A program was conducted to determine the feasibility of the augmented jet ejector concept for attaining a VTOL capability for aircraft. During the flight test program, the actual vertical thrust realized was only about 93 percent of that predicted, and consequently the aircraft, the XV-4A, had a marginal lift capability. This marginal lift capability severely limited the capability to conduct quantitative data gathering during the flight test program. The report presents the limited quantitative results obtained and a brief summary of the aircraft design, systems, flight test program, VTOL lift improvement program, and small-scale and full-scale wind tunnel programs. The feasibility of the augmented jet ejector concept was demonstrated; however, this concept is not considered to be competitive with other concepts for attaining a VTOL capability. (Author)


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    Title :

    XV-4a VTOL Research Aircraft Program


    Contributors:
    R. Nicholson (author) / R. B. Lowry (author)

    Publication date :

    1966


    Size :

    2 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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