CONDUIT® Technical Papers
- Tischler, M. B., Berger, T., Ivler, C. M., Mansur, M. H., Cheung, K. K., Soong, J. Y., "Practical Methods for Aircraft and Rotorcraft Flight Control Design: An Optimization-Based Approach," AIAA, 2017.
- Tischler, M. B., Colbourne, J. D., Morel, M. R., Biezad, D. J., Levine, W. S., Moldoveanu, V., "CONDUIT-A New Multidisciplinary Integration Environment for Flight Control Development," [pdf] Proceedings of the AIAA Guidance, Navigation, and Control Conference, New Orleans, LA, August 11–13, 1997.
- Colbourne, J. D., “The Development of the CONDUIT Advanced Control System Design and Evaluation Interface with a Case Study Application to an Advanced Fly by Wire Helicopter Design,” [pdf] Published as a NASA Technical Memorandum, March 1999.
- Colbourne, J. D., Frost, C. R., Tischler, M. B., Cheung, K. K., Hiranaka, D. K., Biezad, D. J., “Control Law Design and Optimization for Rotorcraft Handling Qualities Criteria Using CONDUIT,” [pdf] Proceedings of the American Helicopter Society 55th Annual Forum, Montréal, Canada, May 25–27, 1999.
- Frost, C. R., Tischler, M. B., Bielefield, M., LaMontagne, T., "Design and Test of Flight Control Laws for the Kaman BURRO Unmanned Aerial Vehicle," [pdf] AIAA Atmospheric Flight Mechanics Conference, Denver, CO, August 14–17, 2000.
- Tischler, M. B., Lee, J. A., Colbourne, J. D., “Optimization and Comparison of Alternative Flight Control System Design Methods Using a Common Set of Handling-Qualities Criteria,” [pdf] Proceedings of the AIAA Guidance, Navigation, and Control Conference, Montréal, Canada, August 6–9, 2001.
- Johnson, C. K., Mittleider, D., Tischler, M. B., Cheung, K. K., “Analysis, Design, & Optimization of the Helicopter Active Control Technology (HACT) Flight Control System,” [pdf] Proceedings of the American Helicopter Society 58th Annual Forum, Montréal, Canada, June 11–13, 2002.
- Tischler, M. B., Blanken, C. L., Cheung, K. K., Swei, S. S. M., Sahasrabudhe, V., Faynberg, A., “Optimization and Flight Test Results of Modern Control Laws for the UH-60 Black Hawk,” [pdf] Proceedings of the American Helicopter Society 4th Decennial Specialists' Conference on Aeromechanics, San Francisco, CA, January 21–23, 2004.
- Tischler, M. B., Blanken, C. L., Cheung, K. K., Swei, S. S. M., Sahasrabudhe, V., Faynberg, A., “Modernized Control Laws for UH-60 Black Hawk Optimization and Flight-Test Results,” [pdf] AIAA Journal of Guidance, Control and Dynamics, Vol. 28, No. 5, September–October 2005.
- Harding, J. W., Moody, S. J., Mansur, M. H., Tischler, M. B., “Development of Modern Control Laws for the AH-64D in Hover/Low Speed Flight,” [pdf] Proceedings of the American Helicopter Society 62nd Annual Forum, Phoenix, AZ, May 9–11, 2006.
- Downs, J., Prentice, R., Dalzell, S., Besachio, A., Ivler, C. M., Tischler, M. B., Mansur, M. H., “Control System Development and Flight Test Experience with the MQ-8B Fire Scout Vertical Take-Off Unmanned Aerial Vehicle (VTUAV),” [pdf] Proceedings of the American Helicopter Society 63rd Annual Forum, Virginia Beach, VA, May 1–3, 2007.
- Christensen, K. T., Campbell, K. G., Griffith, C. D., Ivler, C. M., Tischler, M. B., Harding, J. W., “Flight Control Development for the ARH-70 Armed Reconnaissance Helicopter Program,” [pdf] Proceedings of the American Helicopter Society 63rd Annual Forum, Virginia Beach, VA, May 1-3, 2007.
- Harding, J. W., Mansur, M. H., Tischler, M. B., Moody, S. J., McCann, R. C., “Optimization and Piloted Simulation Results of the AH-64D Modern Control Laws,” [pdf] Proceedings of the American Helicopter Society 63rd Annual Forum, Virginia Beach, VA, May 1–3, 2007.
- Fletcher, J. W., Lusardi, J. A., Moralez III, E., Robinson, D. E., Arterburn, D. R., Cherepinsky, I., Driscoll, J., Morse, C. S., Kalinowski, K. F., “UH-60M Upgrade Fly-By-Wire Flight Control Risk Reduction using the RASCAL JUH-60A In-Flight Simulator, [pdf]” Proceedings of the American Helicopter Society 64th Annual Forum, Montréal, Canada, April 29–May 1, 2008.
