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Summary
• Technical Group Lead of Advanced Control and Evolvable Systems Group in the Intelligent System Division at NASA Ames Research Center
• Senior research scientist with 31 years of aerospace engineering experience
• Ph.D. degree in Mechanical Engineering, M.S. degree in Mechanical Engineering, B.S. degree in Mathematics, and B.S. degree in Mechanical Engineering
• 194 publications and text book "Model-Reference Adaptive Control - a Primer" in print
• Research experience includes advanced control theory (adaptive, optimal, distributed-parameter systems), flight dynamics and control, flow control, aeroelasticity, structural dynamics, aerodynamics, and aircraft performance
• Four U.S. patents and two patents in pending
• Chair of AIAA Intelligent Systems Technical Committee (2015-2017)
• Adjunct Professor of Mechanical Engineering Department at Santa Clara University (2006-present) teaching graduate courses in Adaptive Control, Aircraft Flight Dynamics and Performance, Aeroelasticity, and Advanced Dynamics
• Consultant for Kassatly Intellectual Property Law Office (2000-2005)
• AIAA Associate Fellow

U.S. Patents
• Four U.S. patents as first inventor, two patents in pending, and 15 NASA invention disclosures
• "Aeroelastic Wing Shaping Using Distributed Propulsion"
• "Control Systems with Normalized and Covariance Adaptation by Optimal Control Modification"
• "Variable Camber Continuous Aerodynamic Control Surfaces and Methods for Active Wing Shaping Control"
• "Blading System and Method for Controlling Structural Vibrations"
• "Variable Camber Continuous Aerodynamic Control Surfaces and Methods for Active Wing Shaping Control" continuation in pending
• "A Real-Time Drag Optimization Control Method for Adaptive Reconfiguration of Flexible Wing Aircraft with Distributed Flight Control Surfaces" in pending

Honors and Awards
• 54 NASA career awards
• NASA Exceptional Scientific Achievement Medal (2012)
• NASA Exceptional Achievement Medal (1997)
• Two NASA Ames Honor Awards for Excellence in Engineer Category (2012 and 1999)
• Three NASA Patent Awards
• Ten NASA Ames Technology Transfer Awards
• Six NASA Group Achievement Medal
• NASA Ames Outstanding Achievement (1997)
• AIAA Intelligent Systems Technical Committee Distinguished Service Award (2012)
• AIAA Distinguished Service Award as Chair of Intelligent Systems Technical Committee (2017)
• Santa Clara University Adjunct Lecturer of the Year Award (2011)
• Best Paper Award AIAA Infotech@Aerospace Conference (2009)
• Top-Ten-Best-Paper Award AIAA Guidance, Navigation, and Control Conference (2004)

Technical Leadership
• Technical Group Lead of Advanced Control and Evolvable Systems (ACES) group in the Intelligent Systems Division (current) - Direct and provide technical leadership to a 21-person research group with 13 PhD and 8 MS researchers to conduct applied research in advanced GNC, flight dynamics and simulations, and aircraft MDAO.
• Technical Lead of Performance Adaptive Aeroelastic Wing Research (current) - Lead a team of 16 researchers with a $3.5 million research budget to conduct multidisciplinary design analysis and optimization research in adaptive aeroelastic wing shaping control for flexible wing transport aircraft under the NASA Advanced Air Transport Technology Project
• Project Scientist of NASA Integrated Resilient Aircraft Control (IRAC) Project (2007-2010) - Served as NASA ARMD (Aeronautics Research Mission Directorate) Project Scientist for IRAC Project responsible for establishing research portfolios at NASA Ames, Armstrong, Glenn, and Langley

- In charge of the technical execution plan of IRAC project with $21 million annual budget and 90 NASA employees and contractors

- Advanced adaptive flight control technologies for aviation safety by managing 24 funded research projects at universities and companies competitively selected via NASA Research Announcement (NRA) opportunities

