Shroud geometry for unmanned aerial vehicles

Details Shroud geometry for unmanned aerial vehicles Shroud geometry for unmanned aerial vehicles

1991-08-13

1992-09-29

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and fluid sustained

244 23C, 244 34A, B64C 3906

Patent

active

051508575

ABSTRACT:
An unmanned aerial vehicle having a toroidal fuselage that surrounds a pair of coaxial, multi-bladed, counter-rotating rotors. The toroidal fuselage has an airfoil profile that is optimized to provide high hover efficiency and produce a pressure distribution that provide high lift forces. The airfoil profile is further optimized to counteract the undesirable nose-up pitching moments experienced by ducted rotary-type UAVs in forward translational flight.

REFERENCES:
patent: 2935275 (1960-05-01), Grayson
patent: 2966318 (1960-12-01), Chodar
patent: 3002709 (1961-10-01), Cochran
patent: 3103327 (1963-09-01), Parry
patent: 3395876 (1968-08-01), Green
patent: 3477168 (1969-11-01), Trodgler
patent: 4163535 (1979-08-01), Austin
patent: 4196877 (1980-04-01), Mutrux
patent: 5035377 (1991-07-01), Buchelt

Affiliated with

Also associated with

Rating

Shroud geometry for unmanned aerial vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shroud geometry for unmanned aerial vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shroud geometry for unmanned aerial vehicles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1964230