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:
Apr. 17, 2007
Filed:
Apr. 13, 2005
Colin J Woodward, Derby, GB;
Martin Mcelhone, Derby, GB;
James S Crabtree, Derby, GB;
Paul a Greenacre, Derby, GB;
Colin J Woodward, Derby, GB;
Martin McElhone, Derby, GB;
James S Crabtree, Derby, GB;
Paul A Greenacre, Derby, GB;
Rolls-Royce plc, London, GB;
Abstract
A method of simulating life of a rotor blade mounting feature mounted in a complementary rotor disc mounting feature comprises the steps of providing two specimen mounting features () each having portions defining pressure faces matching in profile respective faces of the rotor blade mounting feature; providing a fixture () having two opposed mounting features () each having portions defining pressure faces () matching in profile respective faces of the rotor disc mounting feature; mounting the specimen mounting features () in the fixture mounting features (); applying a first load to the specimen mounting features (); measuring a strain in a region () of the fixture () between the fixture mounting features (); applying a second load to the fixture (), the second load being substantially perpendicular to the first load; and controlling the second load in response to the measured strain. A high cycle load may simultaneously be applied to the specimen mounting features (). Claims are also included for an apparatus () for carrying out the method.