• Deputy Principal Investigator of NASA IRAC Project (2005-2006) - Served as Deputy Principal Investigator for IRAC Project responsible for developing resilient flight control and modeling research portfolio, and led the research planning at NASA Headquarters to develop technical plan for the integrated airframe modeling and simulations research area
• Associate Technical Lead of NASA Fixed Wing Project (2012-2014) - Served as Associate Technical Lead for the Aerodynamic Efficiency sub-project under the NASA Fixed Wing Project to develop research portfolio in multidisciplinary technical capabilities to advanced adaptive wing technology for transport aircraft and establish research collaboration with aircraft industry via NRA opportunities
• Subject Matter Expert (SME) in GNC at NASA Ames (2012-2013) - Selected by Director of NASA Ames Aeronautics Directorate as SME in GNC to represent NASA Ames in the planning of NASA Fundamental Aeronautics Program and NASA Aeronautics Research Institute (NARI)
• Project Lead of Damage Adaptive Control System (DACS) Project (2004-2006) - Led research activities at NASA Ames to conduct multidisciplinary research in collaboration with NASA Langley to develop flight dynamic modeling of damaged aircraft and adaptive flight control for damaged aircraft recovery
• Integrated Systems Test Manager of NFAC (National Full-Scale Aerodynamic Complex) Fan Drive Project (1997-1999) - Led a 10-person engineering team to conduct structural dynamic and aerodynamic measurements and engineering analysis to assess structural integrity of the NFAC 40-By-80-By120-Foot Wind Tunnel fan drive system

Research Contributions
• Develop innovative aircraft flight control concepts:
- Adaptive aeroelastic wing shaping control concept for flexible aircraft and the Variable Camber Continuous Trailing Edge Flap (VCCTEF) system for aircraft drag reduction in 2010 - This multidisciplinary research led to on-going collaboration with Boeing from 2010 to present to mature performance adaptive aeroelastic wing technology for future transport aircraft. Wind tunnel experiments and CFD validation have confirmed the potential drag reduction of as much as 6%
• Developed MDAO concept for adaptive aeroelastic wing shaping control for drag reduction (2010) which produces novel aerodynamically efficient elastic wing shapes and a novel control actuator called variable camber continuous trailing flap (VCCTEF). Work has been published by Aviation Week & Space Technology in 2011, 2012, and 2013.
• Developed new adaptive control method that combines adaptive control with optimal control called Optimal Control Modification (OCM) (2008). The method was validated in NASA Ames motion-based Advanced Concept Flight Simulator (ACFS) with eight NASA test pilots (2009) and successfully flown on NASA F/A-18A aircraft at NASA Armstrong (2010-2011). The method has been extended to a multi-objective optimal control framework (2012-present).
• Developed new stability analysis method for adaptive control using time-window analysis called Bounded Linear Stability Analysis (BLSA) (2007-2010).
• Developed hybrid adaptive control method that combined adaptive control and least-squares parameter estimation (2006) to improve robustness by reducing high-gain effect of MRAC and improve tracking by least-squares method.
• Conducted flight dynamic modeling of damaged GTM (2005) with damaged wings, horizontal tails, and vertical tail, and disseminated GTM flight dynamic model for flight control research.
• Conducted flight-propulsion control investigation of GTM with vertical tail damage (2008).
• Developed distributed-parameter optimal flow control method using least-squares parameter estimation method and adjoint-based optimization for a hyperbolic conservation-law model of 1-D unsteady flow through stators in a low-speed axial-flow compressor (2004-2005).
• Developed 1-D unsteady Euler CFD code using mixed implicit-explicit wave-splitting scheme to model mean flow in NASA Ames 11-Ft Transonic Wind Tunnel (TWT) and distributed-parameter model-predictive optimal control method for Mach number regulation in the presence of test section model blockage (2003-2004).
• Conducted 2-D cascade potential flow modeling for aerodynamic analysis of wind tunnel performance (2002).
• Conducted aerodynamic design optimization of rotor blades (1996-1998) to obtain improved aerodynamic performance of NASA Ames 11-Ft TWT. Developed turbomachinery code for analysis and design of axial-flow compressors and contributed to Boeing Commercial Airplanes streamline curvature turbomachinery aerodynamic analysis code HTO-300.
• Developed structural vibration suppression control method for the 11-Ft TWT compressor rotor blades (1992).
• Conducted finite-element structural dynamic modeling and experimental investigation of vibration of composite rotor blades and wing structures in NASA Ames wind tunnels (1986-1992).
• Conducted wind tunnel tests and experimental facility/applied aerodynamic research at NASA Ames 11-Ft Transonic Wind Tunnel, 12-Ft Pressurized Wind Tunnel, 14-Ft Wind Tunnel, and 40-By-80-By-120-Ft National Full-Scale Aerodynamic Complex (1986-1999).

