Boundary layer control system

Details Boundary layer control system Boundary layer control system

1998-02-04

2000-09-05

Poon, Peter M.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244130, 244204, 244203, B64C 2104

Patent

active

061130362

ABSTRACT:
A boundary layer control apparatus including a duct having a streamlined shape which is mounted in spaced apart relation upwind from the wing and extending generally parallel to the leading edge of the wing. The duct has a thickness substantially less than the thickness of the wing to which it is attached. The duct of the present invention includes an opening on the downwind side of the duct for injecting compressed air toward a stagnation line associated with the aircraft wing. The duct according to the present invention can be pivoted during flight so that the air injected from the duct is always directed at the stagnation line, which moves relative to the aircraft wing as aircraft speed increases.

REFERENCES:
patent: 1803655 (1931-05-01), Salisbury et al.
patent: 3064927 (1962-11-01), Chaplin
patent: 3917193 (1975-11-01), Runnels
patent: 4010920 (1977-03-01), Farner
patent: 4752049 (1988-06-01), Cole
patent: 4932611 (1990-06-01), Horikawa

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