Mounting arrangement for a tension member driven system
AssigneePratt & Whitney Canada Corp.
InventorPaul Weaver
Life of this patent
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Abstract
An aircraft engine comprises a rotor, an engine case having first and second mounting brackets projecting from an exterior surface thereof, an auxiliary engine system. The system includes an electric machine, a belt drive operatively coupled to the rotor, and a gearbox operatively coupled between the belt drive and the electric machine. The gearbox has a gearbox case with a cradle integrated thereto. The gearbox case and the cradle forms a monolithic body. The monolithic body is pivotally mounted to the first and second mounting brackets. A link is provided between the engine case and the monolithic body. A length of the link is adjustable to adjust a tension of the belt drive by setting an angular position of the monolithic body relative to the engine case.
Claims20
An assembly for an aircraft engine, comprising:
- an engine case having an exterior surface with a first and a second mounting bracket projecting from the exterior surface;
- a rotor next to the engine case;
- an auxiliary engine system including:
- an electric machine, a belt drive operatively coupled to the rotor, and a gearbox operatively coupled between the belt drive and the electric machine, the gearbox having a gearbox case with a cradle integrated thereto, the gearbox case and the cradle forming a monolithic body, the monolithic body pivotally mounted to the first and second mounting brackets;
- an adjustment link between the engine case and the monolithic body, a length of the adjustment link adjustable to adjust a tension of the belt drive by setting an angular position of the monolithic body relative to the engine case.
An assembly for an aircraft propulsion system, comprising:
- an engine case housing a turbine;
- a rotor drivingly connected to the turbine for rotation about an engine axis;
- and
- an auxiliary engine system externally mounted to the engine case, the auxiliary engine system comprising an electric machine, a gearbox operatively connected to the electric machine, a belt drive operatively connecting the gearbox to the rotor;
- wherein a cradle is integrated to a gearbox case of the gearbox to form therewith a monolithic body, the monolithic body pivotally mounted to the engine case for pivotal movement about a pivot axis, and wherein an adjustable link is connected at a first end to the engine case and at a second end to the monolithic body at a location spaced from the pivot axis, a length of the adjustable link adjustable to adjustably set an angular position of the monolithic body about the pivot axis.
Dependencies are inferred from the claim text.