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. 26, 2007
Filed:
Jul. 11, 2003
Jan Haggander, Trollhattan, SE;
Jan Haggander, Trollhattan, SE;
Volvo Aero Corporation, Trollhattan, SE;
Abstract
Method and arrangement for providing an outlet nozzle () for use in a liquid fuel rocket engine. The nozzle forms a body of revolution having an axis () of revolution and a cross section that varies in diameter along said axis. The nozzle has a wall structure having a plurality of mutually adjacent cooling channels, helically extending substantially in parallel from the inlet end () of the nozzle to its outlet end (). The nozzle includes at least two longitudinally arranged sections (). A shift between a positive and a negative channel angle in the transition from one section to an adjacent section balances any roll momentum generated by friction of rocket exhausts against the nozzle wall.