Inlet Total-Pressure-Distortion Considerations for Gas-Turbine Engines
standard by SAE International, 11/20/2017
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SAE AIR1419C contains engineering information for use as reference material and for guidance. Inlet total-pressure distortion and other forms of flow distortion that can influence inlet/engine compatibility require examination to establish the effect on engine stability and performance. This report centers on inlet-generated total-pressure distortion measured at the Aerodynamic Interface Plane (AIP), not because this is necessarily the sole concern, but because it has been given sufficient attention in the aircraft and engine communities to produce generally accepted engineering practices for dealing with it. The report does not address procedures for dealing with performance destabilizing influences other than those due to total-pressure distortion, or with the effects of any distortion on aeroelastic stability. The propulsion system designer must be careful to assure that, throughout the development process, other forms of inlet flow distortion, which can have just as serious effects on system stability and performance, have been effectively addressed.
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