institute of Technology, Aeronautical Engineering, 1969 Sc.D., Massachusetts Institute of Technology, Aeronautical Engineering, 1973

Interests: Experimental aerodynamics Laser instrumentation Luminescent sensors for temperature and pressure measurements

Research Areas: Current research interest is in the area of experimental aerodynamics with particular emphasis on comparison of experimental data with computational analysis. Current programs include:

High lift systems.
Suction/blowing airfoils. In addition to the above programs, work also continues on developing laser instrumentation (laser Doppler velocimeter, particle image velocimeter, laser sheet concentration, etc.) and pressure and temperature paint for:
Wind tunnels - low speed to hypersonic
Gas turbine engines
Flight tests

Conference Proceedings, Presentations and Invited Lectures:

Crafton, J., Lachendro, N., Guille, M., Sullivan, J. P., and Jordan, J. D., “Application of Temperature and Pressure Sensitive Paint to an Obliquely Impinging Jet,” AIAA paper 90-0387, presented at the 37th Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan. 11-14, 1999.
Scroggin, A. M., Slamovich, E. B., Crafton, J., Lachendro, N., and Sullivan, J. P., “Porous Polymer/Ceramic Composites for Luminescence-Based Temperature and Pressure Measurement,” MRS Symposium Proceedings, April 1999.
Sakaue, H., Sullivan, J. P., Asai, K., Iijima, Y., and Kunimasu, T., “Anodized Aluminum Pressure Sensitive Paint in a Cryogenic Wind Tunnel,” Proceedings of the 45th International Instrumentation Symposium, Instrument Society of America, Albuquerque, NM, May 2-6, 1999.
Guille, M., Holmes, J., and Sullivan, J. P., “Comparison of Luminescent Paint Measurement Systems,” ICIASF, Toulouse, France, 1999.
Liu, T., Guille, M., and Sullivan, J. P., “Accuracy of Pressure Sensitive Paints,” AIAA paper 99-3785.
Guille, M., Liu, T., and Sullivan, J. P., “Modeling of PSP Measurement System,” 7th Annual Pressure Sensitive Paint Workshop, Purdue University, W. Lafayette, IN, Oct. 11-13, 1999.
Liu, T., Lachendro, N., Guille, M., and Sullivan, J. P., “Lifetime Methods,” 7th Annual Pressure Sensitive Paint Workshop, Purdue University, W. Lafayette, IN, Oct. 11-13, 1999.
Scroggin, A. M., Slamovich, E. B., Lachendro, N., Sakaue, H., and Sullivan, J. P., “Rapidly Responding Pressure Sensitive Paint Based on Porous Polymer/Ceramic Films,” 7th Annual Pressure Sensitive Paint Workshop, Purdue University, W. Lafayette, IN, Oct. 11-13, 1999.
Sakaue, H., Asai, K., and Sullivan, J. P., “Porous Pressure Sensitive Paint,” 7th Annual Pressure Sensitive Paint Workshop, Purdue University, W. Lafayette, IN, Oct. 11-13, 1999.
Lachendro, N., Guille, M., Crafton, J., Scroggin, A. M., and Sullivan, J. P., “Flight Test of Pressure Sensitive Paint Laser Scanning System,” 7th Annual Pressure Sensitive Paint Workshop, Purdue University, W. Lafayette, IN, Oct. 11-13, 1999.

Faculty Summary - Aerodynamics: Marc H. Williams

MARC H. WILLIAMS 1981 Professor and Associate Head

Degrees: B. S., University of Pittsburgh, Aeronautical Engineering, Magna Cum Laude, 1969 M. A., Princeton University, Aerospace & Mechanical Sciences, 1971 Ph.D., Princeton University, Aerospace & Mechanical Sciences, 1975

Interests: Aerodynamics Computational fluid Mechanics

Research Areas: The determination of aeroelastic stability and forced response characteristics of flight vehicles requires methods for predicting the unsteady aerodynamic loads that are induced by structural deformation and/or free stream disturbances. Current research is directed at developing such methods for transonic flight and for rotating machinery. Much of this work has been done for advanced propfan applications. These engines are intended for use on medium range commercial transports, which operate at low transonic Mach numbers. In order to maintain high operating efficiency and low noise, the blades are very thin and flexible. Therefore, they are subject to substantial static and dynamic deformations which alter the aerodynamic loads on the blades. Computational methods have been developed to predict these loads, both for single and counter rotating systems. Flutter boundaries and forced vibration amplitudes have been successfully predicted for a variety of current propfan designs. The most successful schemes developed so far have been based on linearized aerodynamic models. Work is under way on including nonlinear transonic effects through three-dimensional potential formulation with moving grids.

Publications:

Gick, R. A., Williams, M. H., and Longuski, J. M., “Floquet Approximation for a Nearly Axisymmetric Rigid Body with Constant Transverse Torque,” Journal of Guidance, Control, and Dynamics, Vol. 22, No. 5, Sept.-Oct. 1999, pp. 658-663.

Conference Proceedings, Presentations and Invited Lectures:

Beck, R. A., Williams, M. H., and Longuski, J. M., “Periodic Solutions for a Spinning Asymmetric Rigid Body with Constant Principal-axis Torques,” AAS/AIAA Astrodynamics Specialist Conference, Girdwood, AK, Aug. 16-19, 1999.

Faculty Summary - Dynamics & Control: Dominick Andrisani

DOMINICK ANDRISANI 1980 Associate Professor

Degrees: B. S., Rensselaer Polytechnic Institute, Aeronautical Engineering, 1970 M. S., State University of New York at Buffalo, Electrical Engineering, 1975 Ph.D., State University of New York at Buffalo, Electrical Engineering, 1979

Interests: Estimation Control Dynamics Flight Aircraft Flying Qualities

Research Areas: Extensive experience in experimental methods in the study of vehicle dynamics and control has focused teaching and research on practical and important aerospace problems in four areas. First is the area of estimation theory, where new estimation algorithms have been developed using the partitioning approach. The second area involves the application of estimation theory to aerospace problems. Here estimation theory has been used to develop a new class of target trackers. These trackers incorporate knowledge of the aerodynamic and thrust vectors to help improve the trackers ability to estimate target acceleration. The third area involves research towards the development of design specifications for helicopter flight control systems, i.e., helicopter flying qualities. The fourth area involves analysis and detection of pilot-in-the-loop oscillations.

Faculty Summary - Dynamics & Control: Martin Corless

MARTIN CORLESS 1984 Professor

Degrees: B. E., (1st honors), University College, Dublin, Ireland, Mechanical Engineering, 1977 Ph.D., University of California, Berkeley, Mechanical Engineering, 1984

Interests: Dynamics Systems Control

Research Areas: Most of the research is concerned with obtaining tools which are useful in the analysis and control of systems containing significant uncertainty. These uncertainties are characterized deterministically, rather than stochastically. The systems treated can be linear or nonlinear and continuous-time or discrete-time. The major application of the research is in the analysis and control of aerospace and mechanical systems. In these applications, some of the research focuses on the effect of flexible elements.

