Auslegung Eines Counter Rotating Ultra-High-Bypass Fan Simulators fuerWindkanaluntersuchungen (Design of a Counter Rotating Ultra-High-Bypass Fan Simulator for Windtunnel Investigation)

摘要

The procedure and special aspects that had to be taken into account during thedesign of an engine simulator to be used for simulating the integration of airframes and engines with ultra high bypass ratios are described. The simulator should be able to simulate the aerodynamics and acoustics of the real engine. For this reason, the simulator was designed with a counter rotating fan. The counter rotation of the fan was generated by a reverse gearbox, similar to the real engine where a gearbox is necessary to maintain a good LP turbine efficiency.