- Tischler, M. B., Ivler, C. M., Mansur, M. H., Cheung, K. K., Berger, T., Berrios, M. G., “Handling-Qualities Optimization and Trade-offs in Rotorcraft Flight Control Design,” [pdf] Proceedings of the RAeS Rotorcraft Handling-Qualities Conference, University of Liverpool, United Kingdom, November 4–6, 2008.
- Mansur, M. H., Lusardi, J. A., Tischler, M. B., Berger, T., “Achieving the Best Compromise between Stability Margins and Disturbance Rejection Performance,” [pdf] Proceedings of the American Helicopter Society 65th Annual Forum, Grapevine, TX, May 27–29, 2009.
- Berger, T., Tischler, M. B., Blanken, C. L., Fujizawa, B. T., Harding, J. W., Borden, C. C., Cothren, L. E., Wright, J. J., Arterburn, D. R., Pfrommer, M. R., “Improved Handling Qualities for the OH-58D Kiowa Warrior in the Degraded Visual Environment,” [pdf] Proceedings of the American Helicopter Society 67th Annual Forum, Virginia Beach, VA, May 3–5, 2011.
- Link, D. W., Kashawlic, B. E., Fujizawa, B. T., Tischler, M. B., “Influence of Frequency Response Analysis on MH-47G DAFCS Development and Flight Test,” [pdf] Proceedings of the American Helicopter Society 67th Annual Forum, Virginia Beach, VA, May 3–5, 2011.
- Mansur, M. H., Tischler, M. B., Bielefield, M. D., Bacon, J. W., Cheung, K. K., Berrios, M. G., Rothman, K. E., “Full Flight Envelope Inner-Loop Control Law Development for the Unmanned K- MAX®,” [pdf] Proceedings of the American Helicopter Society 67th Annual Forum, Virginia Beach, VA, May 3–5, 2011.
- Ivler, C. M., Tischler, M. B., Powell, J. D., “Cable Angle Feedback Control Systems to Improve Handling Qualities for Helicopters with Slung Loads,” [pdf]Proceedings of the AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 8–11, 2011.
- Fujizawa, B. T., Tischler, M. B., Arlton, P. E., Arlton, D. J., “Control System Development and Flight Testing of the Tiger Moth UAV,” [pdf] Proceedings of the American Helicopter Society 68th Annual Forum, Fort Worth, TX, May 1–3, 2012.
- Ivler, C. M., Powell, J. D., Tischler, M. B., Fletcher, J. W., Ott, C., “Design and Flight Test of a Cable Angle/Rate Feedback Flight Control System for the RASCAL JUH-60 Helicopter,” [pdf] Proceedings of the American Helicopter Society 68th Annual Forum, Fort-Worth, TX, May 1–3, 2012.
- Juhasz, O., Celi, R., Ivler, C. M., Tischler, M. B., Berger, T., “Flight Dynamic Simulation Modeling of Large Flexible Tiltrotor Aircraft,” Proceedings of the American Helicopter Society 68th Annual Forum, Fort Worth, TX, May 1–3, 2012. [pdf]
- Berger, T., Tischler, M. B., Hagerott, S. G., Gangsaas, D., Saeed, N., “Longitudinal Control Law Design and Handling Qualities Optimization for a Business Jet Flight Control System,” [pdf] Proceedings of the AIAA Atmospheric Flight Mechanics Conference, Minneapolis, MN, August 13–16, 2012.
- Mansur, M. H., Tischler, M. B., “Flight Test Comparison of Alternate Strategies for Multi-Loop Control Law Optimization,” [pdf] Proceedings of the American Helicopter Society 69th Annual Forum, Phoenix, AZ, May 21–23, 2013.
- Berger, T., Tischler, M. B., Hagerott, S. G., Gangsaas, D., Saeed, N., “Lateral/Directional Control Law Design and Handling Qualities Optimization for a Business Jet Flight Control System,” [pdf] Proceedings of the AIAA Atmospheric Flight Mechanics Conference, Boston, MA, August 19–22, 2013.
- Berrios, M. G., Tischler, M. B., Cicolani, L. S., Powell, J. D., “Stability, Control, and Simulation of a Dual Lift System Using Autonomous R-MAX Helicopters,” [pdf] Proceedings of the American Helicopter Society 70th Annual Forum, Montreal, Canada, May 20–22, 2014.
- Fujizawa, B. T., Tischler, M. B., Ott, C. R., Blanken, C. L., “UH-60 Partial Authority Modernized Control Laws for Improved Handling Qualities in the Degraded Visual Environment,” [pdf] Proceedings of the American Helicopter Society 70th Annual Forum, Montreal, Canada, May 20–22, 2014.