Publications:

Georgiou, I. T., Bajaj, A. K., and Corless, M. J., “Invariant Manifolds and Chaotic Vibrations in a Singularly Perturbed Nonlinear Oscillator with Applications to Structural Dynamics,” International Journal of Engineering Science, Vol. 36, No. 4, 1998, pp. 431-558.
Georgiou, I. T., Corless, M. J., and Bajaj, A. K., “Dynamics of Nonlinear Structures with Multiple Equilibria: A Singular Perturbation-Invariant Manifold Approach,” ZAMP: Journal of Applied Mathematics and Physics, Vol. 50, 1999, pp. 892-924.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Sultan, C., Corless, M. J., and Skelton, R. E., “Nonlinear Robust Tracking Control of a Tensegrity Motion Simulator,” SPIE 12th International Symposium on Aerospace/Defense Sensing, Simulation and Controls, AeroSense 98, Orlando, FL, 1998.
Sultan, C., Corless, M. J., and Skelton, R. E., “Peak to Peak Control of an Adaptive Tensegrity Space Telescope,” SPIE 6th International Symposium on Smart Structures and Materials, Newport Beach, VA, 1999.
Sultan, C., Corless, M. J., and Skelton, R. E., “Reduced Prestressability Conditions for Tensegrity Structures,” AIAA/ASME/ASCE/ASC 40th Structures, Structural Dynamics and Materials Conference, St. Louis, MO, 1999.
Corless, M. J., “Polyhedral Lyapunov Functions for Robust Stability,” IFAC Workshop on Control of Uncertain Systems, Hong Kong, 1999.
Corless, M. J., “Lyapunov Based System Analysis and Control Design,” RES-60th Mini-Symposium, San Diego, CA, 1999.

Faculty Summary - Dynamics & Control: Arthur E. Frazho

ARTHUR E. FRAZHO Professor 1980

Degrees: B.S.E., The University of Michigan, Ann Arbor, Computer Engineering, 1973 M.S.E., The University of Michigan, Ann Arbor, Computer Information and Control Engineering, 1974 Ph.D., The University of Michigan, Ann Arbor, Computer Information and Control Engineering, 1977

Interests: Control systems

Research Areas: This research develops and applies operator theory to problems in deterministic and stochastic control systems. These techniques are used to design models for both linear and nonlinear control systems. We also obtain fast recursive algorithms for computing reduced order models. This also yields a theory of H∞ controller reduction and pole placement with applications to large space structure control. Finally, these techniques are used to solve problems in signal processing and inverse scattering theory.

Faculty Summary - Dynamics & Control: Kathleen C. Howell

KATHLEEN C. HOWELL 1982 Professor

Degrees: B. S., Iowa State University, Aerospace Engineering, 1973 M. S., Stanford University, Aeronautical & Astronautical Engineering, 1977 Ph.D., Stanford University, Aeronautical & Astronautical Sciences, 1983

Interests: Orbit mechanics Spacecraft dynamics, control Trajectory optimization

Research Areas: In the area of astrodynamics, the complex missions envisioned in the next few decades will demand innovative spacecraft trajectory concepts and efficient design tools for analysis and implementation. In support of such plans, current research efforts focus on spacecraft navigation and maneuver requirements, and mission planning, both in the neighborhood of the Earth and in interplanetary space.

Much recent research activity has involved libration point orbits in the three- and four-body problems. The n-body problem in orbital mechanics generally considers trajectory solutions when (n-1) gravity fields are significant. Spacecraft in the vicinity of libration points thus operate in an environment in which gravity forces due to two or three (or more) celestial bodies may result in trajectories that appear as three-dimensional, quasi-periodic Lissajous paths. Such three-dimensional trajectories are of considerable interest in connection with any future lunar operations. In the near term, missions involving libration point satellites are included in a number of programs that the U. S. is planning with international partners.

The subject of optimal transfer trajectories is of considerable importance and rapidly growing in complexity as well. New types of problems now facing mission designers render standard optimization strategies inadequate, particularly for application in the n-body problem. Nominal transfer trajectory determination and optimization is the focus of an expanding investigation.

A related problem of interest involves Earth orbiting vehicles that repeatedly pass close to the Moon. Such trajectories use lunar gravity to effect trajectory changes. Not only can such a swingby aid in minimizing mission fuel requirements, it also creates trajectory options that may otherwise be impossible.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Howell, K. C., and Campbell, E. T., “Families of Periodic Orbits that Bifurcate from Halo Families in the Circular Restricted Three-Body Problem,” AAS/AIAA Spaceflight Mechanics Conference, Breckenridge, CO, Feb. 1999.
Barden, B. T., and Howell, K. C., “Dynamical Issues Associated with Relative Configurations of Multiple Spacecraft Near the Sun-Earth/Moon L1 Point,” AAS/AIAA Astrodynamics Specialist Conference, Girdwood, AK, Aug. 1999.
Wilson, R. S., Howell, K. C., and Lo, M. W., “Optimization of Insertion Cost for Transfer Trajectories to Libration Point Orbits,” AAS/AIAA Astrodynamics Specialists Conference, Girdwood, AK, Aug. 1999.
Howell, K. C., and Barden, B. T., “Trajectory Design and Stationkeeping for Multiple Spacecraft in a Fixed Configuration near the Sun-Earth L1 Point,” 50th International Astronautical Federation Congress, Amsterdam, The Netherlands, Oct. 1999.
Howell, K. C., “Application of Dynamical Systems Theory to Spacecraft Trajectory Design Including GENESIS,” Fifth SIAM Conference on Applications of Dynamical Systems, Snowbird, UT, May 1999.
Howell, K. C., “Spacecraft Mission Design and an Application of Dynamical Systems,” Univ. of Maryland, Joint Colloquium, Depts. of Mathematics and Physics, Sept. 1999.
Howell, K. C., and Barden, B. T., “Third Stage Analysis for Genesis Mission,” Purdue IOM, AAE-9940-008, prepared for the Jet Propulsion Lab, CA, July 1999.
Howell, K. C., and Barden, B. T., “Orbital Debris Analysis for the Genesis Mission,” Purdue IOM AAE-9940-011, prepared for the Jet Propulsion Lab, CA, Nov. 1999.
Howell, K. C., “Final Report: Analysis of Transfer Trajectories from Earth – Sun-Earth L2 Lissajous Orbits,” prepared for the Jet Propulsion Lab, CA, Dec. 1999.

Faculty Summary - Dynamics & Control: James M. Longuski

JAMES M. LONGUSKI 1988 Professor

Degrees: B.S.E., The University of Michigan, Aerospace Engineering - Cum laude, 1973 M.S.E., The University of Michigan, Aerospace Engineering, 1975 Ph.D., The University of Michigan, Aerospace Engineering, 1979

Interests: Spacecraft Dynamics Orbit Mechanics Control Orbit decay and reentry

Awards and Major Appointments: NOVA (Notable Organizational Value-Added) Award from Jet Propulsion Laboratory

Research Areas: Current research efforts include 1) analytic theory and control of spinning-up and thrusting vehicles, 2) mission design and trajectory design for interplanetary flight, 3) orbit decay and reentry problems, and 4) tethers in space.

Publications:

Longuski, J. M., and Tragesser, S. G., “Characterization of the Optimal Mass Problem for Aerobraking Tethers,” Acta Astronautica, Vol. 44, No. 5, 1999, pp. 227-241.
Gick, R. A., Williams, M. H., and Longuski, J. M., “Floquet Approximation for a Nearly Axisymmetric Rigid Body with Constant Transverse Torque,” Journal of Guidance, Control, and Dynamics, Vol. 22, No. 5, Sept.-Oct. 1999, pp. 658-663.

