Flutter Model Technology

Abstract : Wind tunnel testing of dynamically scaled models plays a key role in assuring that new or modified aircraft will be free of flutter within their flight envelopes. Dynamically scaled models are also widely used in research studies such as active control of aeroelastic response, buffet alleviation, and validation of theoretical or computational methods. This paper summarizes many of the critical design consideration involved with designing and fabricating flutter model hardware once the basic requirements have been determined. Topics discussed include: spar design, stress skin construction, hinged control surfaces, instrumentation, calibration, load testing, and a case study for supersonic F-22 flutter model components.