Abstract
This paper compares the results of experimental programs conducted to determine the transonic buffet characteristics in several wind tunnels with the results of flight by various techniques on the Model F-4 airplane. Wind-tunnel tests were conducted in cooperation with NASA at Langley Research Center and at McDonnell Douglas wind tunnels. Wind-tunnel instrumentation for buffet onset included a wing tip accelerometer, wing root strain gage, wing trailing-edge pressure taps, and force data. Flight test investigation of buffet characteristics of the Model F-4 airplane was conducted under Air Force Flight Dynamics Laboratory contract. Flight test instrumentation included wing tip and pilots eat accelerometers, wing root, aileron, and stabilator strain gages, wing trailing-edge pressure taps, a boundarylayer pressure rake and wing tufts. Wing leading edge maneuvering slats were also tested in the wind tunnel and in flight in an attempt to improve the maneuvering characteristics of the airplane. Results of buffet data obtained in wind-tunnel and in flight with and without leading edge maneuvering slats are discussed.
Published Version
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