Patents (provisional):

Longuski, J. M., “Velocity Precision - Pointing Enhancement System (VPES),” Purdue Ref. No. P-99061.P1.US, filed August 9, 1999.

Conference Proceedings, Presentations, Invited Lectures, and Reports:

Petropoulos, A. E., Longuski, J. M., and Vinh, N. X., “Shape-Based Analytic Representations of Low-Thrust Trajectories for Gravity-Assist Applications,” AAS/AIAA Astrodynamics Conference, paper no. AAS 99-337, Girdwood, AK, Aug. 16-19, 1999.
Bonfiglio, E. P., Longuski, J. M., Vinh, N. X., “Automated Design of Aerogravity-Assist Trajectories,” AAS/AIAA Astrodynamics Conference, paper no. AAS 99-361, Girdwood, AK, Aug. 16-19, 1999.
Javorsek, II, D., and Longuski, J. M., “Velocity Pointing Errors Associated with Spinning Thrusting Spacecraft,” AAS/AIAA Astrodynamics Conference, paper no. AAS 99-452, Girdwood, AK, Aug. 16-19, 1999.
Gick, R. A., Williams, M. H., and Longuski, J. M., “Periodic Solutions for a Spinning Asymmetric Rigid Body with Constant Principal Axis Torque,” AAS/AIAA Astrodynamics Conference, paper no. AAS 99-453, Girdwood, AK, Aug. 16-19, 1999.
Longuski, J. M., guest lecturer at 1999 Elderhostel Program, Purdue University, June, 22, 1999.
Petropoulos, A. E., Bonfiglio, E. P., and Longuski, J. M., “Low-Thrust and Gravity-Assist Trajectory Design for Planetary Missions,” Progress Report Nos. 4-9 and Final Report, Jet Propulsion Laboratory, JPL Contract No. 961211, 1999.

Faculty Summary - Dynamics & Control: Mario A. Rotea

MARIO A. ROTEA 1990 Associate Professor

Degrees: Electronic Engineer Degree (6-year curricula), Universidad Nacional de Rosario, Argentina, 1983 M.S.E.E., University of Minnesota, Electrical Engineering, 1988 Ph.D., University of Minnesota, Control Science & Dynamical Systems, 1990

Interests: Design and implementation of control systems with multiple sensors and actuators. Optimization. System identification.

Research Areas:

Design and Implementation of Active Control Systems (sponsored in part, by NSF, United Technologies Corporation, and the Boeing Company)
Fast Algorithms for Prediction of Worst-Case Frequency Response (sponsored in part by NSF and United Technologies Corporation)
Analysis and Design of Extremum Seeking Algorithms (sponsored in part by NSF)
Parameter Estimation in Air Vehicles (sponsored in part by NPS and NASA)

Publications:

Viassolo, D., and Rotea, M. A., “Optimal Scaling of Digital Controllers,” IEEE Transactions on Circuits and Systems, Series I: Fundamental Theory and Applications, Vol. 46, No. 4, April 1999, pp. 500-505.

Conference Proceedings, Presentations, Invited Lectures, and Reports:

D’Amato, F. J., Megretski, A., Jonson, U. T., and Rotea, M. A., “Integral Quadratic Constraints for Monotonic and Slope Restricted Diagonal Operators,” 1999 American Control Conference, San Diego, CA, June 1999, pp. 2375-2379.
Rotea, M. A., “Design of Static Cascade Compensators using Generalized Singular Values,” 1999 IEEE CCA and CACSD, Kona, Hawaii, Aug. 1999, pp. CACSD 340-346.
Rotea, M. A., “Tools for IBR Analysis and Blending,” presented at Pratt & Whitney, East Hartford, CT, March 1999.

Faculty Summary - Propulsion: Stephen D. Heister

STEPHEN D. HEISTER 1990 Professor

Degrees: B.S.E., The University of Michigan, Aerospace Engineering, 1981 M.S.E., The University of Michigan, Aerospace Engineering, 1983 Ph.D., University of California at Los Angeles, Aerospace Engineering, 1988

Interests: Rocket propulsion Liquid propellant injection systems Two-phase and capillary flows

Faculty Summary - Propulsion: John J. Rusek

JOHN J. RUSEK 1998 Assistant Professor

Degrees: B. S., Case Western Reserve University, Chemical Engineering, 1976 M. S., Case Western Reserve University, Chemical Engineering, 1981 Ph.D., Case Western Reserve University, Chemical Engineering, 1983

Interests: Energy Conversion Chemical and Physical Propulsion Power Generation

Awards and Major Appointments: • 1998 William B. McLean Prize, United States Navy Air Technology Medal • 1998 USN Rear Admiral Commendation for Young Astronauts Program • 2000 Distinguished Alumnus – Loyola Academy • Who’s Who in the World • Who’s Who in America

Research Areas: Current research is directed towards obtaining a fundamental understanding of hydrogen peroxide decomposition via heterogeneous and homogeneous catalysis for use in rocket propulsion and power generation. Major focus concerns the synthesis, characterization, and testing of these novel catalysts in rocket propulsion, turbine, and fuel cell applications; areas of interest include the experimental and analytical understanding of catalytic reaction kinetics and thermodynamics. Another major research direction is the fundamental understanding of aerospace materials, specifically in the safe containment of exotic propellant ingredients. International collaboration with government, academic, and industrial research centers is playing an important part in this research.

Conference Proceedings, Presentations, and Invited Lectures:

Rusek, J. J., “Strategic Comments,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, p. 1.
Long, M. R., Beutien, T., Birkhauser, E., Remson, A., and Rusek, J. J., “The Characterization of Propulsive Decomposition of Hydrogen Peroxide,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 135-154.
Funk, J., and Rusek, J. J., “Assessment of United States Navy Block 0 NHMF/RGHP Propellants,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 171-182.
Austin, B. J., Frolik, S., Porras, G., Etheridge, L. J., and Rusek, J. J., “Characterization of Non-toxic, Hypergolic Bi-propellants,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 189-198.
Porras, G., Wulf, S., Funk, J., and Rusek, J. J., “Non-toxic Hypergolic Bi-propellant Engine Design,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 299-304.
Rusek, J. J., and Heister, S. D., “Propulsion and Power Testing and Analysis Capabilities at Purdue University,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 335-343.
Kim, Y-J., VanMeter, M. G., Rusek, J. J., “Hydrogen Peroxide Powered Turbine Research,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, Nov. 7-10, 1999, pp. 351-357.
Lim, K. H., Long, M., Schultz, J., and Rusek, J. J., “Aluminum-Hydrogen Peroxide Fuel Cell,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, pp. 359-362.
Stein, W. B., and Rusek, J. J., “Serrano Effect Research,” Proceedings of the 2nd International Hydrogen Peroxide Propulsion Conference, Purdue University, W. Lafayette, IN, pp. 363-368.

Faculty Summary - Structures & Materials: William A. Crossley

WILLIAM A. CROSSLEY 1995 Assistant Professor

Degrees: B.S.E. University of Michigan, Aerospace Engineering, 1990 M. S. Arizona State University, Aerospace Engineering, 1992 Ph.D. Arizona State University, Aerospace Engineering, 1995

Interests: Optimization Rotorcraft and aircraft design Structure design

Research Areas: Professor Crossley’s major research interests are in the area of design methodologies and optimization, with emphasis on techniques like the GA that will allow optimization-like methods to be applied in the conceptual design phase.

