국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	ROBUST FLUTTER MARGIN ANALYSIS THAT INCORPORATES FLIGHT DATA
저자	Rick Lind and Martin J. Brenner
Keyword	Aeroelasticity; Flight data analysis; Flutter; Robust stability; Structural dynamics;Structured singular value
URL	http://www.dfrc.nasa.gov/DTRS/1998/PDF/H-2209.pdf
보고서번호	NASA-TP-1998-206543
발행년도	1998
출처	NASA Dryden Flight Research Center
ABSTRACT	An approach for computing worst-case flutter margins has been formulated in a robust stability framework. Uncertainty operators are included with a linear model to describe modeling errors and flight variations. The structured singular value, mu, computes a stability margin that directly accounts for these uncertainties. This approach introduces a new method of computing flutter margins and an associated new parameter for describing these margins. The mu margins are robust margins that indicate worst-case stability estimates with respect to the defined uncertainty. Worst-case flutter margins are computed for the F/A-18 Systems Research Aircraft using uncertainty sets generated by flight data analysis. The robust margins demonstrate flight conditions for flutter may lie closer to the flight envelope than previously estimated by p-k analysis.