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:
May. 05, 1992
Filed:
Feb. 15, 1979
Applicant:
Inventor:
Douglas J Nightingale, Bristol, GB;
Assignee:
Rolls-Royce (1971) Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02K / ;
U.S. Cl.
CPC ...
23926539 ; 60271 ; 23926543 ;
Abstract
A variable geometry nozzle for a gas turbine engine in which a circumferential array of flaps are pivotally connected to the engine by their upstream ends, the flaps comprising interdigitated flexible and rigid flaps. The geometry of the nozzle is varied by drawing together the side edges of adjacent flexible flaps which causes pivoting of both the rigid and flexible flaps and a change in the curvature of the flexible flaps. The rigid flaps seal the spaces between the side edges of adjacent flexible flaps. A modification is shown using auxiliary radially outwardly flared flaps to provide convergent divergent geometry.