A unified approach was derived for predicting buffet response of fighter aircraft empennage operating in high angle of attack maneuvering conditions. Since the advent of high angle of attack flight using controlled vortex flows, incidences of severe structural stress, and in some cases, damages have resulted. This was pronounced on twin tailed aircraft, including McDonnell's F-15 and F/A-18 aircraft which required structural beef-ups to their empennage. Two concepts are shown for predicting buffet response of empennage. The first approach uses elastically scaled models in wind tunnel tests to provide full scale prediction. The second approach is based on calculations using measured pressure data from wind tunnel tests. The latter method is more versatile. Detailed applications are shown for the F/A-18 empennage, while other applications at McDonnell are noted. This work covers many years and is believed to be a mature approach.
Unified Approach to Buffet Response of Fighter Aircraft Empennage
1990
18 pages
Report
Keine Angabe
Englisch
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