Application of the finite-state arbitrary-motion aerodynamics to rotor blade aeroelastic response and stability in hover and forward flightThe primary objective of this paper is to illustrate the influence of finite-state arbitrary-motion time-domain aerodynamics on rotor blade aeroelastic stability in hover and forward flight. The essential ingredients of the generalized Greenberg type time-domain unsteady aerodynamics are presented and incorporated in a coupled nonlinear flap-lag analysis. Aeroelastic stability boundaries for both hover and forward flight are obtained using both arbitrary-motion time-domain aerodynamics and quasi-steady aerodynamics. The sensitivity of flap-lag aeroelastic stability boundaries to time-domain arbitrary-motion unsteady aerodynamics is evaluated by comparing the two sets of results for various blade configurations and flight conditions.
Document ID
19850048229
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dinyavari, M. A. H. (Hughes Helicopters, Inc., Culver City; California, University Los Angeles, CA, United States)
Friedmann, P. P. (California, University Los Angeles, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 85-0763
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference