Lifting engine for VTOL aircrafts

Details Lifting engine for VTOL aircrafts Lifting engine for VTOL aircrafts

1987-02-03

1989-01-10

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Fluid sustained

244 23C, 244 122, 416223R, B64C 2900

Patent

active

047968362

ABSTRACT:
A hovering or VTOL aircraft with a propulsion unit using a fan in a shroud whose upper end is toroidally shaped and rotationally symmetrical with a convex curvature with a radius of curvature between 0.2 r.sub.f and 1 r.sub.f from a location 1.4 r.sub.f upstream of the blade plane to a location 0.2 r.sub.f downstream thereof. The blade, whose tip radius is r.sub.f has a twist at least from a range of .+-.0.25 r.sub.f around a mean radius between hub and tip to the tip such that the airflow velocity through the meridian increases outwardly from the hub of the fan toward the periphery of the fan.

REFERENCES:
patent: 2468787 (1949-05-01), Sharpe
patent: 3034747 (1962-05-01), Lent
patent: 3127093 (1964-03-01), Sudrow
patent: 3181811 (1965-05-01), Maksim, Jr.
patent: 3489374 (1970-01-01), Morcom
patent: 3614030 (1971-10-01), Moller
patent: 3630470 (1971-12-01), Elliot
patent: 3785592 (1974-01-01), Kerruish
patent: 4411598 (1983-10-01), Okada
patent: 4564337 (1986-01-01), Zimmer et al.
patent: 4569631 (1986-02-01), Gray, III

Affiliated with

Also associated with

Rating

Lifting engine for VTOL aircrafts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lifting engine for VTOL aircrafts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lifting engine for VTOL aircrafts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2104158