Strakes for landing speed reduction

Details Strakes for landing speed reduction Strakes for landing speed reduction

1990-08-21

1993-10-05

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 45A, B64C 126, B64C 700, B64C 2306

Patent

active

052497623

ABSTRACT:
An engine inlet having strakes for landing speed reduction on a trapezoidal wing shaped aircraft, specifically the T-38. The strakes are mounted on the engine inlet just forward of the wing leading edge and well above the wing plane. The preferred strakes have an area greater than 3% of the wing area and are uncanted with respect to the wing. Use of the strakes forstalls wing buffet, yet exhibits well behaved longitudinal stability at high angles of attack thereby allowing operation of the aircraft at higher angles of attack and associated higher coefficients of lift, such as during landing, resulting in a reduction of the landing speed of the aircraft. Various strakes in the placement thereof are disclosed.

REFERENCES:
patent: 3744745 (1973-07-01), Kerker
patent: 3960345 (1976-06-01), Cippert, Jr.
patent: 4569494 (1986-02-01), Sakata
patent: 4685643 (1987-08-01), Henderson et al.
patent: 4767083 (1988-08-01), Koenig et al.
patent: 4786009 (1988-12-01), Rao et al.
patent: 4896846 (1990-01-01), Strom
Jane's, All The World's Aircraft 1974-75, pp. 182, 183 (Saab AJ37 Viggen), pp. 790 & 793.

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