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Testing to Validate Adaptive Real-Time Drag Optimization Control for Adaptive Wing Technologies to Take Place This Summer
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Testing to Validate Adaptive Real-Time Drag Optimization Control for Adaptive Wing Technologies to Take Place This Summer

An upcoming wind tunnel test of a highly-flexible wing will be conducted at the University of Washington in the July-August timeframe to validate Ames-developed adaptive real-time drag-optimization control for advanced adaptive-wing technologies for future transport aircraft. The wind tunnel model employs Ames-developed Variable Camber Continuous Trailing Edge Flap (VCCTEF) technology for drag reduction. The VCCTEF is designed to be actively controlled by electric drive actuators. During the wind tunnel test, the real-time drag-optimization control algorithm will command the actuators to change the VCCTEF in a strategic manner so as to provide aerodynamic information for on-line machine learning model identification technique based on the Recursive Least-Squares (RLS) method. The RLS algorithm will identify a surrogate model of the aerodynamic characteristics of the model. This model is then used in an on-line optimization algorithm to compute the optimal configuration of the VCCTEF to minimize drag.

BACKGROUND: The Advanced Air Transport Technology (AATT) project conducts research and development of advanced transport aircraft technologies for improved fuel efficiency and reduced noise and emissions. Under this project, NASA Ames is conducting research and development of performance of adaptive aeroelastic wing-shaping control technology for future flexible high aspect-ratio wing-transport aircraft. This technology addresses drag optimization and aeroservoelastic multi-objective flight control, including flutter suppression and load alleviation control. The project develops multidisciplinary modeling and simulation capabilities in order to support this technology development. Current aircraft, such as the Boeing 787 and Airbus A350, have already employed some limited capabilities of their own adaptive aeroelastic wing-shaping control technologies. This Ames-developed technology can further contribute to the goals of improved fuel efficiency and safe operation of current and future passenger aircraft with flexible high aspect-ratio wing design.

NASA PROGRAM FUNDING: Advanced Air Vehicles Program (AAVP), Advanced Air Transport Technology (AATT) project, Aeronautics Research Mission Directorate (ARMD)

TEAM: Daniel Chaparro, Nhan Nguyen, and Eric Ting

POINT OF CONTACT: Nhan Nguyen, nhan.t.nguyen@nasa.gov

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