Arianegroup Sas

Snecma

Centre National Detudes Spatiales

David Hayoun

Didier Vuillamy

François Danguy

Gérard Roz

Nicolas Soulier

François Lassoudiere

Jean Michel Sannino

Pascal Marcel Jean Noir

The device comprises a primary heater () suitable for heating the propellant coming from the tank () prior to it being reintroduced into its tank. The primary heater uses the heat of combustion from the engine () and the device further comprises a secondary heater () having its source of heat independent from the operation of the engine, the secondary heater being arranged downstream from the primary heater () in order to heat the propellant between its outlet from the primary heater and being reintroduced into the tank. The device also has means () between the feed to the primary heater () and the return of the propellant to the tank for putting the propellant under pressure.

Device for pressurizing a propellant tank of a rocket engine

The invention relates to a feed device for feeding a thrust chamber () of a rocket engine () with first and second propellants. According to the invention, a first feed circuit () of the thrust chamber () comprises a turbopump () having at least one pump () for pumping the first propellant from a first tank (), and a turbine () mechanically coupled to said pump (). The first feed circuit connects an outlet of the pump to an inlet of the turbine via a heat exchanger () configured to heat the first propellant with heat generated by the thrust chamber, in order to actuate the turbine. According to the invention, a second feed circuit () is configured to feed the thrust chamber with second propellant from a second tank () that is configured to be pressurized. The invention also provides a method of feeding a rocket engine thrust chamber with first and second propellants.

Method and a device for feeding a rocket engine

A pressurizing device and method, for pressurizing a first tank, the device including at least a second tank configured to contain a cryogenic fluid, a first pressurizing circuit for putting the second tank into communication with the first tank, the first pressurizing circuit including at least a first heat exchanger for heating a flow of the cryogenic fluid extracted from the second tank through the first pressurizing circuit, and a second pressurizing circuit with a compressor, branched off from the first pressurizing circuit and leading to the second tank. A feed system for feeding a reaction engine with at least a first liquid propellant includes at least a first tank configured to contain the first liquid propellant, and a device for pressurizing the first tank.

Pressurizing device and method

Growing community of inventors

Paris, France

David Hayoun