| 摘要 |
<p>A deployment-retraction apparatus (10) for an air turbine (12) of an aircraft movable from a stowed inoperative position within the aircraft to an extended operable position externally of and in the airstream of the aircraft, and being retractable from the extended position to the stowed position. A piston and cylinder device (30, 32) is used to extend and retract the turbine. The piston is moved to an extended position by a high force mechanical compression spring (34). The piston is moved to a retracted position by applying fluid pressure (82) in opposition to the compression spring. A mechanical latch and release mechanism (42) is operatively associated with the piston for holding the piston in retracted condition and releasing the piston upon initiation of an electrical signal (68). The fluid pressure to retract the piston is applied in response to initiating an electrical signal (78). The fluid pressure also retracts a downlock pin (72) which holds the piston in its extended position.</p> |
