The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Mar. 15, 2002
Dominique Valentian, Rosny sur Seine, FR;
SNECMA Moteurs, Paris, FR;
Abstract
The cryogenic propulsion module comprises a main cryogenic thruster ( ), two attitude-controlling secondary thrusters ( ), tanks ( ) for feeding cryogenic propellants, a device for intermittently pressurizing the tanks ( ), and a device for initiating firing of the main cryogenic thruster ( ) in intermittent manner while the tanks ( ) are intermittently pressurized. The device for intermittently pressurizing a tank ( ) comprises a heat exchange circuit associated with a heat accumulator ( ) and a device ( ) for putting a predetermined quantity of a propellant into circulation in the heat exchanger circuit. The module also comprises a device for heating the heat accumulator ( ) in the periods between two consecutive firings.