This paper describes a higher harmonic control (HHC) study of a four bladed hingeless rotor using a coupled flap-lag-torsional aeroelastic stability and response analysis which incorporates finite-state, time-domain aerodynamics. The rotor trim condition is determined using a coupled trim-aeroelastic analysis. Deterministic and cautious controllers based on local and global HHC models are implemented with different combinations of input parameters identified using a Kalman filter. The effects of unsteady versus quasisteady aerodynamic modeling on HHC simulations are investigated, including the effectiveness of the local and global HHC models and the advantages of different identification schemes.
Analytic simulation of higher harmonic control using a new aeroelastic model
AIAA, ASME, ASCE, AHS, and ASC, Structures, Structural Dynamics and Materials Conference ; 1989 ; Mobile, AL, United States
1989-01-01
Conference paper
No indication
English
A study of fundamental issues in higher harmonic control using aeroelastic simulation
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