Civil Turbofan Propulsion System Integration Studies Using Powered Testing Techniques at Ara, Bedford

摘要

Details are given of powered testing techniques used in civil turbofan integration studies. Tests and rigs for the study of isolated nacelle inlet and afterbody/nozzle components, isolated complete nacelle/pylon, and installed nacelle/pylon performance are described. The techniques described have placed considerable emphasis on the need to identify the many complex aerodynamic interferences involved. The main theme relates to the use of turbine powered simulator (TPS) nacelles used on both full-span and half-span models for determination of nacelle/pylon installation and interference drag levels. A detailed description of a new Mach Simulation Tank for high accuracy TPS nacelle calibrations is included.