Speedbrake

Details Speedbrake Speedbrake

1986-11-17

1988-11-08

Barefoot, Galen

Aeronautics and astronautics

Retarding and restraining devices

Aerodynamic retarders

244213, B64C 936

Patent

active

047830247

ABSTRACT:
The speedbrake of the present invention is comprised of a housing which can be stored in a faired surface of an aircraft which is not within the aerodynamic envelope of its wing. The housing is associated with a track system which permits it to be translated between a retracted position, where it is located inside of the faired surface, and an extended position, where it protrudes into the airstream to create drag when the aircraft is in flight. Pivotally mounted in the housing are plates which rotate up into the housing when the speedbrake is retracted and extend downwardly from the housing when the speedbrake is extended. The speedbrake is installed in pairs with one being located on each side of the aircraft. One of the speedbrakes is moved between its extended and retracted positions by a motor and the other speedbrake is connected to the motor-powered one by cables. Since the speedbrakes are not located on or near the wing they do not influence the pitch or control of the aircraft when they extend or retract. Thus, the speedbrakes can be deployed at any time regardless of the speed and altitude of the aircraft.

REFERENCES:
patent: 2723091 (1955-11-01), Davies et al.
patent: 2768801 (1956-10-01), Bitner et al.
patent: 2821352 (1958-01-01), Phillips
patent: 3318555 (1967-05-01), Swogger et al.
Dolan, "Get Down to Speed and Altitude-Fast" Private Pilot, May 1987, pp. 32-37.

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