- Theodore, C. R., Malpica, C. A., Blanken, C. L., Tischler, M. B., Lawrence, B., Lindsey, J. E., Berger, T., “Effect of Control System Augmentation on Handling Qualities and Task Performance in Good and Degraded Visual Environments,” [pdf] Proceedings of the American Helicopter Society 70th Annual Forum, Montreal, Canada, May 20–22, 2014.
- Berger, T., Tischler, M. B., Hagerott, S. G., “Piloted Simulation Handling Qualities Assessment of a Business Jet Fly-By-Wire Flight Control System,” [pdf] Proceedings of the AIAA SciTech Conference, Kissimmee, FL, January 5–9, 2015.
- Wei, W., Tischler, M. B., “System Identification and Controller Optimization of a Quadrotor UAV,” [pdf] Proceedings of the American Helicopter Society 71st Annual Forum, Virginia Beach, VA, May 5–7, 2015.
- Fujizawa, B., T., Tischler, M. B., Minor, J. S., “Outer-Loop Development and DVE Flight Test Assessment of a Partial Authority Model-Follow Control System for the UH-60,” [pdf] Proceedings of the American Helicopter Society 72nd Annual Forum, West Palm Beach, FL, May 17–19, 2016.
- Berger, T., Tischler, M. B., Hagerott, S. G., et al., “Handling Qualities Flight Test Assessment of a Business Jet NzU P-β Fly-By-Wire Control System,” [pdf] Proceedings of the AIAA Atmospheric Flight Mechanics Conference, AIAA Science and Technology Forum and Exposition, Grapevine, Texas, January 9–13, 2017.
- Berrios, M. G., Berger, T., Tischler, M. B., Juhasz, O., Sanders, F. C., “Hover Flight Control Design for UAS using Performance-based Disturbance Rejection Requirements,” [pdf] Proceedings of the American Helicopter Society 73rd Annual Forum, Fort Worth, TX, May 9–11, 2017.
- Cheung, K. K., Wagster, J. A., IV., Tischler, M. B., Ivler, C. M., Berrios, M. G., Berger, T., Juhasz, O., Tobias, E. L., Goerzen, C. L., Barone, P. S., Sanders, F. C., Lopez, M. J. S., Lehmann, R. M., “An Overview of the U.S. Army Aviation Development Directorate Quadrotor Guidance, Navigation, and Control Project,” [pdf] Proceedings of the American Helicopter Society 73rd Annual Forum, Fort Worth, TX, May 9–11, 2017.
- Knapp, M. E., Ivler, C. M., Berrios, M. G., Berger, T., Tischler, M. B., “Kalman Filter Estimation of Rotor-State Flapping: An Optimization-based Approach with UH-60 Flight Test Data,” [pdf] Proceedings of the American Helicopter Society 73rd Annual Forum, Fort Worth, TX, May 9–11, 2017.
- Cho, S. H., Bhandari, S., Sanders, F. C., Cheung, K. K., Tischler, M. B., “System Identification and Controller Optimization of a Coaxial Quadrotor UAV in Hover,” [pdf] Proceedings of the AIAA Scitech Forum, San Diego, CA, January 7–11, 2019.
- Lopez, M. J. S., Tischler, M. B., Takahashi, M. D., Cheung, K. K., and Prasad, J.V.R., “Development and Evaluation of a Full Flight Envelope Integrated Flight and Vibration Controller,” Journal of the American Helicopter Society, Volume 64, Number 1, pp. 1-11(11), January 2019.
- Berger, T., Blanken, C. L., Tischler, M. B., and Horn, J. F., [pdf]“Flight Control Design and Simulation Handling Qualities Assessment of High-Speed Rotorcraft,” [pdf] Proceedings of the Vertical Flight Society’s 75th Annual Forum Proceedings, Philadelphia, PA, May 13–16, 2019.
- Lopez, M. J. S., Tischler, M. B., Juhasz, O., Gong, A., Sanders, F. C., Soong, J. Y., and Nadell, S. J., “Flight Test Comparison of Gust Rejection Capability for Various Multirotor Configurations,” [pdf] Proceedings of the Vertical Flight Society’s 75th Annual Forum & Technology Display, Philadelphia, PA, May 13–16, 2019.
- Knapp, M.E., Ivler, C. M., Horn, J. F., Johnson, E. N., Bridges, D. O., Lopez, M. J. S., Tischler, M. B., Wagster, J. A., and Cheung, K. K., “Development and Simulation of Damage Tolerant Control Laws for a Compound Helicopter,” [pdf] Proceedings of the AIAA SciTech Guidance Navigation and Control Conference, Orlando, January 6–10, 2020.
