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:
Dec. 06, 2011
Filed:
Jan. 02, 2009
Applicant:
Mark Timothy Mitchell, Bristol, GB;
Inventor:
Mark Timothy Mitchell, Bristol, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 11/00 (2006.01); B64C 27/00 (2006.01); B63H 1/14 (2006.01); B63H 7/02 (2006.01); F01D 5/08 (2006.01); F01D 5/18 (2006.01); F01D 5/14 (2006.01); F01D 5/28 (2006.01); F03D 11/02 (2006.01); F04D 29/58 (2006.01); F03B 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gas turbine engine airfoil () has a wall () provided with a cooling effusion hole () therein to facilitate film cooling of the external surface () of the wall (). A member () attached to the internal surface () of the airfoil wall () is provided with an aperture () which at least partially overlaps the cooling effusion hole (). The airfoil wall () and member () are formed from materials having different coefficients of thermal expansion and are mounted such that over a temperature range, the aperture () and cooling effusion hole () interact to a greater or lesser extent to modulate the flow of cooling air therethrough.