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.


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    Title :

    Hummingbird program


    Additional title:

    SAE -- Paper


    Contributors:

    Conference:

    SAE Meeting ; 1964 VTOL-STOL



    Publication date :

    1964


    Size :

    10 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


    The Hummingbird Program

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