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NASA's Dryden Flight Research Center, Edwards, California, is using a modified McDonnell-Douglas F-15B aircraft as a testbed for a variety of transonic flight experiments.
The twin-engine, twin-tail aircraft is shown carrying a Dryden-designed Flight Test Fixture (FTF) upon which aerodynamic experiments are mounted. The F-15B flew several flights recently in support of an experiment to determine the precise location of of sonic shock wave development as air passes over an airfoil.