Variable aerodynamic compression flaps

Details Variable aerodynamic compression flaps Variable aerodynamic compression flaps

1977-04-15

1978-10-03

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 124, 244204, 244215, B64C 328

Patent

active

041179960

ABSTRACT:
Aircraft flaps provide rearwardly convergent channels which terminate at or near the trailing edges of the flaps. The forward intakes of the channels are closed when the flaps are elevated and open when the flaps are depressed. A control is programmed to operate the flaps so as to maintain minimum drag until sufficient ground speed is attained for take-off, and to limit the velocity of air discharged from the channels to sub-sonic speeds.

REFERENCES:
patent: 1945254 (1934-01-01), Bittner
patent: 2136403 (1938-11-01), Vance et al.
patent: 2222935 (1940-11-01), Chilton
patent: 2772058 (1956-11-01), Grant
patent: 2891740 (1959-06-01), Campbell
patent: 2964264 (1960-12-01), Multhopp
patent: 3441236 (1969-04-01), Arnholdt
patent: 3447763 (1969-06-01), Allcock
patent: 3478988 (1969-11-01), Roed
patent: 3837601 (1974-09-01), Cole

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