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:
Aug. 24, 2004
Filed:
Jul. 05, 2002
James P. Allore, South Windsor, CT (US);
Stephen A. Paul, Andover, CT (US);
Charles D. Stoner, Rocky Hill, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A variable geometry exhaust nozzle for a turbine engine includes convergent and divergent flaps that circumscribe a gaspath and define convergent and divergent nozzle sections with a throat therebetween. A projection , which resides on the divergent flaps, extends radially inwardly from the nozzle. The nozzle also includes a coolant flowpath comprising an interior space in the nozzle, an intake for admitting coolant C into the interior space, and a coolant outlet aft of the intake for discharging the coolant from the interior space. The intake resides forward of the throat. During operation, a coolant film flows along the radially inner surface of the nozzle. The projection encourages a portion of the coolant film to enter and flow through the the coolant flowpath to convectively cool the nozzle. The location of the intake, forward of the throat, takes advantage of the locally high gaspath pressure to ensure that an adequate quantity of the coolant enters and flows through the coolant flowpath.