BACK-UP FEATHERER
First Claim
1. A back-up featherer for an engine arrangement having a main hydraulic actuator which angularly displaces propellers of a propeller assembly of the engine arrangement, the engine arrangement further having one or more fluid supply lines for transferring hydraulic fluid between a hydraulic pressure power source located on a static structure of the engine arrangement and the main hydraulic actuator, the back-up featherer having:
- a back-up actuator assembly for angular displacement of the propellers, the back-up actuator assembly rotating with the propeller assembly,a signal detector that is operatively connected to the back-up actuator assembly and rotates with the propeller assembly, anda back-up rotating coupling, a static side of the back-up rotating coupling being mounted to the static structure of the engine arrangement and communicating with a regulator located on a static structure of the engine arrangement, and a rotating side of the back-up rotating coupling rotating with the propeller assembly and communicating with the signal detector,wherein the back-up actuator assembly angularly displaces the propellers when the signal detector detects a signal from the regulator to displace the propellers.
1 Assignment
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Accused Products
Abstract
A back-up featherer for an engine arrangement having a main hydraulic actuator which angularly displaces propellers of a propeller assembly of the engine arrangement, and fluid supply lines for transferring hydraulic fluid between a hydraulic pressure power source located on a static structure of the engine arrangement and the main hydraulic actuator. The back-up featherer has a back-up actuator assembly for angular displacement of the propellers, the back-up actuator assembly rotating with the propeller assembly, a signal detector operatively connected to the back-up actuator assembly and rotates with the propeller assembly, and a back-up rotating coupling. A static side of the back-up rotating coupling is mounted to the static structure of the engine arrangement and communicates with a regulator located on a static structure of the engine arrangement. A rotating side of the back-up hydraulic rotating coupling rotates with the propeller assembly and communicates with the signal detector.
30 Citations
14 Claims
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1. A back-up featherer for an engine arrangement having a main hydraulic actuator which angularly displaces propellers of a propeller assembly of the engine arrangement, the engine arrangement further having one or more fluid supply lines for transferring hydraulic fluid between a hydraulic pressure power source located on a static structure of the engine arrangement and the main hydraulic actuator, the back-up featherer having:
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a back-up actuator assembly for angular displacement of the propellers, the back-up actuator assembly rotating with the propeller assembly, a signal detector that is operatively connected to the back-up actuator assembly and rotates with the propeller assembly, and a back-up rotating coupling, a static side of the back-up rotating coupling being mounted to the static structure of the engine arrangement and communicating with a regulator located on a static structure of the engine arrangement, and a rotating side of the back-up rotating coupling rotating with the propeller assembly and communicating with the signal detector, wherein the back-up actuator assembly angularly displaces the propellers when the signal detector detects a signal from the regulator to displace the propellers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification