Company

John Schierman, Ph.D. - Principal Research Scientist

Dr. Schierman joined Barron Associates in 1999. At Barron Associates he has been involved with the development of intelligent reconfigurable control laws for VTOL UAVs and helicopter active control technologies. Dr. Schierman has also been the principal investigator of a number of programs involved with reconfigurable guidance systems for Reusable Launch Vehicles (RLVs).

From 1989 to 1994, Dr. Schierman developed multivariable integrated flight/propulsion control law synthesis/analysis methodologies as a part of his graduate studies. Dr. Schierman worked as a faculty research associate at the University of Maryland from 1994 to 1997. There he was involved in several consulting and research projects involving aircraft simulations, dynamic modeling/analysis of ASTOVL aircraft, synthesis of analog/digital control laws, analysis of fly-by-wire autopilots, and development of autonomous satellite attitude/orbit determination algorithms.

From 1997 to 1999, Dr. Schierman worked as a systems engineer for Boeing Aircraft and Missile Systems. He was primarily involved with advanced missile development projects managed by Boeing's Phantom Works. At Boeing he developed a real-time fire control algorithm for an anti-missile missile system.

Dr. Schierman was awarded a Ph.D. in Aerospace Engineering in 1996 from Arizona State University. Dr. Schierman earned a Master of Science in Aeronautics and Astronautics from Purdue University in 1988, and a Bachelor of Aerospace Engineering from Georgia Tech in 1984. Dr. Schierman is a Senior Member of AIAA, a member of IEEE and a member of ASNE (American Society of Naval Engineers). He has also held membership in ASME and ASEE (American Society for Engineering Education).

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Representative Publications, Patents and Presentations

Horn, J.F., Sparbanie, S. M., Cooper, J.K., Schierman, J.D., "On-Line Identification of Ship Airwake Disturbances on Rotorcraft," Presented at the American Helicopter Society 65th Annual Forum, Grapevine, TX, May 2009.

Schierman, J.D., Ward, D.G., Dutoi, B.C., et al., "Run-Time Verification and Validation for Safety-Critical Flight Control Systems," AIAA Paper 2008-6338, Proceedings of the AIAA Guidance, Navigation, and Control Conference, Honolulu, HI, August 2008.

Horn, J.F., Sparbanie, S.M., Cooper, J.K., Schierman, J.D., "Adaptive Gust Alleviation for a Tilt-Rotor UAV Operating in Turbulent Airwakes," AIAA Paper 2008-6514, Proceedings of the AIAA Guidance, Navigation, and Control Conference, Honolulu, HI, August, 2008.

Schierman, J.D., Lichter, M.D., McCormick, A.V., "Strategies for Intercepting Multiple Missiles Exercising Evasive Maneuvers," SBIR Phase I Final Technical Report, submitted to the Air Force Research Laboratory, Space Vehicles Directorate, Kirkland Air Force Base, July 2008.

Schierman, J.D., Cooper, J.K., Horne, J.F., "Innovative Rotorcraft Control for Shipboard Operations," SBIR Phase I Final Technical Report, Submitted to the Naval Air Warfare center (NAVAIR), October 2007.

Schierman, J.D., Ward, D.G., Dutoi, B.C., Li, G., Aiello, A.M., Berryman, J.F., "Run-Time Validation and Verification for Safety-Critical Flight Control Systems," SBIR Phase II, Final Technical Report Volume 1, submitted to the Air Force Lab, (AFRL/VACC), March 2007.

Schierman, J.D., Ward, D.G., McCormick, A.V., "UAV Shipboard Operations: Simulation Model Development: System Description Document, Model Description Report, and User's/Programmer's Guide," Submitted to the Naval Air Warfare Center (PAX), November 2006.

Lu, P., Doman, D., Schierman, J., "Adaptive Terminal Guidance for Hypervelocity Impact in Specified Direction," Journal of Guidance, Control, and Dynamics, Vol. 29, No. 2, March-April 2006, pp. 269-278.

Schierman, J.D., Lichter, M.D., McCormick, A.V., "An Integrated Ground-Based and Onboard Adaptive Path Generation Tool for Rapid Mission Planning and Operations," SBIR Phase I Final Technical Report, submitted to Air Force Research Lab, Air Vehicles Directorate, Control Theory Optimization Branch/Control Science Center of Excellence, January 20, 2006.

