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. 04, 2001
Filed:
May. 19, 2000
Jeffrey D. Willis, Ernsford Grange, GB;
James Melville, Littleover, GB;
Paul Fletcher, Rugby, GB;
Phillip P. Walsh, Solihull, GB;
Rolls-Royce plc, London, GB;
Abstract
A gas turbine engine comprises a centrifugal compressor (,), an air diffuser (,), a heat exchanger (,), combustion apparatus (,), and first and second turbines (,). The combustion chamber assembly (,) comprises a primary, a secondary and a tertiary fuel and air mixing ducts (,). The compressor (,), diffuser (,), primary and secondary fuel and air mixing ducts (,) and turbines (,) all comprise means (,) for varying the mass flow area at their inlets such that in operation the amount of air mass through each component may be independently variable. Under part power conditions the mass flow is reduced and under full power conditions the mass flow is increased thereby maintaining a substantially constant gas cycle throughout the engine.