Fan lift-cruise v/stol aircraft

Details Fan lift-cruise v/stol aircraft Fan lift-cruise v/stol aircraft

1976-03-25

1977-05-10

Blix, Trygve M.

Aeronautics and astronautics

Aircraft structure

Airfoil construction

244 125, B64C 1504

Patent

active

040224058

ABSTRACT:
An aircraft for making vertical and short field takeoffs is powered by a ass 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.

REFERENCES:
patent: 3035791 (1962-05-01), Klapproth
patent: 3179353 (1965-04-01), Peterson
patent: 3258206 (1966-06-01), Simonson
patent: 3335976 (1967-08-01), Kappus
patent: 3388878 (1968-06-01), Peterson et al.

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