- Niemeic, R., Gandhi, F., Lopez, M. J. S., and Tischler, M. B., “System Identification and Handling Qualities Predictions of an eVTOL Urban Air Mobility Aircraft Using Modern Flight Control Methods,” [pdf] Proceedings of the Vertical Flight Society’s 76th Annual Forum & Technology Display, Virtual, October 6–8, 2020.
- Raz, R., Rosen, A., Nadell, S. J., Cicolani, L., Horn, J. F., Enciu, J., Chen, Z., Tischler, M. B., and Cheung, K. K., “Hardware-in-the-loop dynamic wind tunnel investigation of slung loads dynamics with application to active cargo hook stabilization of an M119 howitzer,” [pdf] Proceedings of the Vertical Flight Society’s 76th Annual Forum & Technology Display, Virtual, October 6–8, 2020.
- Berger, T., Tischler, M. B., and Horn, J. F., “Outer-Loop Flight Control Design and Simulation Handling Qualities Assessment for Coaxial-Compound and Tiltrotor Aircraft,” [pdf] Proceedings of the Vertical Flight Society’s 76th Annual Forum Proceedings, October 2020.
- Berger, T., Tischler, M. B., and Horn, J. F., “High-Speed Rotorcraft Pitch Axis Response Type Investigation,” [pdf]Proceedings of the Vertical Flight Society’s 77th Annual Forum Proceedings, May 2021.
- McKay, M., Vayalali, P., Gandhi, F., Berger, T., and Lopez, M. J. S., “Redistributed Allocation for Flight Control Failure on a Coaxial Helicopter,” [pdf] Proceedings of the Vertical Flight Society’s 77th Annual Forum & Technology Display, Virtual, May 11–13, 2021.
- Gong, A., Tischler, M. B., and Hess, R. A., “Deterministic Reconfiguration of Flight Control Systems for Multirotor UAV Package Delivery,” [pdf] Proceedings of the Vertical Flight Society’s 77th Annual Forum, May 2021.
- Berger, T., Tischler, M. B., Hagerott, S. G., Cotting, M. C., and Gray, W. R., “Business Jet Fly-By- Wire Control Laws Handling Qualities Flight Test Assessment,” Journal of Guidance, Control, and Dynamics, Vol. 44, No. 8, August 2021.
- Walker, J., and Tischler, M. B., “Identification and Control Design of a Sub-Scale Flybarless Helicopter,” [pdf] Proceedings of the Vertical Flight Society 77th Annual Forum & Technology Display, Virtual, May 11–13, 2021.
- Tischler, M. B., “Flight Control Technology Advancements and Challenges for Future Rotorcraft 40th Alexander A. Nikolsky Honorary Lecture,” [pdf] Journal of the American Helicopter Society, Vol. 67, 2022.
- Ivler, C. M., Russell, K., Gong, A., Berger, T., and Lopez, M. J. S., “Toward a UAS Handling Qualities Specification: Development of UAS-Specific MTEs,” [pdf] Proceedings of the Vertical Flight Society’s 78th Annual Forum.
- Walter, A., McKay, M., Niemiec, R., Gandhi, F., and Berger, T., “Hover Dynamics & Flight Control of a UAM-Scale Quadcopter with Hybrid RPM & Collective Pitch Control,” [pdf] Proceedings of the Vertical Flight Society’s 78th Annual Forum Proceedings, Ft. Worth, TX, May 10–12, 2022.
- Walker, J., and Tischler, M. B., “Simulation Model Update and Optimized Control Design of a Sub-Scale Flybarless Helicopter,” [pdf] Proceedings of the Vertical Flight Society 78th Annual Forum & Technology Display, Ft. Worth, TX, May 10–12, 2022.
- Gong, A., Tischler, M. B., and Shalev-Eggert, O., “Flight Dynamics, Control, and Testing of a Coaxial Helicopter UAV with Folding Rotor Blades,” [pdf] Proceedings of the Vertical Flight Society 79th Annual Forum & Technology Display, West Palm Beach, FL, May 16–18, 2023.
- Nadell, S. J., Berger, T., DiJoseph, A., and Huang, E., “Development, Simulation, and Flight Testing of Damage Tolerant Control Laws for the ADAPT™ Winged Compound Helicopter Scaled Demonstrator,” [pdf] Proceedings of the Vertical Flight Society 79th Annual Forum & Technology Display, West Palm Beach, FL, May 16–18, 2023.
- Walter, A., Niemiec, R., Farhan, G., and Berger, T., “Forward Flight & MTE Simulation of a UAM-Scale Quadcopter with Hybrid RPM & Pitch Control,” [pdf] Proceedings of the Vertical Flight Society 79th Annual Forum & Technology Display, West Palm Beach, FL, May 16–18, 2023.