Accession Number : ADD004080

Title :   Fan Lift-Cruise V/STOL Aircraft.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Peterson,John M

Report Date : 10 May 1977

Pagination or Media Count : 6

Abstract : An aircraft for making vertical and short field takeoffs is powered by a bypass turbofan engine having a core turbojet and a bypass fan. For vertical takeoffs, the efflux from the bypass fan is deflected downward to create lift. Exhaust from the core turbojet is ducted to turbine driven lifting fans at remote locations to create supplemental lifting forces which also provide aircraft control and stability. For cruise, the bypass fan efflux is discharged aft until sufficient forward airspeed is attained that exhaust gas flow to the lifting fans may be shut off, and exhaust gas flow may also be discharged aft. (Author)

Descriptors :   *Patents, *Vertical takeoff aircraft, *Lift fans, Short takeoff aircraft, Turbojet engines, Turbofan engines, Flow fields, Discharge, Exhaust gases, Thrust vector control systems

Subject Categories : V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE