Identification of flexible aircraft from flight dataThis paper describes a frequency-domain method for the estimation of the aeroelastic equations of motion of an aircraft using discrete sinusoidal inputs to the control surface actuators. The theory of estimation of the signal inputs and outputs is described as well as the method of obtaining accurate transfer functions from the resulting Bode plots. Methods of quantifying the accuracy of the results from more than one control input are discussed along with ways to obtain state-space and reduced-order models from the transfer function estimates. Presented is a summary of the results obtained in using the technique to develop a model of the USAF Total In-Flight Simulator (TIFS) aircraft which includes five symmetrical elastic modes of motion of the aircraft.
Document ID
19800061751
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Eulrich, B. J. (Calspan Advanced Technology Center Buffalo, NY, United States)
Rynaski, E. G. (Calspan Advanced Technology Center Buffalo, N.Y., United States)