Seminars
• Invited talk to NASA Engineering Safety Center (NESC) GNC committee meeting at NASA Ames "Flight Control of Flexible Aircraft," January 25, 2017.
• Invited keynote by German Aerospace Center DLR at the inauguration of Robotics and Mechatronic Center in Oberpfaffenhofen, Germany "Progress in NASA Flight Control Research for Improved Safety and Performance of Next-Generation Aircraft," April 15, 2016.
• Seminar at TU Delft in the Netherlands "Progress in NASA Flight Control Research for Improved Safety and Performance of Next-Generation Aircraft," April 18, 2016.
• NASA Aerospace Modeling and Simulations Seminar "A Framework for Adaptive Aeroelastic Wing Shaping Control," April 22, 2014.
• NASA Aeronautics Technical Seminar "NASA Adaptive Control Research - Progress and Challenges," April 29, 2010.
• Santa Clara University Seminar "Adaptive Control Research - Progress and Challenges for NASA Aviation Safety Program," February 11, 2009.

Selected Publications
• Nguyen, N., “Elastically Shaped Future Air Vehicle Concept,” NASA Innovation Fund Award 2010 Report, October 2010, submitted to NASA Innovative Partnerships Program.
• Nguyen, N., Trinh, K., Reynolds, K., Kless, J., Aftosmis, M., Urnes, J., and Ippolito, C., “Elastically Shaped Wing Optimization and Aircraft Concept for Improved Cruise Efficiency,” AIAA Aerospace Sciences Meeting, AIAA-2013-0141, January 2013.
• Nguyen, N., “Least-Squares Model Reference Adaptive Control with Chebyshev Orthogonal Polynomial Approximation,” AIAA Journal of Aerospace Information Systems, Vol. 10, No. 6, pp. 268-286, June 2013.
• Nguyen, N., “Optimal Control Modification for Robust Adaptive Control with Large Adaptive Gain,” Systems & Control Letters, 61 (2012) pp. 485-494.
• Nguyen, N., “Active Wing Shape Control Technology for Aircraft,” NASA Tech Briefs Magazine, Vol. 34, No. 4, April 2010.
• Nguyen, N., “One-Dimensional Unsteady Periodic Flow Model with Boundary Conditions Constrained by Differential Equations,” ASME Journal of Fluids Engineering, Vol. 131, No., 6, 061201, June 2009.
• Nguyen, N., “Adjoint Optimization of One-Dimensional Hyperbolic Equations with Constrained Periodic Boundary Conditions,” Elsevier Journal of Computer Methods in Applied Mechanics and Engineering, 197 (2008) pp. 4683–4691, October 2008.
• Nguyen, N., Bright, M., Culley, D., “Adaptive Feedback Optimal Control of Flow Separation on Stators by Air Injection,” AIAA Journal, Vol. 45, No. 6, June 2007.
• Nguyen, N., Ardema, M., “Predictive Optimal Control of a Hyperbolic Distributed Model for a Wind Tunnel,” AIAA Journal of Guidance, Control, and Dynamics, Vol. 29, No. 3, June 2006.
• Nguyen, N., Ting, E., Nguyen, D., Trinh, K., “Flutter Analysis of Mission-Adaptive Wing with Variable Camber Continuous Trailing Edge Flap,” AIAA Structural Dynamics Conference, AIAA-2014-0839, January 2014.
• Nguyen, N., “Multi-Objective Optimal Control Modification Adaptive Control Method for Systems with Input and Unmatched Uncertainties,” AIAA Guidance, Navigation, and Control Conference, AIAA-2014-0454, January 2014.
• Nguyen, N., “Bi-Objective Optimal Control Modification Adaptive Law for Unmatched Uncertain Systems,” AIAA Guidance, Navigation, and Control Conference, AIAA-2013-4613, August 2013.
• Nguyen, N., Krishnakumar, K., and Boskovic, J., "An Optimal Control Modification to Model Reference Adaptive Control for Fast Adaptation," AIAA Guidance, Navigation, and Control Conference, AIAA-2008-7283, August 2008.
• Nguyen, N., Krishnakumar, K., Kaneshige, J., and Nespeca, P., “Dynamics and Adaptive Control for Stability Recovery of Damaged Asymmetric Aircraft,” AIAA Guidance, Navigation, and Control Conference, AIAA-2006-6049, August 2006.
• Nguyen, N., Bright, M., and Culley, D., “Feedback Interior Pointwise Control of Euler Equations for Flow Separation Control in Compressors,” AIAA Flow Control Conference, AIAA-2006-3020, June 2006.
• Nguyen, N., “Adjoint-Based Optimization of Hyperbolic Equations with Nonlinear Differential Equation Constraints on Two-Point Boundary Conditions,” 7th World Congress on Computational Mechanics, July 2006.


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