Schierman, J.D., Hull, J.R., Gandhi, N., Gressick, W.T., "Adaptive Guidance Systems for Hypersonic Vehicles with Reconfigurable Inner-Loop Control," Barron Associates, Inc., SBIR Phase II Extension Final Technical Report, submitted to Air Force Research Lab, Air Vehicles Directorate, Control Theory Optimization Branch/Control Science Center of Excellence, December 2005.

Schierman, J., Hull, J., "Onboard Spacecraft Entry Trajectory Command Planning and Real-Time Generation," Proceedings of NASA Goddard Space Flight Center's Flight Mechanics Symposium, October 2005.

Hull, J., Gandhi, N., Schierman, J., "In-Flight TAEM/Final Approach Trajectory Generation for Reusable Launch Vehicles," AIAA Paper 2005-7114, Proceedings of the AIAA Infotech@Aerospace Conference, Arlington, VA, September 2005.

Bateman, J., Elks, C., Ward, D., Schierman, J., "New Verification and Validation Methods for Guidance/Control of Advanced Autonomous Systems," AIAA Paper 2005-7117, Proceedings of the AIAA Infotech@Aerospace Conference, Arlington, VA, September 2005.

Schierman, J., Hull, J., "In-Flight Entry Trajectory Optimization for Reusable Launch Vehicles," AIAA Paper 2005-6434, Proceedings of the AIAA Guidance, Navigation, and Control Conference, San Francisco, CA, August 2005.

Lu, P., Doman, D., Schierman, J., "Adaptive Terminal Guidance for Hypervelocity Impact in Specified Direction," AIAA Paper 2005-6059, Proceedings of the AIAA Guidance, Navigation, and Control Conference, San Francisco, CA, August 2005.

Schierman, J.D., Hull, J.R., Gandhi, N., "Reconfigurable Guidance for Reusable Launch Vehicles," Barron Associates, Inc., SBIR Phase II Final Technical Report, submitted to NASA, George D. Marshall Space Flight Center, June 30, 2005.

Schierman, J.D., Ward, D.G., Hull, J.R., Gandhi, N., Oppenheimer, M.W., Doman, D.B., "Integrated Adaptive Guidance and Control for Re-Entry Vehicles with Flight Test Results," Journal of Guidance, Control, and Dynamics, Vol. 27, No. 6, Nov-Dec. 2004, pp. 975-988.

Schierman, J., Ward, D., Hull, J., and Gandhi, N., "Intelligent Guidance and Trajectory Command Systems for Autonomous Space Vehicles," AIAA Paper 2004-6253, Proceedings of the AIAA 1st Intelligent Systems Technical Conference, Chicago, Illinois, Sept. 2004.

Schierman, J., Gandhi, N., Hull, J., and Ward, D., "Flight Test Results of an Adaptive Guidance System for Reusable Launch Vehicles," AIAA Paper 2004-4771, Proceedings of the AIAA Guidance, Navigation, and Control Conference, Providence, Rhode Island, Aug., 2004.

Schierman, J., Hull, J., and Ward, D., "On-Line Trajectory Command Reshaping For Reusable Launch Vehicles," AIAA Paper 2003-5439, Proceedings of the AIAA Guidance, Navigation, and Control Conference, Austin, Texas, Aug., 2003.

Schierman, J.D, J.R. Hull, D.G. Ward, “Adaptive Guidance with Trajectory Reshaping for Reusable Launch Vehicles,” Proc. AIAA Guidance, Navigation, and Control Conf., Monterey, California, Aug. 2002, AIAA Paper No. 2002-4458.

Schierman, J.D, J.R. Hull, D.G. Ward, “Development Of Adaptive Guidance Systems For Hypersonic Vehicles With Simulation Support For The X-33 Vehicle,” Final Technical Report for Purchase Order H-33363D, NASA Marshall Space Flight Center, September, 2001.

