Hamilton Sundstrand Corporation

Connor Berube

Myles R Kelly

A valve system includes a valve body defining an inlet, an outlet, and a flow path connecting the inlet in fluid communication with the outlet through one or more flow paths through the valve body. A poppet is slidingly engaged to the valve body for movement along an axis, between a first position allowing flow though the flow path, and a second position blocking flow the flow path. An electrical circuit makes a path through the valve body. A controller is operatively connected to the electrical circuit, configured to monitor electrical resistance of the electrical circuit and to output a signal indicative of open or closed state of the valve based on whether electrical resistance of the electrical circuit is at a first level or at a second level.

Two position feedback valve

In accordance with at least one aspect of this disclosure, a system includes, a first moveable member disposed in a first chamber configured to move between a first position and a second position of the first moveable member to allow or prevent fluid from passing from an inlet of the first chamber to an outlet of the first chamber. A second moveable member is disposed in a second chamber configured to move between a first position and a second position of the second moveable member to allow or prevent fluid from entering a biasing chamber, the second chamber being fluidly connected to the first chamber.

Remote passively and actively actuated valve systems

A sleeve valve includes an inlet port and an outlet port. A sleeve is movable to close flow from the inlet port to the outlet port. The sleeve valve has a sleeve biased to an open position at which it allows flow from the inlet port to the outlet port by a spring. Pressure in a pressure chamber urges the sleeve to a closed position at which it blocks flow from the inlet port to the outlet port. A line pressure conduit communicates the fluid chamber into the pressure chamber. Pressurized air is supplied to the pressure chamber through a selectively closed valve. The selectively closed valve is opened to allow the flow of high pressure air from a pressure source into the pressure chamber to move the sleeve to a closed position. A bleed air system for a gas turbine engine is also disclosed.

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Bloomfield, CT, United States of America

Connor Berube