PROPULSION SYSTEM THERMAL MANAGEMENT

Abstract: a flying vehicle propulsion system comprises a propulsor, a drive system, a heat exchanger, and a housing in which the heat exchanger is provided. the propulsor produces a propulsor fluid flow. in a first operation configuration of the propulsion system, at least part of the propulsor fluid flow is incident on the exchanger. a propulsor fluid flow inlet port of the housing fluidly communicates with a chamber of the housing on an inlet side of the exchanger. the inlet port receives the propulsor fluid flow for ingestion into the chamber and exchanger and comprises a valve to close the port when the valve is closed and open the port when the valve is open. the valve is biased such that at least one of: the valve opens passively under a propulsor fluid flow rate influence above a pre-defined threshold impinging on the valve; and the valve closes passively under a biasing influence.

Inventor(s): James SHEPPARD, Andrea DE MATTEIS

CPC Classification: B64D33/10 (EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT)

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