An experimental modal analysis was performed on PATHFINDER, a 450-lb, 100-ft wing span, flying-wing-design aircraft powered by solar/electric motors. The aircraft was softly suspended and then excited using random input from a long-stroke shaker. Modal data was taken from 92 measurement locations on the aircraft using newly designed, lightweight, tri-axial accelerometers. A conventional PC-based data acquisition system provided data handling. Modal parameters were calculated, and animated mode shapes were produced using SMS STARStruct(trademark) Modal Analysis System software. The modal parameters will be used for validation of finite element models, optimum placement of onboard accelerometers during flight testing, and vibration isolation design of sensor platforms.
Modal analysis of PATHFINDER unmanned air vehicle
1994
9 pages
Report
No indication
English
Pathfinder Raven Small Unmanned Aerial Vehicle
NTIS | 2004
|NTRS | 1988
|British Library Online Contents | 1997
|NTRS | 1998
|