Department of Aeronautics & Astronautics

Department of Aeronautics & Astronautics
AFIT Faculty: Bradley S. Liebst
CONTACT INFORMATION
Name: Bradley S. Liebst
Title: Professor of Aerospace Engineering
Head, Dept. of Aeronautics and Astronautics
Commercial Phone: (937) 255-3636 (4636)
DSN Phone: 785-3636 (4636)
EDUCATION

BS, Aeronautical Engineering, Wichita State University, Wichita, KS, 1978

MS, Aeronautical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 1979

PhD, Aeronautical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 1981

RESEARCH INTERESTS

Dr. Liebst's research interests include eigenstructure assignment and control, stability and control of aerospace vehicles, and passive and active control of large flexible structures. He has published over 40 articles and reports and chaired over 50 theses and dissertations.

EXPERTISE
  • CONTROL SYSTEMS
  • CONTROL THEORY
  • CONTROL THEORY AND DESIGN/OPTIMAL CONTROL/NONLINEAR CONTROL/INTELLIGENT CONTROL
  • DYNAMICS AND CONTROL
  • FLIGHT CONTROL
  • FLIGHT DYNAMICS AND CONTROL
  • FLIGHT TEST
  • SPACECRAFT DYNAMICS
  • STRUCTURAL DYNAMICS AND CONTROL
PUBLICATIONS & RESEARCH PAPERS

1. B. S. Liebst, "A Pitch Control System for Large Scale Wind Turbines", AIAA Journal of Energy, Vol. 7, No. 2, pp. 182-192, May-June 1983. 2. W. L. Garrard and B. S. Liebst, "Active Flutter Suppression Using Eigenspace and Linear Quadratic Design Techniques", AIAA Journal of Guidance, Control, and Dynamics, Vol. 8, No. 3, pp. 304-311, May-June 1985. 3. B. S. Liebst, "A Pitch Control System for the KaMeWa Wind Turbine", ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 107, pp. 47-52, March 1985. 4. B. S. Liebst, W. L. Garrard, and W. M. Adams, "Design of an Active Flutter Suppression System", AIAA Journal of Guidance, Control, and Dynamics, Vol. 9, No. 1, pp. 64-71, Jan-Feb 1986. 5. B. S. Liebst, "Wind Turbine Gust Load Alleviation Utilizing Curved Blades", AIAA Journal of Propulsion and Power, Vol. 2, No. 4, pp. 371-377, July-August 1986. 6. B. S. Liebst, "Accelerometer Placement in Active Flutter Suppression Systems", AIAA Journal of Guidance, Control, and Dynamics, Vol. 10, No. 5, pp. 441-446, September-October 1987. 7. B. S. Liebst, W. L. Garrard, and J. A. Farm, "Design of a Multivariable Flutter Suppression/Gust Load Alleviation System", AIAA Journal of Guidance, Control, and Dynamics, Vol. 11, No. 3, pp. 220-229, May-June 1988. 8. B. S. Liebst, W. L. Garrard, "Design of a Multivariable Helicopter Flight Control System for Handling Qualities Enhancement", Journal of the American Helicopter Society, Vol. 35, No. 4, pp. 23-30, October 1990. 9. M. Gaudreault, B. S. Liebst, R. Bagley, "Simultaneous Design of Active Vibration Control and Passive Viscous Damping", AIAA Journal of Guidance, Control, and Dynamics, Vol. 16, No. 4, pp. 654-661, July-August 1993. 10. B. S. Liebst and R. C. Nolan, “Method for the Prediction of the Onset of Wing Rock”, AIAA Journal of Aircraft, Vol. 31, No. 6, pp. 1419-1421, November-December, 1994. 11. B. S. Liebst and P. Torvik, "Asymptotic Approximations for Systems Incorporating Fractional Derivative Damping", ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 118, No. 3, pp. 572-579, September, 1996. 12. R. Cobb, R. Canfield, and B. S. Liebst, “Finite Element Model Tuning Using the Automated Structural Optimization System Software”, AIAA Journal, Vol. 34, No. 2, February 1996, pp. 392-399. 13. B. S. Liebst and R. Cobb, “Structural Damage Identification Using Assigned Partial Eigenstructure”, AIAA Journal, Vol. 35, No. 1, January 1997, pp. 152-158. 14. B. S. Liebst and R. Cobb, “Sensor Placement and Structural Damage Identification From Minimal Sensor Information”, AIAA Journal, Vol. 35, No. 2, February 1997, pp. 369-374. 15. B. S. Liebst, “The Dynamics, Prediction, and Control of Wing Rock in High-Performance Aircraft”, Philosophical Transactions of the Royal Society, London, No. 356, 1998, pp. 2257-2267. 16. B. S. Liebst, Chapa, M., and Leggett, D., “Nonlinear Pre-Filter to Prevent Pilot-Induced Oscillations Due to Actuator Rate Limiting”, AIAA Journal of Guidance, Control and Dynamics, Vol. 25, No. 4, July-August 2002, pp. 740-747. 17. B. S. Liebst, Saad, A., and Gordnier, R. , “The Fluid Mechanism of Wing Rock for Configurations with Chine-Shaped Forebodies”, Journal of Aerospace Engineering, Vol. 15, No. 4, October 2002, pp. 125-135. 18. B. S. Liebst, Saad, A., “Computational Simulation of Wing Rock in Three Degrees-of-Freedom for a Generic Fighter With Chine-Shaped Forebody”, The Aeronautical Journal, Vol. 107, No. 1067, January 2003, pp. 49-56. 19. W. Baker and B. S. Liebst, “An Improved Asymptotic Approximation for Systems Incorporating Fractional Derivative Damping Models”, ASME Journal of Dynamic Systems, Measurement, and Control. (Under Review)

AWARDS & HONORS

Associate Fellow, American Institute of Aeronautics and Astronautics (AIAA)

Sigma Gamma Tau (Aeronautical Engineering)

Tau Beta Pi (Engineering)

1987 Best Institute of Technology Professor at University of Minnesota

2002 Best Paper of the Year from the Journal of Aerospace Engineering

COURSES

AEROSPACE SURVEY AND LABORATORY

STATICS 

DYNAMICS 

INTRODUCTION TO DYNAMICAL SYSTEMS 

FLIGHT MECHANICS

RANDOM VIBRATIONS

AUTOMATIC FLIGHT CONTROL SYSTEMS 

AEROELASTICITY 

DYNAMICS OF AEROSPACE SYSTEMS

THEORY OF VIBRATIONS

OPTIMAL AIRCRAFT PERFORMANCE   

FUNCTIONAL OPTIMIZATION AND OPTIMAL CONTROL

AIRCRAFT HANDLING QUALITIES

CONTROL OF FLEXIBLE SPACECRAFT

SPACECRAFT STABILITY

LINEAR SYSTEMS ANALYSIS

CONTROL AND STATE SPACE CONCEPTS

MULTIVARIABLE CONTROL THEORY

DIGITAL CONTROL

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