Prediction of jump phenomena in rotationally-coupled maneuvers of aircraft, including nonlinear aerodynamic effectsAn analytical method has been developed for predicting critical control inputs for which nonlinear rotational coupling may cause sudden jumps in aircraft response. The analysis includes the effect of aerodynamics which are nonlinear in angle of attack. The method involves the simultaneous solution of two polynomials in roll rate, whose coefficients are functions of angle of attack and the control inputs. Results obtained using this procedure are compared with calculated time histories to verify the validity of the method for predicting jump-like instabilities.
Document ID
19770060307
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Young, J. W. (NASA Langley Research Center Hampton, VA, United States)
Schy, A. A. (NASA Langley Research Center Hampton, VA, United States)
Johnson, K. G. (NASA Langley Research Center Hampton, Va., United States)