Airframe mounted accessory drive gearbox manual decoupler system

Details Airframe mounted accessory drive gearbox manual decoupler system Airframe mounted accessory drive gearbox manual decoupler system

1988-06-22

1990-04-10

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

74527, 192 67R, 192114R, 244 60, F16D 1100, F16D 2314

Patent

active

049152009

ABSTRACT:
In a jet aircraft having a drive which rotatably drives an airframe mounted accessory drive (12), a system for controlling the connection of the drive to the airframe mounted accessory drive is disclosed which permits the manual connection and disconnection of a rotatable shaft (18) from a driven shaft (22) with high reliability by a manually movable handle (30) which is connected to a fork (88) which is rotatable between first and second positions which translates a movable carrier (20) which carries the driven shaft between first and second positions. The system has minimal backlash which insures high integrity in sensed positions of the system which is necessary for safe operation of the aircraft. Furthermore, a safety interlock (44) is provided which is activated by pressurized hydraulic fluid from the airframe mounted accessory drive to prevent translation of the carrier (20) and the rotatable shaft (22) during operation of the aircraft or driving of the airframe mounted accessory drive by an auxiliary power unit (21) during testing of the on board generator (17) or hydraulic pump(s) ( 19).

REFERENCES:
patent: 2180154 (1939-11-01), Lenz
patent: 3039317 (1962-06-01), Wilson
patent: 3214998 (1965-11-01), Hall
patent: 3260541 (1966-07-01), Sadler et al.
patent: 3830111 (1974-08-01), Travaglio
patent: 4116313 (1978-09-01), Maucher
patent: 4349092 (1982-09-01), Geisthoff
patent: 4479568 (1984-10-01), Palazzolo et al.
patent: 4684000 (1987-08-01), Brown
patent: 4697680 (1987-10-01), Faber

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