An uplock (101) for use with an aircraft landing gear (125) comprises a hook (102) configured to engage a capture pin (126) mounted on the landing gear. The hook (102) is mounted for movement between a closed and locked position and an open and unlocked position. A proximity detector (152, 154) directly detects whether the pin (126) is "up". An uplock hook sensor (114) detects when the hook (102) is in the closed and locked position. The outputs of the proximity detector and the uplock hook sensor may be used to indicate the "up and locked" condition (e.g. if both the capture pin is in its captured positon - i.e. landing gear up - and the hook is in its closed/locked position) and / or to indicate a fault (e.g. in the event that the hook is in its closed/locked position, but the capture pin is not in its captured positon). Such outputs may be provided by an associated device (146) of an avionics system.
Aircraft landing gear uplock system
2019-04-10
Patent
Elektronische Ressource
Englisch