Aircraft wingtip vorticity redistribution apparatus

Details Aircraft wingtip vorticity redistribution apparatus Aircraft wingtip vorticity redistribution apparatus

1989-12-29

1992-03-31

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244206, B64C 2302

Patent

active

051000857

ABSTRACT:
A rotor is mounted to an aircraft wing to recover induced drag associated with a wingtip vortex. When the rotor is placed in the vortex stream, the transverse component of relative wind encountered at selected increasing spanwise locations along the blade changes sign due to an increasing transverse component of blade velocity and decreasing transverse component of vortex velocity with increasing distance from the axis of rotation. In order to maximize induced drag recovery, the blade is twisted in a spanwise direction so that the inner portion of the blade drives the blade, while the radially outward portion acts as a propeller to resist rotation. The induced drag recovery is in the form of thrust generated by the rotor blade.

REFERENCES:
patent: 1846562 (1932-02-01), Longo et al.
patent: 2477461 (1949-07-01), Lee
patent: 2485218 (1949-10-01), Shaw
patent: 2927748 (1960-03-01), Griswold II
patent: 3596854 (1971-08-01), Haney, Jr.
patent: 3934844 (1976-01-01), Reighart II
patent: 3984070 (1976-10-01), Patterson, Jr.
patent: 3997132 (1976-12-01), Erwin
patent: 4045144 (1977-08-01), Loth
patent: 4533101 (1985-08-01), Patterson, Jr.
patent: 4917332 (1990-04-01), Patterson, Jr.
"Turbines Recover Power by Dissipating Induced Drag from Wingtip Vortices", Aviation Week & Space Technology, Sep. 1, 1986, p. 199.

Affiliated with

Also associated with

Rating

Aircraft wingtip vorticity redistribution apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aircraft wingtip vorticity redistribution apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aircraft wingtip vorticity redistribution apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2253625