초록 ▼

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 sh

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).

대표청구항 ▼

In jet aircraft having a drive which rotatably drives an airframe mounted accessory drive, a system for controlling the connection of the drive to the airframe mounted accessory drive comprising; a movable member which is pivotal at a pivot point between first and second positions; means for locking

In jet aircraft having a drive which rotatably drives an airframe mounted accessory drive, a system for controlling the connection of the drive to the airframe mounted accessory drive comprising; a movable member which is pivotal at a pivot point between first and second positions; means for locking the movable member in the first and second positions; an axially movable carrier which is movable between first and second positions, the movable carrier carrying a shaft which is positioned in first and second axial positions respectively when the carrier is in the first and second axial positions, the shaft having a first end which is coupled to the airframe mounted accessory drive and a second end which is connectable to a shaft drive by a propulsion turbine of the aircraft when the carrier is in the first axial position and decoupled from the airframe mounted accessory drive when the carrier is in the second position, the first position of the movable member corresponding to the first position of the carrier and the second position of the movable member corresponding to the second position of the carrier and rotation of the movable member between the first and second positions causing axial movement of the carrier from the first axial position to the second axial position and axial movement of the shaft carried by the carrier from the first axial position to the second axial position; a rotatably mounted shaft which is connected to the movable member at the pivot point; a fork having a first end which is connected to the rotatably mounted shaft and a second end which is connected to the carrier with rotation of the shaft causing the fork to rate between first and second rotary positions which correspond to the first and second axial positions of the carrier; a pump driven through the airframe mounted accessory drive to produce pressurized lubrication fluid in response to a rotational drive applied to the pump; and movable locking means which is in fluid connection with the pump with the movable locking means being biased in a first position when pressurized lubrication fluid is not connected thereto and being positioned in a second position by pressurized lubrication fluid from the pump for locking the carrier in either the first or second position as long as the pressurized fluid is connected to the movable locking means.