Helicopter blade airfoil

Details Helicopter blade airfoil Helicopter blade airfoil

B - Operations, Transporting

64

C

244/120

B64C 27/46 (2006.01) B64C 27/467 (2006.01)

Patent

CA 1295310

ABSTRACT HELICOPTER BLADE AIRFOIL A family of airfoil cross sections, termed SC21xx, for use in a helicopter blade is disclosed. The airfoil (36) achieves maximum lift performance equivalent to prior art airfoil configurations without incurring increased aerodynamic drag at high velocities. The airfoil (36) was developed by thickening and drooping the leading edge region (38) of the prior art airfoil (30) improving lift in the leading edge region (38) and delaying the formation of sonic shock waves at high velocities.

541505

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