Abstract
The aerodynamic performance of a typical transport aircraft semispan model with a stub-wing-mounted turbopowered simulator was experimentally investigated. The entire model was metric including the engine simulator. Various nacelle positions and jet velocity ratios were studied for two wing configurations. Results of force measurements show that there is an optimum nacelle position dependent on the wing configuration. Overthe-wing engines induce lift gains and higher maximum lift-drag ratios than conventionally mounted engines. Static pressure measurements on the wing indicate that mainly the upper side of the wing is influenced by overthe-wing engine simulation and that not only the jet but also the intake flow is important for interference effects.
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