LOW DRAG SURFACE
Assignee
ROLLS-ROYCE LIMITED, A BRITISH COMPANY
Filed
Sep 20, 1984
Granted
Sep 11, 1990
Location
DERBY GB
Abstract
A low drag surface comprises at its upstream edge, an intermittent linear vortex producing means which extends transverse to the flow over the surface and produces a succession of rolling vortices extending transverse to said flow. The vortices move across the surface and reduce drag in the manner of roller bearings. In preferred embodiments the vortex producing means is mechanical, in the form of an oscillating part or fluid dynamic, in the form of a nozzle arrangement.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 7, 1985
Rescinded
Jan 19, 1990
Duration
4 years, 10 months
Inventor
- 1JOHN F. COPLIN
Record Details
- Patent number
- US 4955565
- Application
- 06662983
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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