Background of Army's XV-4A Hummingbird Program and development of all-jet VTOL research aircraft by Lockheed Aircraft Corp; aircraft is mid-wing monoplane, powered by 2 Pratt and Whitney JT-12 turbojet engines; maximum vertical takeoff weight is 7200 lb; maximum design level flight speed is Mach 0.68; structure employs aluminum alloys in most areas, with stainless steel, or titanium, in hot areas; 17% of structure is titanium; aircraft uses augmented, deflected exhaust from its 2 turbojet engines for vertical thrust; basic concept, design of VTOL propulsion system, VTOL control characteristics, and overall performance.
Hummingbird program
SAE -- Paper
SAE Meeting ; 1964 VTOL-STOL
1964
10 pages
Conference paper
English
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