Modeling and Control of Unsteady Aerodynamic Forces and Moments on a Generic UCAV Platform
Abstract
An experiment is proposed to investigate the ability of active flow control effectors to improve the roll moment characteristics of a generic UCAS aircraft. Wind tunnel experiments will be done to measure the dynamic roll characteristics of the UCAS model experiencing roll disturbances, and modern system identification methods will be used to develop low-dimensional models of the dynamic roll response to external disturbances. The disturbance model and the response-to-actuation model will be combined into a feedforward/feedback closed-loop controller to improve the roll dynamics of the vehicle. Surface pressure sensors will be used as a surrogate feedback signal for the roll moment of the UCAS model. Smoke wire flow visualization and PIV measurements of the dynamic flow field behavior around the UCAS will be obtained to connect the unsteady fluid dynamic behavior with the vehicle dynamics. The ability of the closed-loop control system to reject randomized roll disturbances forced by the roll control mechanism will be investigated and assessed by comparison with the performance predicted using the closed-loop control model.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141612622
Entities
People
- David R. Williams
Organizations
- Illinois Institute of Technology
- Office of Naval Research
- United States Navy