Identification and Correlation of the F-4E Stall/Post-Stall Aerodynamic Stability and Control Characteristics from Existing Test Data

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Report Number: AFFDL TR 73-125
Author(s): Eulrich, Bernard J., Weingarten, Norman C.
Corporate Author(s): Calspan Corporation
Laboratory: Air Force Flight Dynamics Laboratory
Date of Publication: 1973-11
Pages: 334
Contract: F33615-72-C-1248
DoD Project: 8219
DoD Task: 821902
Identifier: AD0779928

The report documents the results of a study performed for the United States Air Force Flight Dynamics Laboratory to identify the high angle of attack post stall aerodynamic stability and control characteristics of the F-4 aircraft from existing full scale and radio-controlled drop model test data and to correlate these results with similar characteristics obtained from wind tunnel tests. A parameter identification procedure was set up to extract these nonlinear characteristics from flight test records using a nonlinear iterated Kalman filter/fixed-point smoother algorithm and a least square equation error method. Model form is established from wind tunnel data by representing the aerodynamic coefficients by Taylor's series expansions for selected ranges of angle of attack.

Provenance: AFRL/VACA

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