Faculty Summary - Structures & Materials: James F. Doyle

JAMES F. DOYLE 1977 Professor

Degrees: Dipl. Eng., Dublin Institute of Technology, Ireland, 1972 M.Sc., University of Saskatchewan, Canada, 1974 Ph.D., University of Illinois, 1977

Interests: Structural dynamics Experimental Mechanics Inverse Problems Wave propagation

Research Areas:

Wave Motion in Structures: Because of their size and low stiffness, large space structures are susceptible to wave motions due to transients. New, spectrally formulated, elements are being developed that are suitable for dynamic problems.
Impact and Damage of Structures: Investigations involve wave interactions with delamination flaws in composite materials. Aspects include force identification, remote sensing, and local/global analysis.
Whole Field Image Characterization: Ultra-high speed photography coupled with photoelasticity and moiré to characterize wave information.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Doyle, J. F., “Determining Dynamic Crack Propagation Properties by Remote Measurements,” SEM Proceedings, Nashville, TN, June 1999, pp. 772-775.

Faculty Summary - Structures & Materials: Thomas N. Farris

THOMAS N. FARRIS 1986 Professor and Head

Degrees: B. S., Rice University, Cum Laude, Mechanical Engineering, 1982 M. S., Northwestern University, Theoretical and Applied Mechanics, 1984 Ph.D., Northwestern University, Theoretical and Applied Mechanics, 1986

Interests: Tribology Manufacturing processes Fatigue and fracture

Awards and Major Appointments: NRC/NMAB Committee on SBIR research to support aging aircraft

Research Areas: Experimental and analytical characterization of fretting fatigue; manufacturing processes including grinding, turning, and super finishing; modeling of heat treatment processes.

Publications:

Szolwinski, M. P., Harish, G., Farris, T. N., and Sakagami, T., “In-Situ Measurement of Near-Surface Fretting Contact Temperatures in an Aluminum Alloy,” ASME Journal of Tribology, Vol. 121, No. 2, 1999, pp. 11-19.
Szolwinski, M. P., Matlik, J. F., and Farris, T. N., “Effects of HCF Loading on Fretting Fatigue Crack Nucleation,” International Journal of Fatigue, No. 21, 1999, pp. 671-677.
McVeigh, P. A., Harish, G., Farris, T. N., and Szolwinski, M. P., “Modeling Contact Conditions in Nominally-Flat Contacts for Application to Fretting Fatigue of Turbine Engine Components,” International Journal of Fatigue, No. 21, 1999, pp. S157-165.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Szolwinski, M. P., and Farris, T. N., “Linking Riveting Process Parameters to the Fatigue Performance of Riveted Aircraft Structures,” Proceedings 40th AIAA/ASME/ASCE/ASC Structures, Structural Dynamics, and Materials Conference, in press, St. Louis, MO, April 1999.
Harish, G., and Farris, T. N., “An Integrated Approach for Prediction of Fretting Crack Nucleation in Riveted Lap Joints,” Proceedings 40th AIAA/ASME/ASCE/ASC Structures, Structural Dynamics, and Materials Conference, in press, St. Louis, MO, April 1999.
McVeigh, P. A., and Farris, T. N., “Analysis of Surface Stresses and Stress Intensity Factors Present During Fretting Fatigue,” Proceedings 40th AIAA/ASME/ASCE/ASC Structures, Structural Dynamics, and Materials Conference, in press, St. Louis, MO, April 1999.
Szolwinski, M. P., Tieche, C., Harish, G., Farris, T. N., Sakagami, T., and Heinstein, M., “Mechanics of Finite Width Fretting Contacts,” Proceedings SEM Conference on Theoretical Experimental and Computational Mechanics, Cincinnati, OH, June 1999, pp. 314-317.
Sakagami, T., Harish, G., Farris, T. N., and Szolwinski, M. P., “Observing and Modeling of Widespread Fatigue Damage in Riveted Aircraft Structures,” Proceedings SEM Conference on Theoretical, Experimental and Computational Mechanics, Cincinnati, OH, June 1999, pp. 686-689.
Harish, G., McVeigh, P. A., Tieche, C., and Farris, T. N., “Fatigue Analysis of Fretting in Aircraft Structures,” ASME 1999 Mechanics and Materials Conference, Virginia Polytechnic Institute and State University, June 27-30, 1999, (abstract only).
Farris, T. N., Harish, G., Tieche, C., Sakagami, T., and Szolwinski, M. P., “Experimental Tools for Characterizing Fretting Contacts,” Proceedings International Conference on Advanced Technology in Experimental Mechanics, (keynote lecture) Ube, Japan, July 1999, pp. 256-263.
Farris, T. N., Harish, G., Szolwinski, M. P., and Sakagami, T., “Observing and Modeling Fretting Fatigue in Lap Joints,” Proceedings JSME Annual Meeting, (invited lecture) paper #1026, Tokyo, July 1999, pp. 265-268.
Ju, Y., Farris, T. N., and Chandrasekar, S., “Effects of Grinding Conditions on Heat Partition and Temperatures in Grinding,” The Advancing Frontier of Engineering Tribology: Proceedings 1999 STLE/ASME H. S. Cheng Tribology Surveillance, Orlando, FL, Oct. 1999, pp. 90-95.
Akcan, S., Shah, S., Moylan, S. P., Chhabra, P. N., Chandrasekar, S., and Farris, T. N., “Characteristics of White Layers Formed in Steels by Machining,” ASME MED Sym. Machining and Grinding of Hard Materials, Vol. 10, pp. 789-795, Nashville, TN, Nov. 1999.
Chang, S. H., Farris, T. N., and Chandrasekar, S., “Experimental Characterization of Superfinishes,” ASME MED, Vol. 10, Manufacturing Science and Engineering, pp. 789-795, Nashville, TN, Nov. 1999.
Harish, G., Farris, T. N., Wang, H., and Grandt, A. F., “Nucleation and Growth of Cracks in Lapjoints,” Proceedings USAF Aircraft Structural Integrity Program, CD-ROM, San Antonio, TX, Nov.-Dec. 1999.
Farris, T. N., “Fretting Fatigue of Aerospace Structures,” United Technologies Research Center, April 1999.
Farris, T. N., “Fretting Fatigue of Aerospace Structures,” Osaka University, Mechanical Engineering Department, Japan, July 1999.

Faculty Summary - Structures & Materials: Alten F. Grandt, Jr.

ALTEN F. GRANDT, JR. 1979 Professor

Degrees: B. S., University of Illinois at Urbana-Champaign, General Engineering, 1968 M. S., University of Illinois at Urbana-Champaign, Theoretical and Applied Mechanics, 1969 Ph.D., University of Illinois at Urbana-Champaign, Theoretical and Applied Mechanics, 1971

Interests: Damage-tolerant structures and materials Fatigue and fracture Aging aircraft Nondestructive inspection

Research Areas: Basic research is directed at developing methodology to analyze and design damage tolerant aerospace structures and materials or to evaluate the remaining safe operating life of “aging” aircraft.

