Helicopter blade airfoil

Details Helicopter blade airfoil Helicopter blade airfoil

1990-05-17

1991-05-14

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416242, B64C 2746

Patent

active

RE0335894

ABSTRACT:
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.

REFERENCES:
patent: 3728045 (1973-04-01), Balch
patent: 4142837 (1979-03-01), de Simone
patent: 4248572 (1981-02-01), Fredenburgh
patent: 4314795 (1982-02-01), Dadone
patent: 4412664 (1983-11-01), Noonan
patent: 4459083 (1984-07-01), Bingham
patent: 4567337 (1986-01-01), Zimmer et al.
patent: 4569633 (1986-02-01), Flemming, Jr. et al.
patent: 4652213 (1987-03-01), Thibert

Affiliated with

Also associated with

Rating

Helicopter blade airfoil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Helicopter blade airfoil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helicopter blade airfoil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1637467