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US 11,530,033 B2Granted
Thrust producing unit with a fail-safe electrical drive unit
AssigneeAirbus Urban Mobility GmbH
InventorGero Preisser
Life of this patent
Estimating the term…
Abstract
A thrust producing unit with a fail-safe electrical drive unit that drives a rotor of a rotary-wing aircraft. Fail-safe electrical drive unit may include input shafts, fixedly attached belt pulleys that are fixedly attached to the respective input shafts, output shaft that is coupled to rotor, freewheeling belt pulleys that are mounted to output shaft by means of respective freewheels such that output shaft rotates freely when output shaft rotates faster than one of the freewheeling belt pulleys belts that connect fixedly attached belt pulleys with the respective freewheeling belt pulleys, and electric motors that are coupled with the respective input shafts.
Claims20
A thrust producing unit, comprising:
- a rotor;
- and
- a fail-safe electrical drive unit, comprising:
- first and second input shafts, wherein the first input shaft has a first end and a second end that is opposite the first end;
- first and second fixedly attached belt pulleys that are fixedly attached to the respective first and second input shafts;
- an output shaft that is coupled to the rotor;
- first and second freewheeling belt pulleys, wherein the first freewheeling belt pulley is mounted to the output shaft by means of a first freewheel such that the output shaft rotates freely when the output shaft rotates faster than the first freewheeling belt pulley, and wherein the second freewheeling belt pulley is mounted to the output shaft by means of a second freewheel such that the output shaft rotates freely when the output shaft rotates faster than the second freewheeling belt pulley;
- first and second belts, wherein the first belt connects the first fixedly attached belt pulley with the first freewheeling belt pulley, and wherein the second belt connects the second fixedly attached belt pulley with the second freewheeling belt pulley;
- first and second electric motors that are coupled with the respective first and second input shafts, wherein the first electric motor drives the output shaft via the first input shaft, the first fixedly attached belt pulley, the first belt, and the first freewheeling belt pulley, and wherein the second electric motor drives the output shaft via the second input shaft, the second fixedly attached belt pulley, the second belt, and the second freewheeling belt pulley;
- and
- at least first and second tensioners, wherein the first tensioner is attached to the first end of the first input shaft and the second tensioner to the second end of the first input shaft, wherein the first and second tensioners are adapted to adjust a tension of the first belt.
8 more elements
A thrust producing unit, comprising:
- a rotor;
- and
- a fail-safe electrical drive unit, comprising:
- an output shaft coupled to the rotor, the output shaft rotating about an axis of rotation,
- a first electric motor drivingly coupled to a first input shaft, the first input shaft having a first end and a second end opposite thereto,
- a first fixedly attached belt pulley fixedly attached to the first input shaft,
- a first freewheeling belt pulley mounted to the output shaft by a first freewheel such that the output shaft rotates freely when the output shaft rotates faster than the first freewheeling belt pulley, the first freewheeling belt pulley positioned to rotate about the axis of rotation,
- a first belt connecting the first fixedly attached belt pulley with the first freewheeling belt pulley,
- first and second tensioners, the first tensioner attached to the first end of the first input shaft and the second tensioner attached to the second end of the first input shaft, wherein the first and second tensioners are adapted to move the first input shaft to adjust a tension of the first belt,
- a second electric motor drivingly coupled to a second input shaft,
- a second fixedly attached belt pulley fixedly attached to the second input shaft,
- a second freewheeling belt pulley mounted to the output shaft by a second freewheel such that the output shaft rotates freely when the output shaft rotates faster than the second freewheeling belt pulley, the second freewheeling belt pulley positioned to rotate about the axis of rotation, and
- a second belt connecting the second fixedly attached belt pulley with the second freewheeling belt pulley,
- wherein the first electric motor drives the output shaft via the first input shaft, the first fixedly attached belt pulley, the first belt, and the first freewheeling belt pulley, and
- wherein the second electric motor drives the output shaft via the second input shaft, the second fixedly attached belt pulley, the second belt, and the second freewheeling belt pulley.
12 more elements
Dependencies are inferred from the claim text.