Publications:

Grandt, Jr., A. F., Golden, P. J., and Bray, G. H., “A Comparison of Fatigue Crack Formation at Hole in 2024-T3 and 2524-T3 Aluminum Alloy Specimens,” International Journal of Fatigue, Vol. 21, Sup. 1999, pp. S211-S219.
Grandt, Jr., A. F., and Wang, H. L., “Analysis of Widespread Fatigue Damage in Lap Joints,” SAE 1999 Transactions, Journal of Aerospace, Section 1, Vol. 108, 1999, pp. 262-269.
Scheuring, J. N., and Grandt, Jr., A. F., “A Fracture Mechanics Based Approach to Quantifying Corrosion Damage,” SAE 1999 Transactions, Journal of Aerospace, Section 1,. Vol. 108, 1999, pp. 270-281.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Scheuring, J. N., and Grandt, Jr., A. F., “A Fracture Mechanics Based Approach to Quantifying Corrosion Damage,” SAE paper series #1999-01-1859, General, Corporate and Regional Aviation Meeting and Exposition, Wichita, KS, April 20-22, 1999.
Grandt, Jr., A. F., and Wang, H. L., “Analysis of Widespread Fatigue Damage in Lap Joints,” SAE technical paper series #1999-01-1586, General, Corporate and Regional Aviation Meeting and Exposition, Wichita, KS, April 20-22, 1999.
Scheuring, J. N., and Grandt, Jr., A. F., “Quantification of Corrosion Damage Utilizing a Fracture Mechanics Based Methodology,” Proceedings of the 3rd Joint FAA/DoD/NASA Conference on Aging Aircraft, Albuquerque, NM, Sept. 20-23, 1999.
Grandt, Jr., A. F., “Analysis of Widespread Fatigue Damage,” SAE Conference, Purdue University, (presentation only) W. Lafayette, IN, Oct. 20, 1999.
Harish, G., Farris, T. N., Wang, H. L., and Grandt, Jr., A. F., “Nucleation and Growth of Cracks in Lap Joints,” Proceedings of the 1999 USAF Aircraft Structural Integrity Program Conference, San Antonio, TX, Nov. 30- Dec. 2, 1999, 23 pages.
Grandt, Jr., A. F., “Fatigue for Engineers,” four-hour teaching module prepared for the ASME Career Development Series, course #CDS 11, June 1999. Instructor’s guide (134 pages) and participant’s workbook (45 pages) are available at http://www.asme.org/pro_dev/career/.

Faculty Summary - Structures & Materials: C. T. Sun

C. T. SUN 1968 Neil A. Armstrong Distinguished Professor of Aeronautical & Astronautical Engineering

Degrees: B. S., National Taiwan University, Taiwan, Civil Engineering, 1962 M. S., Northwestern University, Theoretical & Applied Mechanics, 1965 Ph.D., Northwestern University, 1967

Interests: Composites Fracture and Fatigue Structural Dynamics Smart Materials and Structures

Research Areas: Composite Materials and Structures, Fracture Mechanics, and Smart Materials and Structures.

Publications:

Zhang, X. D., and Sun, C. T., “Analysis of a Sandwich Plate Containing a Piezoelectric Core,” Smart Materials and Structures, Vol. 8, 1999, pp. 31-40.
Pandey, P. K., and Sun, C. T., “Mechanisms of Wrinkle Formation During the Processing of Composite Laminates,” Composites Science and Technology, Vol. 59, 1999, pp. 405-418.
Klug, J., Maley, S., and Sun, C. T., “Characterization of Fatigue Behavior of Bonded Composite Repairs,” Journal of Aircraft, Vol. 36, No. 6, Nov.-Dec. 1999, pp. 1016-1012.
Jiang, L. Z., and Sun, C. T., “Crack Growth Behavior in Piezoceramics under Cyclic Loads, FERROELECTRICS, Vol. 233 (3-4), 1999, pp. 211-223.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Jiang, L. Z., and Sun, C. T., “Analysis of Indentation Cracking in Piezoceramics,” PACAM VI, Rio De Janeiro, Brazil, Jan. 4-8, 1999, pp. 507-600.
Zhu, C., and Sun, C. T., “An Overstress Viscoplastic Model for Loading and Unloading in Polymeric Composites,” ICM8 Proceedings, Vol. III, No. 7, 1999, pp. 1032-1036.
Ze-Ping, and Sun, C. T., “Micro-Inertia Effect in Heterogeneous Materials Subjected to Dynamic Loading,” 15th U. S. Army Symposium on Solid Mechanics, Myrtle Beach, S. C., April 12-14, 1999.
Ninan, L., and Sun, C. T., “Testing and Modeling High Strain Rate Dependent Behavior in Polymeric Composites,” 40th AIAA/ASME/ASCE/ASC Structures, Structural Dynamics, and Materials Conference, St. Louis, MO, Apr. 12-15, 1999.
Yateau, J. D., Recht, G. W., Sun, C. T., and Dickinson, D. L., “Effects of Panel Thickness and Impact Obliquity on Ballistic Limit Velocities for Graphite-Epoxy Composite Panels,” ASME 1999 Mechanics and Materials Conference, Blacksburg, VA, June 27-30, 1999.
Sun, C. T., “Sensitivity of Laminate Strength Prediction to Laminate Shear Strength,” Tsai Symposium on Composites for the Next Millennium, Tours, France, July 2-3, 1999.
Sun, C. T., and Tsai, J. L., “Dynamic Interlaminar Fracture Toughness in Polymeric Composites,” Proceedings of ICCM12, Paris, France, July 5-9, 1999.
Sun, C. T., “Unconventional Testing and Modeling Methods for Composite Materials and Laminates,” JSASS/JSME Structures Conference, Tohoku University, Sendai, Japan, July 14-16, 1999, pp. S.9-S.16.
Kim, W. D., and Sun, C. T., “Modeling of Relaxation Behavior of a Polymeric Composite During Loading and Unloading,” 4th International Conference on Constitutive Laws for Engineering Materials, Troy, NY, July 27-30, 1999, pp. 421-424.
Sun, C. T., “Fracture and Fatigue of Piezoceramics Under Electrical and Mechanical Loading,” 4th ARO Workshop on Smart Structures, University Park, PA, Aug. 16-18, 1999.
Sun, C. T., “Modeling Fracture of Bimaterial Interfacial Cracks with Frictional Contact,” Interfacial Phenomena in Composite Materials ’99, Berlin, Germany, Sept. 1999, pp. 8a2.
Hu, H. W., and Sun, C. T., “Characterizing Physical Aging in Polymeric Composites,” American Society for Composites 14th Technical Conference, Dayton, OH, Sept. 27-29, 1999, pp. 209-218.
Cho, J., and Sun, C. T., “Lowering Thermal Residual Stresses in Bonded Composite Patch Repairs,” American Society for Composites 14th Technical Conference, Dayton, OH, Sept. 27-29, 1999, pp. 884-893.
Maley, S., and Sun, C. T., “Enhanced Damping Properties of Sandwich Structures, ASME 1999 International Mechanical Engineering Conference and Exhibition, Nashville, TN, Nov. 14-19, 1999.
Adams, D. S., and Sun, C. T., “Testing Brittle Materials under the Confinement of High Performance Fibers,” ASME 1999 IMECE, Nashville, TN, Nov. 14-19, 1999.
Chang, I., and Sun, C. T., “Analysis of Domain Switching Zone Near a Crack Tip in Piezoceramics,” ASME 1999 IMECE, Nashville, TN, Nov. 14-19, 1999.
Yang, Z., and Sun, C. T., “Influence of Fiber Orientation on Interlaminar Fracture Toughness of Composites,” ASME 1999 IMECE, Nashville, TN, Nov. 14-19, 1999.
Sun, C. T., “Effects of Core Reinforcements on the Structural Behavior of Sandwich Plates,” ASME 1999 IMECE, Nashville, TN, Nov. 14-19, 1999.
Han, C., and Sun, C. T., “Attenuation of Stress Wave Propagation in Periodically Layered Elastic Media,” Mathematics and Computers in Mechanical Engineering, Marathan, FL, July 25-29, 1999.
Agrawal, P., and Sun, C. T., “Micromechanical Properties of Metal-Ceramic Composites,” ASC 14th Technical Conference, Dayton, OH, Sept. 27-29, 1999.
Zeng, Q., and Sun, C. T., “Design of a New Bonded Composite Lap Joint,” ASC 14th Technical Conference, Dayton, OH, Sept. 27-29, 1999.
Sun, C. T., “Unconventional Testing and Modeling Methods for Composite Materials and Laminates,” Keynote Speaker, 41st JSASS/JSME Structures Conference, Sendai, Japan, July 14-16, 1999.
Sun, C. T., “Impact of Composite Structures,” invited lecturer, Kyshu University, Japan, July 19, 1999.
Sun, C. T., “Some Unusual Behavior of Composite Materials and Laminates,” Univ. of Tokyo, Japan, July 23, 1999.

