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US 2014/0174054 A1Published application
Feed system and a method of suppressing the pogo effect
AssigneesCentre National D'Etudes Spatiales (Cnes), Snecma
InventorsAlain Kernilis, Nicolas Lemoine, Ludivine Boulet, Serge Le Gonidec
Life of this patent
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Abstract
A rocket engine feed system, includes a feed circuit including a device for varying a gas volume in the feed circuit to suppress the POGO effect. A method of suppressing the POGO effect varies at least one hydraulic resonant frequency by varying a rate at which gas is injected into the feed circuit.
Claims22
1-21. (canceled)
A feed system for feeding a rocket engine with at least one liquid propellant, the system comprising:
- at least one feed circuit;
- and
- at least one device for varying a volume of gas in the feed circuit, which device is configured to cause a volume of gas in the feed circuit to vary while the rocket engine is in operation.
A method of suppressing POGO effect, comprising:
- varying a volume of gas in a feed circuit of a system for feeding a rocket engine with at least one liquid propellant while the rocket engine is in operation, to control a difference between at least one hydraulic resonant frequency of the feed circuit and at least one mechanical resonant frequency of a structure coupled to the feed circuit.
Dependencies are inferred from the claim text.