A power drive unit (PDU) for moving cargo relative to a cargo bay of an aircraft includes a cam shaft. The PDU also includes a lift cam coupled to the cam shaft and configured to cause the PDU to be in at least one of a raised position or a lowered position based on rotation of the cam shaft. The PDU also includes a permanent magnet motor configured to generate a cogging torque sufficient to resist rotation of the cam shaft such that the PDU remains in the raised position in response to power being removed from the permanent magnet motor.
Lift and hold differential lift PDU utilizing a permanent magnet rotor
2018-01-30
Patent
Elektronische Ressource
Englisch
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS , Transport- oder Lagervorrichtungen, z.B. Förderer zum Laden oder Abladen / F16H Getriebe , GEARING |
LIFT AND HOLD DIFFERENTIAL LIFT PDU UTILIZING A PERMANENT MAGNET ROTOR
Europäisches Patentamt | 2019
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