External Flow Effects in the Engine/Airframe Integration Testing Technique: A New Thrust/Drag Bookkeeping Approach at the German-Dutch Wind Tunnels

The integration of the engine with the airframe is investigated in the German-Dutch Wind tunnels (DNW) using special scale engines called Turbofan Powered Simulators (TPS). The bookkeeping of thrust and drag must be clear. The TPS thrust is determined under static conditions in a calibration facility, and then subtracted in the wind tunnel test...