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US 10,648,428 B2Granted
Aircraft thrust reverser system with hydraulic assist device
AssigneeHoneywell International Inc.
InventorsSteve Abel, James Wawrzynek, Patrick Hinke, Ron Vaughan
Life of this patent
Estimating the term…
Abstract
A thrust reverser system for a gas turbine engine includes a support structure, a transcowl, an actuator, and a hydraulic assist mechanism. The actuator is configured to supply an actuation force to the transcowl to thereby move the transcowl between the stowed and deployed positions. The hydraulic assist mechanism is coupled to the transcowl and is configured to react reverse thrust loads on the transcowl at least when the transcowl is translating between the stowed position and the deployed position.
Claims18
A thrust reverser system for a gas turbine engine, comprising:
- a support structure configured to be mounted to the gas turbine engine;
- a transcowl mounted on the support structure and axially translatable, relative to the support structure, between a stowed position and a deployed position;
- an actuator responsive to commands supplied from a control to supply an actuation force to the transcowl to thereby move the transcowl between the stowed and deployed positions;
- and
- a hydraulic assist mechanism coupled to the transcowl and configured to react reverse thrust loads on the transcowl at least when the transcowl is translating between the stowed position and the deployed position, the hydraulic assist mechanism including:
- a housing having an inner surface that defines a piston chamber,
- a piston movably disposed within the housing and dividing the piston chamber into a first variable fluid volume and a second variable fluid volume,
- a rod having a first end and a second end, the first end coupled to the piston, the second end coupled to the transcowl, whereby the first variable fluid volume decreases when the transcowl is translating between the stowed position and the deployed position,
- a snubbing conduit in fluid communication with the first fluid volume and the second fluid volume,
- a throttle valve disposed within the snubbing conduit and configured to throttle fluid flow from the first variable fluid volume to the second variable fluid volume when the transcowl is translating between the stowed position and the deployed position,
- a stow conduit in fluid communication with the first variable fluid volume and the second variable fluid volume, and
- a check valve disposed within the stow conduit and movable between a normally shut position and an open position, the check valve configured to direct fluid flow to bypass the throttle valve when the transcowl is translating from the deployed position to the stowed position.
9 more elements
A thrust reverser system for a gas turbine engine, comprising:
- a support structure configured to be mounted to the gas turbine engine;
- a transcowl mounted on the support structure and axially translatable, relative to the support structure, between a stowed position and a deployed position;
- an actuator responsive to commands supplied from a control to supply an actuation force to the transcowl to thereby move the transcowl between the stowed and deployed positions;
- and
- a hydraulic assist mechanism coupled to the transcowl and configured to react reverse thrust loads on the transcowl at least when the transcowl is translating between the stowed position and the deployed position, the hydraulic assist mechanism including:
- a housing having an inner surface that defines a piston chamber,
- a piston movably disposed within the housing and dividing the piston chamber into a first variable fluid volume and a second variable fluid volume,
- a rod having a first end and a second end, the first end coupled to the piston, the second end coupled to the transcowl, whereby the first variable fluid volume decreases when the transcowl is translating between the stowed position and the deployed position,
- a snubbing conduit in fluid communication with the first fluid volume and the second fluid volume,
- a snubbing orifice formed in the housing between the first variable fluid volume and the snubbing conduit,
- a throttle valve disposed within the snubbing conduit and configured to throttle fluid flow from the first variable fluid volume to the second variable fluid volume when the transcowl is translating between the stowed position and the deployed position,
- a stow conduit in fluid communication with the first variable fluid volume and the second variable fluid volume, and
- a check valve disposed within the stow conduit and movable between a normally shut position and an open position, the check valve configured to direct fluid flow to bypass the throttle valve when the transcowl is translating from the deployed position to the position.
10 more elements
A thrust reverser system for a gas turbine engine, comprising:
- a support structure configured to be mounted to the gas turbine engine;
- a transcowl mounted on the support structure and axially translatable, relative to the support structure, between a stowed position and a deployed position;
- an actuator responsive to commands supplied from a control to supply an actuation force to the transcowl to thereby move the transcowl between the stowed and deployed positions;
- and
- a hydraulic assist mechanism coupled to the transcowl and configured to react reverse thrust loads on the transcowl at least when the transcowl is translating between the stowed position and the deployed position, the hydraulic assist mechanism including:
- a housing having an inner surface that defines a piston chamber,
- a piston movably disposed within the housing and dividing the piston chamber into a first variable fluid volume and a second variable fluid volume,
- a rod having a first end and a second end, the first end coupled to the piston, the second end coupled to the transcowl, whereby the first variable fluid volume decreases when the transcowl is translating between the stowed position and the deployed position,
- a stow conduit in fluid communication with the first variable fluid volume and the second variable fluid volume,
- a check valve disposed within the stow conduit and movable between a normally shut position and an open position,
- a snubbing conduit in fluid communication with the first fluid volume and the second fluid volume,
- an accumulator in fluid communication with the snubbing conduit and the stow conduit, and
- a throttle valve disposed within the snubbing conduit and configured to throttle fluid flow from the first variable fluid volume to the second variable fluid volume when the transcowl is translating between the stowed position and the deployed position,
- wherein the check valve is configured to direct fluid flow to bypass the throttle valve when the transcowl is translating from the deployed position to the stowed position, and
- wherein the throttle valve comprises:
- a valve body including a first control volume and a second control volume,
- a spool movably disposed within the valve body, and
- a spring disposed within the first control volume and supplying a bias force to the spool.
15 more elements
Dependencies are inferred from the claim text.