680286ARP1420CotterH. N.March 1978May 1968.Recommended Practice“Gas Turbine Engine Inlet Flow Distortion Guidelines“Integration of Inlet and Engine - An Engine Man’s Point of View” SAE Paper No.” Society of Automotive Engineers Aerospace
适用范围
AIR1419 “Inlet Total Pressure Distortion Considerations for Gas Turbine Engines” documentsengineering information for use as reference material and for guidance. Inlet total-pressure distortionand other forms of flow distortion that can influence inlet/engine compatibility require examination toestablish their effect on engine stability and performance. This report centers on inlet-generated totalpressuredistortion measured at the Aerodynamic Interface Plane (AIP), not because this isnecessarily the sole concern, but because it has been given sufficient attention in the aircraft andengine communities to produce generally accepted engineering practices for dealing with it. Thereport does not address procedures for dealing with performance destabilizing influences other thanthose due to total-pressure distortion, or with the effects of any distortion on aeroelastic stability. Thepropulsion system designer must be careful to assure that, throughout the development process, otherforms of inlet flow distortion, which can have just as serious effects on system stability andperformance, have been effectively addressed.The report deals with spatial total-pressure distortion, as defined by an array of high-response totalpressureprobes. Time-variant total-pressure distortion, synthesized from statistical data, can provideuseful information. However, the consensus of SAE S-16 is that such techniques are not developedsufficiently to permit general guidelines to be formulated.