Faculty Summary - Structures & Materials: Terrence A. Weisshaar

TERRENCE A. WEISSHAAR 1980 Professor

Degrees: B. S., (highest distinction), Northwestern University, Mechanical Engineering, 1965 S. M., Massachusetts Institute of Technology, Aeronautics & Astronautics, 1966 Ph.D., Stanford University, Aeronautics & Astronautics, 1971

Interests: Aircraft structural mechanics Aeroelasticity Integrated Design

Research Areas: Primary research areas include optimization of structural concepts for smart aeroelastic structures and efficient multidisciplinary design: • Aeroelastic tailoring and active flexible wings. • Design methodology.

Conference Proceedings, Presentations, Invited Lectures and Reports:

Weisshaar, T. A., and Dobbins, A., “Aeroelastic Tailoring for Active Flexible Wing Drag Reduction,” AIAA paper 99-1327, 40th AIAA, SDM, St. Louis, MO, April 1999.
Weisshaar, T. A., “Air Vehicle Design – New Horizons,” NATO Applied Vehicle Technology Symposium, Design Issue, Ottawa, Canada, Oct. 1999.
Weisshaar, T. A., “Design of Military UAV’s,” invited presentation U. S. Air Force Academy, Jan. 1999.
Weisshaar, T. A., “Research and Development to Support Future Military UAV’s – A Multidisciplinary View,” invited presentation U. S. Air Force Research Laboratory, Wright-Patterson AFB, OH, July 1999.
Weisshaar, T. A., “Structural Optimization for Design Innovation,” invited presentation Wright-Patterson AFB, OH, Aug. 1999.
Weisshaar, T. A., and Taylor, R. M., “Structural Information Technologies – Design Process Improvement,” Raytheon Aircraft, Wichita, KS, Dec. 1999.
Weisshaar, T. A., “Air Vehicle Design – New Horizons,” invited presentation Wright State University Seminar, Dayton, OH, Oct. 1999.

Research and Other Scholarly Activities

RESEARCH AND OTHER SCHOLARLY ACTIVITIES

Research is one of the cornerstones of our School. The work being done in AAE is among the best in the world. As this important work is being recognized and acclaimed, the School is being generously supported with research funding. $3.38 million in research were expended during the academic year. This support comes from a balance of government and industrial sponsors.

The School hosted three research conferences last year. The 7th annual Pressure Sensitive Paint Conference came to Purdue University, hosted by Professor John Sullivan. The keynote speaker for the three day program was Larry Lydick, (M.S. AAE), of Lockheed Martin. The Center of Excellence in Materials Processing and Tribology presented the 3rd annual Manufacturing Processes and Tribology Workshop. Professors Steve Heister and John Rusek were the hosts for the 2nd International Hydrogen Peroxide Propulsion Conference.

Graduate Theses - July 1999 to June 2000

MASTER’S THESES

Bonfiglio, Eugene P. (J. M. Longuski): “Automated Design of Gravity-Assist and Aerogravity-Assist Trajectories” (M. S., August 1999)
Bowman, Jason C. (T. A. Weisshaar): “The Effects of Low-Observable Requirements on Tanker/Transport Designs” (M. S., August 1999)
Chang, I-Ling (C. T. Sun): “Domain Switching Effect on Fracture and Fatigue Behavior of Piezoelectric Materials” (M. S., August 1999)
Funk, John (S. D. Heister): “Analysis of the Ignition Delay of Non-Toxic Hypergolic Miscible Fuels” (M. S., August 1999)
Maihle, Laurie M. (S. D. Heister): “Design of a High Thrust/Low Thrust Orbital Transfer Vehicle Considering Van Allen Radiation Belts” (M. S., August 1999)
Yoon, Suk Goo (S. D. Heister): “Simulation of the Nonlinear Dynamics of Charged Liquids Using Boundary Element Methods” (M. S., August 1999)
Adams, Jr., Robert C. (J. F. Doyle): “Force Identification on General Structures” (M. S., December 1999)
Arrieta, Hernan Victor (H. D. Espinosa): “Dynamic Testing of Advanced Materials at High and Low Temperatures” (M. S., December 1999)
Bodony, Daniel J. (G. A. Blaisdell): “Turbulence Model Computations of an Axial Vortex” (M. S., December 1999)
Chandra, Budi W. (S. H. Collicott): “Spectra of Unsteadiness and Bubble Propagation Time Inside Cavitating Slot Orifice” (M. S., December 1999)
Li, Chunsu (C. T. Sun): “Crack Problem of Infinitely Long Strip” (M. S., December 1999)
Sakaue, Hirotaka (J. P. Sullivan): “Porous Pressure Sensitive Paints for Aerodynamic Applications” (M. S., December 1999)
Tieche, Christopher (T. N. Farris): “Three-Dimensional Finite Element Anlsysis of Finite Width Contact” (M. S., December 1999)
Williams, Edwin A. (W. A. Crossley): “Satellite Constellation Design Methods” (M. S., December 1999)
Cho, Jeongmin (C. T. Sun): “Modeling and Lowering Thermal Residual Stresses in Bonded Composite Repairs of Metallic Aircraft Structure” (M. S., May 2000)
Duke, David K. (T. A. Weisshaar): “Induced Drag Reduction using Aeroelastic Tailoring and Adaptive Control Surfaces” (M. S., May 2000)
Guille, Marianne (J. P. Sullivan): “Luminescent Paints Measurement Systems for Aerodynamics Applications” (M. S., May 2000)
Hahn, Darren J. (A. F. Grandt, Jr.): “Development of Mechanically Fastened Joint Specimens to Rank Aluminum Alloy Fatigue Performance” (M. S., May 2000)
Lachendro, Nathan (J. P. Sullivan): “Flight Testing of Pressure Sensitive Paint Using a Phase Based Laser Scanning System” (M. S., May 2000)
Lindqvist, Jens R. (S. H. Collicott): “Aerodynamic Losses in a Strut and Duct Flow with Lift” (M. S., May 2000)

