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, 1980
Filed:
Sep. 25, 1978
William J Lewis, Winscombe, GB;
Leslie R Harper, Bristol, GB;
Malcolm J Davis, Bristol, GB;
Richard G Gardiner, Bristol, GB;
Rolls-Royce Limited, London, GB;
Abstract
A translating cowl thrust reverser for a ducted fan gas turbine engine has a fan cowl, the downstream portion of which is translatable axially to open an aperture in the cowl. The aperture has upstream and downstream side-walls and which are curved to deflect fan air flow through the aperture in a forward direction. An annular plate is positioned at the outlet from the aperture and projects into the turbulent flow region on the upstream side-wall to define with the side-wall a recess open to the flow which delays the separation of the flow from the side-wall. This increases the effective area of the outlet and the angle through which the flow is turned thus improving the thrust reverser efficiency to the point at which no cascades are needed in the aperture.