Plain inlets and inlets with scoop-type doors were tested in wind tunnel using Ames Lift Engine Pod containing five YJ85 engines to determine inlet/door performance characteristics during lift-engine operation and to establish engine start and acceleration characteristics during transition; overall inlet pressure distortion levels were lower than nominal acceptable level of 10%; acceptable inlet total pressure recoveries were achieved, and improvement in engine windmilling characteristics was observed with inlet doors; feasibility of windmill starting of lift engines having inlet doors at landing transition speeds between 200 and 240 knots was shown.
Experimental investigation of VTOL lift-engine inlet
J Aircraft
Journal of Aircraft ; 4 , n 2
1967
8 pages
Aufsatz (Zeitschrift)
Englisch
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