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. 28, 2017
Filed:
Nov. 10, 2014
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Marko Bacic, Oxford, GB;
Glenn Alexander Knight, Derby, GB;
Parag Vyas, Nottingham, GB;
Sean Patrick Ellis, Derby, GB;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 19/00 (2011.01); F01D 11/14 (2006.01); F01D 11/20 (2006.01); F02C 9/28 (2006.01); F02C 9/00 (2006.01);
U.S. Cl.
CPC ...
F01D 11/14 (2013.01); F01D 11/20 (2013.01); F02C 9/00 (2013.01); F02C 9/28 (2013.01); F05D 2270/02 (2013.01); F05D 2270/04 (2013.01); F05D 2270/051 (2013.01); F05D 2270/20 (2013.01); F05D 2270/309 (2013.01); F05D 2270/44 (2013.01);
Abstract
A thrust demand signal is provided to a processor of a gas turbine engine and is modified, according to growth time constants of a rotor and/or a casing of the engine, in order to control the rotational speed or the rate of change of rotational speed of the engine so as to prevent contact between the rotor and the casing.