The paper describes the free-jet test facilities available at NGTE for testing complete aircraft propulsion systems, that is the air intake, engine and exhaust system, at conditions reproducing those encountered during flight at altitude. Supersonic and subsonic flight conditions can be simulated, both steady state and transient, the latter aspect including the effects of time-variant changes in aircraft flight speed, attitude and engine power. The scope of free- jet testing is reviewed and compared with what can be achieved using direct-connect facilities. The paper concludes with a description of subsonic free-jet tests made under the extreme conditions encountered in an icing cloud to determine the effectiveness of intake and engine anti-icing equipment and the ability of the powerplant to operate satisfactorily following the shedding of ice that may have accreted on the inlet duct surfaces. (Wassmann)
Free-jet testing of powerplants for aircraft and missiles
Freistrahlerprobung von Triebwerken fuer Flugzeuge und Raketen
1981
24 Seiten, 21 Bilder, 9 Quellen
Aufsatz (Konferenz)
Englisch
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