Jahnke, Craig C. and Culick, Fred E. C. (1990) Application of dynamical systems theory to the high angle of attack dynamics of the F-14. AIAA Papers, AIAA-90-0221 . American Institute of Aeronautics and Astronautics . http://resolver.caltech.edu/CaltechAUTHORS:20101130-140634171
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Dynamical systems theory has been used to study the nonlinear dynamics of the F-14. An eight degree of freedom model that does not include the control system present in operational F-14's has been analyzed. The aerodynamic model, supplied by NASA, includes nonlinearities as functions of the angles of attack and sideslip, the rotation rate, and the elevator deflection. A continuation method has been used to calculate the steady states of the F-14 as continuous functions of the control surface deflections. Bifurcations of these steady states have been used to predict the onset of wing rock, spiral divergence, and jump phenomena which cause the aircraft to enter a spin. A simple feedback control system was designed to eliminate the wing rock and spiral divergence instabilities. The predictions were verified with numerical simulations.
|Item Type:||Report or Paper (Report)|
|Additional Information:||© 1990 by Craig C. Jahnke. Published by the American Institute of Aeronautics and Astronautics, Inc. with permission. This work was partly supported by CALTECH funds and partly supported by a grant from the National Aeronautics and Space Administration, Ames Dryden Flight Research Center. The F-14 aerodynamic model was supplied by Joe Gera, Acting Assistant Branch Chief, Vehicle Technical Branch, Ames Dryden Flight Research Center.|
|Group:||Guggenheim Jet Propulsion Center, GALCIT|
|Other Numbering System:|
|Official Citation:||Application of dynamical systems theory to the high angle of attack dynamics of the F-14 JAHNKE, CRAIG C., California Institute of Technology, Pasadena; CULICK, FRED E. C., California Institute of Technology, Pasadena AIAA-1990-221 Aerospace Sciences Meeting, 28th, Reno, NV, Jan 8-11, 1990. 20 p. Research supported by NASA and California Institute of Technology|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||03 Dec 2010 23:48|
|Last Modified:||22 Sep 2016 21:52|
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