Performance of ducted fans, suitable for lifting and propelling VTOL/S TOL aircraft is investigated; variations of duct angle, power required, and pitching moment obtained for force balanced conditions simulating level, unaccelerated, transition flight from 0 to 140 knots; tests made to determine effectiveness of movable vanes in duct.
Wind-tunnel investigation of 4-foot-diameter ducted fan mounted on tip of Semispan wing
NASA -- Tech Note
1961
31 pages
Aufsatz (Zeitschrift)
Englisch
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