Accession Number : AD0164648

Title :   Aircraft Propulsion System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Ohain,Hans J. P. Von ; Mills,Roscoe H. ; Scolatti,Charles A.

Report Date : 15 JAN 1974

Pagination or Media Count : 8

Abstract : The invention relates to a propulsion system particularly adapted to VTOL and STOL type of aircraft. A main wing has an auxiliary wing arranged either above or below in spaced biplane relation with the space between the wings, in combination with suitable end plates, forming a rectangular propulsion duct extending spanwise on each side of a central fuselage. A gas turbine driving an air compressor has the compressed air therefrom delivered through a conduit formed in one of the wings from whence it passes to a series of injection nozzles which inject air into the duct inlet. The nozzles are housed in streamlined struts or housings extending vertically between the wings and transverse to the duct. One of the wings is provided with an adjustable trailing edge flap for varying the discharge area of the propulsive duct diffuser and the other wing is provided with a flap provided with nozzles at its leading edge and adapted to discharge over the suction surface of the flap.

Descriptors :   *Short takeoff aircraft, *Propulsion system components, *Patents, Thrust augmentation, Ducts, Nozzles, Coanda effect

Subject Categories : V/STOL
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE