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:
Nov. 11, 1986
Filed:
Aug. 24, 1982
Gary F Szuminski, Marietta, GA (US);
Rolls-Royce Inc., New York, NY (US);
Abstract
An ejector nozzle comprising an axially translatable member on which is mounted an axisymmetric array of first flaps 36 and hinged seal plates 39 which serve to define a variable area convergent nozzle. The first flaps have cam followers 38 that co-operate with cams 35 to determine the attitude of the first flaps 36. A plurality of second flaps 40 and second seal plates 43 are mounted on the first flaps. The upstream end of the second flaps 40 are spaced from the downstream ends of the first flaps 36 to form an air inlet. An axisymmetric array of third flaps 50 surround the first and second flaps 36,40. The third flaps 50 are pivotally connected at their downstream ends to the downstream ends of the second flaps 40, and are connected at their upstream ends to fixed structure 32,45,47 by pivotal links 49. A fixed ring 46 carrying rollers 51 surrounds the second flaps 40 at a region intermediate their upstream and downstream ends. The rollers 51 provide a fulcrum about which the second flaps 40 rock. Axial movement of the member 28 causes the first second and third flaps 36,40,50 to take up different positions and open up an air inlet that allows ambient air to mix with the hot gases flowing through the nozzle.