AIRFOIL SECTION FOR A ROTOR BLADE OF A ROTORCRAFT
Assignee
UNITED TECHNOLOGIES CORPORATION
Filed
Apr 18, 1983
Granted
Feb 11, 1986
Location
TRUMBULL CT US
Abstract
An airfoil shaped cross section 36 for the rotor blade 14 is disclosed. Various construction details which improve the aerodynamic and drag performance of the airfoil section are developed. The upper surface 38 and the lower surface 42 are contoured by a thickness distribution and a camber distribution such that the bend of the surfaces is constant or changes at a constant rate over certain regions of the airfoil to avoid the formation of strong, normal shock waves at local Mach numbers less than 1.2 during normal, level flight conditions at standard temperature and pressure.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 18, 1983
Rescinded
Feb 23, 1984
Duration
6 months
Inventor
- 1ROBERT J. FLEMMING
Record Details
- Patent number
- US 4569633
- Application
- 06485788
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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