Back to results
US 11,440,639 B2Granted
Aircraft with distributed hydraulic system
AssigneeBombardier Inc.
InventorsGustave Nfonguem, Vlad Iliescu, Avraham Ardman
Life of this patent
Estimating the term…
Abstract
An aircraft comprises an aircraft structure, a flight control surface attached to the aircraft structure, and a local hydraulic power pack disposed proximal to the flight control surface. The local hydraulic power pack is configured to provide pressurized hydraulic fluid for actuating the flight control surface. The local hydraulic power pack comprises a reservoir for the hydraulic fluid and two hydraulic pumps for pressurizing the hydraulic fluid.
Claims18
An aircraft comprising:
- an aircraft structure;
- a plurality of flight control surfaces attached to the aircraft structure;
- a plurality of local hydraulic power packs providing pressurized hydraulic fluid for actuating two separate flight control surfaces of the plurality of flight control surfaces, each local hydraulic power pack comprising a reservoir for the hydraulic fluid and two hydraulic pumps for pressurizing the hydraulic fluid;
- and
- a plurality of hydraulic actuators for actuating the two separate flight control surfaces,
- wherein:
- a combined flow of hydraulic fluid from the two hydraulic pumps provides the pressurized hydraulic fluid for actuating the two separate flight control surfaces;
- none of the plurality of hydraulic actuators of the two separate flight control surfaces is coupled to a central hydraulic system of the aircraft;
- at least one of the plurality of flight control surfaces is actuated using pressurized hydraulic fluid from at least two of the plurality of local hydraulic power packs;
- in a first of the plurality of local hydraulic power packs, the hydraulic pumps are configured to be electrically driven by respective motors powered by different electrical power busses powered by different respective engines of the aircraft;
- and
- the aircraft comprises two power and control modules where each power and control module is associated with a respective one of the motors and is powered by a respective one of the different electrical power busses.
9 more elements
An aircraft comprising:
- an aircraft structure comprising an empennage;
- a plurality of flight control surfaces attached to the empennage;
- a plurality of local hydraulic power packs configured to provide pressurized hydraulic fluid for actuating the flight control surfaces, each local hydraulic power pack comprising a reservoir for the hydraulic fluid and two hydraulic pumps for pressurizing the hydraulic fluid;
- and
- a plurality of hydraulic actuators for actuating the flight control surfaces,
- wherein:
- a combined flow of hydraulic fluid from the two hydraulic pumps provides the pressurized hydraulic fluid for actuating one of the flight control surfaces;
- none of the plurality of hydraulic actuators is coupled to a central hydraulic system of the aircraft;
- and
- at least one of the plurality of flight control surfaces is actuated using pressurized hydraulic fluid from at least two of the plurality of the plurality of local hydraulic power packs;
- the two hydraulic pumps of each local hydraulic power pack are configured to be electrically driven by different motors powered by different electrical power busses powered by different respective engines of the aircraft;
- and
- the aircraft comprises a power and control module associated with each of the motors and powered by a respective one of the different electrical power busses.
10 more elements
Dependencies are inferred from the claim text.