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:
Oct. 14, 2014
Filed:
Oct. 04, 2012
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Stephen Geoffrey Brown, Derby, GB;
Lorenzo Raffaelli, Derby, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64D 33/02 (2006.01); B64D 29/00 (2006.01); B64D 29/06 (2006.01); B64D 29/02 (2006.01); B64C 11/00 (2006.01);
U.S. Cl.
CPC ...
B64C 11/001 (2013.01); B64D 29/02 (2013.01); B64D 33/02 (2013.01);
Abstract
This invention relates to a propulsive unit for an aircraft, comprising: a nacelle which defines a duct for channeling an airflow when in use and which provides an outwardly facing surface of the propulsive unit, the outwardly facing surface having an aerodynamic shape; a fan unit for accelerating the airflow within the duct when in use; wherein the duct has an inlet and an outlet and the nacelle is operable to adjust the either or both of the area of the inlet and outlet while substantially retaining the aerodynamic shape of the outwardly facing surface.