Schierman, J.D, D.G. Ward, J.F. Monaco, J.R. Hull, “A Reconfigurable Guidance Approach For Reusable Launch Vehicles,” Proc. AIAA Guidance, Navigation, and Control Conf., Montreal, Canada, Aug. 2001, AIAA Paper No. 2001-4429.

Schierman, J.D, J.R. Hull, D.G. Ward, Ruth, M.J., “Reconfigurable Guidance For Energy Management Of Hypersonic Vehicles,” Final Technical Report for Contract No. NAS [8-01007]; 2000 NASA Marshall Space Flight Center Phase I SBIR Topic 03.01, Advanced Launch Vehicle Systems, August, 2001.

Ward, D.G., Schierman, J.D., Skriloff, O.N., Monaco, J.F., “Intelligent Control System Analysis Tool with Autonomous VTOL UAV Landing Demonstration,” Barron Associates, Inc. Final Technical Report for Contract No. N00178-99-C-1010: SBIR Topic N97-120, Phase II, Aug. 2001.

Schierman, J.D, D.G. Ward, J.R. Hull, J.F. Monaco, M.J. Ruth, “Adaptive Guidance Systems for Hypersonic Reusable Launch Vehicles,” Proc. IEEE Aerospace Conference, Big Sky, MT, March, 2001.

Schierman, J.D., Ward, D.G., Monaco, J.F., Hull, J.R., Ruth, M.J., “Adaptive Guidance Systems For Hypersonic Vehicles With Reconfigurable Inner-Loop Control,” Final Technical Report for Contract No. F33615-00-C-3036; Air Force SBIR Topic AF00-279, Phase I, February, 2001.

Schierman, J.D, D.G. Ward, J.F. Monaco, J.R. Hull, and T.H. Lawrence, "On-Line Identification and Nonlinear Control of Rotorcraft/External-Load Systems," Proc. AIAA Guidance, Navigation, and Control Conf., Denver, CO, Aug. 2000, AIAA Paper No. 2000-4042.

Ward, D.G., J.F. Monaco, and J.D. Schierman, "Reconfigurable Control For VTOL UAV Shipboard Landing," Proc. AIAA Guidance, Navigation, and Control Conf., Portland, OR, Aug. 1999.

Schierman, J.D., D.G. Ward, R.L. Barron, J.F Monaco, J.R. Hull, A.K. Ishihara, "Helicopter Active Control Technology," Barron Associates, Inc. Final Technical Rept. for Sikorsky Aircraft Corporation, Contract S0995983, July 1999.

Schierman, J.D., J. Deutschmann, and D.K. Schmidt, "Attitude And Trajectory Determination Using Magnetometers And Estimated Rates," Proc. Flight Mechanics Symp., NASA Goddard Space Flight Center, May 1997, pp. 319-330.

Schierman, J.D. and D.K. Schmidt, "Limitations of Decentralized Control," J. Guidance, Control, and Dynamics, Vol. 20, No 2, Mar.-Apr. 1997, pp. 384-390.

Schierman, J.D., "On Limitations of Block-Decentralized Control Laws," Doctoral Dissertation, Arizona State University, Aug. 1996.

Schierman, J.D. and D.K. Schmidt, "Limitations Of Block-Decentralized Control With Implications For ASTOVL Aircraft," AIAA Paper 96-3921, Proc. AIAA Guidance, Navigation, and Control Conf., San Diego, CA, July 1996.

Schmidt, D.K. and J.D. Schierman, "Cooperative Control Theory and Integrated Flight/Propulsion Control, Final Report, Summary of Research Milestones, 1990-1994," Dept. of Aerospace Engineering, University of Maryland, presented to the NASA Lewis Research Center, Cleveland, OH, Sept. 1995.

Schierman, J.D. and D.K. Schmidt, "Limitations Of Decentralized Control Laws," AIAA Paper 95-3198, Proc. AIAA Guidance, Navigation, and Control Conf., Baltimore, MD, Aug. 1995, pp. 234-246.

Schierman, J.D., A.A. Rodriguez, and D.K. Schmidt, "Feasibility Of Decentralized Control Architectures For Highly Coupled Flight/Propulsion Systems," Proc. 33rd IEEE Conf. Decision and Control, Orlando, FL, Dec. 1994, pp. 3342-3348.