DOCTORAL THESES

Bunnell, Robert A. (S. D. Heister): “Unsteady, Viscous, Cavitating, Simulation of Injector Flows” (Ph.D., August 1999)
Campbell, Eric. T. (K. C. Howell): “Bifurcations from Families of Periodic Solutions in the Circular Restricted Problem with Application to Trajectory Design” (Ph.D., August 1999)
McVeigh, Pamela (T. N. Farris): “Analysis of Fretting Fatigue in Aircraft Structures: Stresses, Stress Intensity Factors, and Life Predictions” (Ph.D., August 1999)
Campbell, Bryan T. (J. P. Sullivan): “Aerodynamic Losses and Surface Heat Transfer in a Strut/Endwall Intersection Flow” (Ph.D., December 1999)
Beaumont, Matthew (C. T. Sun): “Mechanical Characterization of Indalloy 227 Lead-Free Solder” (Ph.D., December 1999)
Gick, Rebecca Anne (J. M. Longuski): “Analytic Theory of Spacecraft Maneuvers” (Ph.D., December 1999)
Li, Haiyun (S. H. Collicott): “An Experimental Investigation of High Pressure Cavitating Atomizers” (Ph.D., December 1999)
Ryu, Shiyang (D. A. Andrisani, III): “Flying Qualities and Controller Design for Nonlinear Aircraft” (Ph.D., December 1999)
Viassolo, Daniel (M. A. Rotea): “Design and Implementation of Periodic Digital Controllers” (Ph.D., May 2000)

Colloquium Series - 1999-2000

Colloquium Series – Fall 1999

September 23, 1999, 4:00 p.m., GRIS 170: Ron Humble (U. S. Air Force Academy), “Space-Systems Engineering: A Hands-on Approach”
September 30, 1999, 4:00 p.m., Fowler Hall: Mike Sears (The Boeing Company), “Aerospace in the New Millennium” (The William E. Boeing Distinguished Lecture Series)
October 5, 1999, 4:00 p.m., GRIS 170: Dan Scheeres (University of Michigan), “Measuring the Attraction of Eros”
October 28, 1999, 4:00 p.m., GRIS 170: Richard M. Murray (United Technologies Research Center Systems), “Nonlinear Dynamics and Control of Fluid Systems with Applications to Turbomachinery”
November 5, 1999, 4:00 p.m., GRIS 276: Kyung-Suk Kim (Brown University), “Scale Bridging Between Nano and Micromechanics of Solid Surfaces” (Midwest Mechanics Seminar)
November 12, 1999, 4:00 p.m., GRIS 276: C. R. Callandine (Cambridge University), “Buckling of Thin Cylindrical Shells: An Attempt to Resolve a Paradox” (Midwest Mechanics Seminar)
November 18, 1999, 4:00 p.m., GRIS 170: Thomas J. Lang (The Aerospace Corporation), “Satellite Constellations for Continuous Coverage”
December 3, 1999, 4:00 p.m., GRIS 274: Greg Carman (UCLA), “Magnetostrictive Composite Material Systems for Structural Applications”
December 7, 1999, 4:00 p.m., GRIS 170: John Hanson (Marshall Space Flight Ctr.), “Optimization of Many Burn Orbital Transfers”

Colloquium Series - Spring 2000

February 17, 2000, 4:00 p.m., GRIS 170: Mr. Charles Annis, Jr. (Pratt & Whitney), “Probabilistics Isn’t What You Probably Think”
March 2, 2000, 4:00 p.m., GRIS 170: Prof. Michael Smith (History Department, Purdue Univ.), “Why the Soviets Lost the Race to the Moon”
March 23, 2000, 4:00 p.m., GRIS 170: Prof. P. K. Imbrie (Purdue Freshman Engrg.), “On Oxidation of Various 1-D and 2-D Geometries of Titanium and Ti-Based MMC’s”
March 30, 2000, 4:00 p.m., GRIS 170: Dr. Mark Campbell (University of Washington), “Multiple Satellite Systems: Design, Control, Autonomy”
April 4, 2000, 4:00 p.m., GRIS 170: Dr. Boris Yendler (Lockheed Martin Astronautics Company), “Advanced Heat Pipes for Spacecraft Applications” (Heat Transfer Seminar)
April 14, 2000, 3:45 p.m., Ford Seminar Rm. ME 256: Prof. Daniel J. Inman (Virginia Polytechnic Inst. & State University), “Smart Damping” (Midwest Mechanics Seminar)
April 21, 2000, 3:45 p.m., Ford Seminar Rm. ME 256: Prof. John F. Brady (California Inst. of Tech.), “Dynamic Simulation of Suspensions: A New Tool for Multiphase Flow” (Midwest Mechanics Seminar)
April 27, 2000, 4:00 p.m., GRIS 170: Dr. William Bower (Technical Fellow, Boeing Phantom Works), “An Overview of STOVL Aircraft Aerodynamics and Acoustic Technology”

Faculty, Student, Alumni, Outreach Highlights and Future Outlook

FACULTY HIGHLIGHTS • Professor William Crossley won both the Elmer Bruhn Teaching Award and the W.A. Gustafson Best Teaching Award. • Professor James Doyle received the 1999 M. Hetenyi Award of the Society of Experimental Mechanics. • Professor Kathleen Howell was named Fellow of the American Astronautical Society. • Professor James Longuski and his students Gene Bonfiglio, Andrew Heaton, and Nathan Strange received a JPL NOVA Award for “Innovative Contributions to the Trajectory Design of the Europa Orbiter Mission.” • Professor Terrence Weisshaar was on sabbatical leave as a visiting scholar and research chair for the Center of Multidisciplinary Technology, at Wright-Patterson Air Force Base during the fall semester. • Faculty were invited for several keynote and plenary presentations detailed in their respective research descriptions.

STUDENT HIGHLIGHTS Nicole Key was honored with both the AAE Outstanding Senior Award and the Sigma Gamma Tau Outstanding Student Award. Nicole was also chosen the National Sigma Gamma Tau Outstanding Student with a perfect 4.0 GPA. A team of AAE students (Keith Hout, Michael Konigs, Craig Malmloff, Chris Peters, Brian Pfeiffer, Jeff Rodian, and Tyson Strutzenberg) under Professor William Crossley took 2nd place ( $2, 000) in t h e N a t i o na l G e n er a l A v ia t i o n D es i g n C o m p e t i t i o n f or t h e S i l a r i u s 490, an d w o n$ 3,000 for Best Use of Air Force Developed Technology. Steve Frolik won 1st place (graduate) and Shin Matsumura won 1st place (undergraduate) at the 2000 AIAA Regional Conference; Matthew Long received 3rd place (graduate). Matthew Basiletti and Michael J. Jungquist received the Elmer Bruhn Undergraduate Research Assistantship. Magoon Teaching Assistant Awards: Trisha Beutien, Govindarajan Kothandaraman, Michael Melchior, German Porras Alonso. William Koerner Scholarships: Douglas Crook, Damon Landau, Brandon Abel, Jeffrey McCormick, Nicole Key, Shin Matsumura. Herbert F. Rogers Scholarship: Stephanie VanY, Steven Wulf. Purdue Forever Fellowships: David Fanjoy, Patrick Golden. Student organizations: AAESAC, AHS, AIAA, SEDS, and SGT.