Schierman, J.D. and D.K. Schmidt, "Performance Limitations Of Decentralized Control Laws For Integrated Flight And Propulsion Control," AIAA Paper 94-3614, Proc. AIAA Guidance, Navigation, and Control Conf., Scottsdale, AZ, Aug. 1994, pp. 626-636.

Schierman, J.D., T.A. Lovell, and D.K. Schmidt, "A Comparative Study Of Multivariable Robustness Analysis Methods As Applied To Integrated Flight And Propulsion Control," AIAA Paper 93-3809, Proc. AIAA Guidance, Navigation, and Control Conf., Monterey, CA, Aug. 1993, pp. 984-994.

Schierman, J.D. and D.K. Schmidt, "Analysis Of Airframe And Engine Control Interactions And Integrated Flight/Propulsion Control," J. Guidance, Control, and Dynamics, Vol. 15, No. 6, Nov.-Dec. 1992, pp. 1388-1396.

Schierman, J.D., T.A. Lovell, and D.K. Schmidt, "An Extended Multivariable Analysis Technique With Application To Airframe/Engine Interactions," AIAA Paper 92-4623, Proc. AIAA Guidance, Navigation, and Control Conf., Hilton Head, SC, Aug. 1992, pp. 1513-1523.

Schierman, J.D. and D.K. Schmidt, "Analysis Of Airframe/Engine Interactions In Integrated Flight And Propulsion Control," AIAA Paper 91-2794, Proc. AIAA Guidance, Navigation, and Control Conf., New
Orleans, LA, Aug. 1991, pp. 1643-1651.

Schmidt, D.K. and J.D. Schierman, "A Framework For The Analysis Of Airframe/Engine Interactions And Integrated Flight/Propulsion Control," Proc. Am. Control Conf., Boston, MA, June 1991, pp. 761-766.

Andrisani, D., E.T. Kim, J.D. Schierman, and F.P. Kuhl, "A Nonlinear Helicopter Tracker Using Attitude Measurements," IEEE Trans. Aerospace and Electronic Systems, Vol. 27, No. 1, Jan. 1991, pp. 40-47.

Schierman, J.D. and D.K. Schmidt, "Robust Control Synthesis For Integrated Flight And Propulsion Control," invited paper presented at 29th IEEE Conf. Decision and Control, Honolulu, HA, Dec. 1990.

Schierman, J.D. and D. Andrisani, "Linear Helicopter Trackers Using Attitude Measurements," J. Guidance, Control, and Dynamics, Vol. 13, No. 6, Nov.-Dec. 1990, pp. 929-935.

Schmidt, D.K., and J.D. Schierman, "Extended Implicit Model Following As Applied To Integrated Flight And Propulsion Control," AIAA Paper 90-3444, Proc. AIAA Guidance, Navigation, and Control Conf., Portland, OR, Aug. 1990, pp. 1159-1169.

Schmidt, D.K., J.D. Schierman, and S. Garg, "Analysis Of Airframe/Engine Interactions - An Integrated Control Perspective," AIAA Paper 90-1918, presented at AIAA/ASME/SAE/ASEE 26th Joint Propulsion Conf., Orlando, FL, July 1990.

Schierman, J.D., Tracking Fixed Wing Aircraft and Helicopters Using Attitude and Rotor Angle Information, Master's Thesis, Purdue University, May 1988.

Andrisani, D. and J.D. Schierman, "Tracking Maneuvering Helicopters Using Attitude And Rotor Angle Measurements," Proc. 21st Annual Asilomar Conf. Signals, Systems and Computers, IEEE Computer Soc., Asilomar, CA, Nov. 1987, pp. 328-333.

Andrisani D., E.T. Kim, and J.D. Schierman, "Helicopter Flight Path Prediction: Final Report," School of Aeronautics and Astronautics, Purdue University, presented to U.S. Army Armament Research and Development Center, Dover, NJ, June 1987.

Andrisani, D., F.P. Kuhl, and J.D. Schierman, "Helicopter Tracking Using Attitude Measurements," Proc. 8th Meeting of the Coordinating Group on Modern Control Theory, U.S. Army Tank Automotive Command, Warren, MI, Feb. 1987. .