ALUMNI HIGHLIGHTS First Outstanding Aerospace Engineer Awards banquet held on October 21, 1999, attended by over 350 people. Thirty-nine alumni returned for the ceremony. Fourteen of Purdue’s astronaut alumni are graduates of the School.

OUTREACH HIGHLIGHTS • The 4th annual Fall Space Day: Over 250 elementary children attended; former astronaut Guy Gardner was featured speaker and lead teacher. • Indiana Space Grant Consortium (ISGC): Sponsored Indiana Aerospace Symposium with speaker Amy Ross; directed by Prof. Dominick Andrisani.

CHALLENGES AND OPPORTUNITIES • Engineering Master Facilities Plan (EMFP): Construction and move into the Millennium Building at Stadium and Northwestern. • Distance education initiative: Introduction of continuing education course AAE 590G (Multi-Disciplinary Design and Optimization) in Fall 2000. • ABET accreditation visit scheduled for Fall 2001.

Curriculum & Course Offerings Flowchart

CURRICULUM & COURSE OFFERINGS

Introductory Courses:

190: Introduction to Aerospace Engineering (Foundations: Math, Chemistry, Physics, Communications, Economics, Liberal Arts, Thermodynamics, Electrical Circuits, Computer Skills/Programming)
251: Introduction to Aerospace Design

Required Undergraduate Courses:

Aerodynamics: 333 (Fluid Mechanics & Lab), 334 (Aerodynamics and Lab)
Dynamics and Control: 203 (Aeromech. I - statics/dyn), 340 (Dynamics and Vibrations), 421 (Flight Dynamics & Lab) or 440 (Spacecraft Attitude Dynamics), 464 (Control System Analysis)
Propulsion: 372 (Jet Propulsion) or 439 (Rocket Propulsion)
Structures and Materials: 204 (Aeromech. II - Str of Mat. & Lab), 352 (Structural Analysis & Lab)

Undergraduate Electives:

Aerodynamics: 412 (Intro to CFD), 414 (Compressible Aero), 416 (Viscous Flows), 490G (Low Gravity Exp.)
Dynamics and Control: 361 (Intro to Random Variables), 421 (Flight Dynamics & Lab) or 440 (Spacecraft Attitude Dynamics), 474 (Exp. Flight Mechs.)
Propulsion: 372 (Jet Propulsion) or 439 (Rocket Propulsion)
Structures and Materials: 453 (Matrix Methods in Structure)

Design Electives:

Aerodynamics: 415 (Aerodynamic Design)
Dynamics and Control: 490r (Control Systems Design)
Propulsion: 490p (Propulsion Design)
Structures and Materials: 454 (Design of Aerospace Structure)
Capstone: 451 (Capstone Design - Aircraft or Spacecraft)

Undergraduate / Graduate Electives:

Aerodynamics: 511 (Intro. to Fluid Mech.), 512 (Computational Aero), 513 (Transonic Aero.), 514 (Intermediate Aerodynamics), 515 (Rotorcraft Aerodynamics), 517 (Unsteady Aerodynamics), 518 (Low Gravity Fluid Mech.), 519 (Satellite Aerodyn. & Planet. Entry), 520 (Experimental Aerodynamics)
Dynamics and Control: 507 (Principles of Dynamics), 508 (Optimization in Aero. Eng.), 531 (Flight Mechanics), 532 (Orbit Mechanics), 564 (Systems Anal. and Control), 565 (Guid. & Contrl. Aerosp. Veh.), 567 (Intro to Stochastic Proc.), 574 (Digital Flight Control Sys.)
Propulsion: 538 (Air Breathing Propulsion), 539 (Adv. Rocket Propulsion), 590k (Advanced Energy Conversion)
Structures and Materials: 546 (Aero. Structural Dyn. & Stability), 547 (Experimental Stress Anal.), 552 (Nondestructive Eval. of Str.&Matrl.), 553 (Elasticity in Aero. Eng), 554 (Fatigue in Struct. and Mat.), 555 (Mech. of Composite Mat.), 556 (Aeroelasticity), 558 (Finite Element Meth. Aero. Struct.), 559 (Mech. of Friction & Wear), 590e (Damage & Elas. In Adv Mat.), 590f (Design Theory and Methods), 590g (Multidisciplinary Design Opt.)

Graduate Electives:

General: 603 (Theoretical Methods)
Aerodynamics: 611 (Principles of Fluid Mech.), 613 (Viscous Flow Theory), 615 (Aeroacoustics), 626 (Turbulence & Turbulence Model.)
Dynamics and Control: 607 (Var. Prin. of Mechanics), 632 (Advanced Orbital Dynamics), 660 (Operator Methods on Crtl. Sup.), 664 (Uncertain Dyn. Systems), 666 (Nonlinear Dyn, Systems, Control), 684 (Design of Dyn. Systems)
Propulsion: 630 (Stability of Free Surfaces), 690a (Future Prop. Conc.), 690e (Optimal Trajectories), 690g (Astro. Nav. & Guidance), 690r (Multi-Feedback Control)
Structures and Materials: 646 (Elastic Wave Propagation), 652 (Theory of Plates & Shells), 654 (Fracture Mech), 655 (Composite Matrls. & Struct.)

Cooperative Education Courses:

241 (Industrial Practice I), 242 (Industrial Practice II), 341 (Industrial Practice III), 342 (Industrial Practice IV), 390 (Professional Internship), 442 (Industrial Practice V), 642 (Graduate Professional Practice)

School of Aeronautics and Astronautics 1999-2000 Research Report

Summary

Table of Contents

Our Mission and Academic Highlights

Enrollment, Degrees Awarded, and Development Highlights

Publications and Co-Op Program Overview

Co-Op Companies

Faculty for the 1999-00 Academic Year

Overview of Research Areas and Facilities

Faculty Summary - Aerodynamics: Gregory A. Blaisdell

Faculty Summary - Aerodynamics: Steven C. Collicott

Faculty Summary - Aerodynamics: Anastasios S. Lyrintzis

Faculty Summary - Aerodynamics: Steven P. Schneider

Faculty Summary - Aerodynamics: John P. Sullivan

Faculty Summary - Aerodynamics: Marc H. Williams

Faculty Summary - Dynamics & Control: Dominick Andrisani

Faculty Summary - Dynamics & Control: Martin Corless

Faculty Summary - Dynamics & Control: Arthur E. Frazho

Faculty Summary - Dynamics & Control: Kathleen C. Howell

Faculty Summary - Dynamics & Control: James M. Longuski

Faculty Summary - Dynamics & Control: Mario A. Rotea

Faculty Summary - Propulsion: Stephen D. Heister

Faculty Summary - Propulsion: John J. Rusek

Faculty Summary - Structures & Materials: William A. Crossley

Faculty Summary - Structures & Materials: James F. Doyle

Faculty Summary - Structures & Materials: Thomas N. Farris

Faculty Summary - Structures & Materials: Alten F. Grandt, Jr.

Faculty Summary - Structures & Materials: C. T. Sun

Faculty Summary - Structures & Materials: Terrence A. Weisshaar

Research and Other Scholarly Activities

Sponsored Research Projects Active During the Period July 1, 1999 to June 30, 2000

Graduate Theses - July 1999 to June 2000

Colloquium Series - 1999-2000

Faculty, Student, Alumni, Outreach Highlights and Future Outlook

Curriculum & Course Offerings Flowchart