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:
Mar. 03, 2009
Filed:
Jun. 15, 2006
John D. Black, Derby, GB;
John D. Black, Derby, GB;
Rolls-Royce plc, London, GB;
Abstract
Continuous engine monitoring with regard to gas turbine engines is difficult particularly when the engine is utilized for propulsion of an aircraft. Nevertheless, by use of transfer passagesto an arrangement located within the tail coneof an engine, it is possible through a transparent test celland appropriate heating to generate sufficient infra red radiation as well as incandescent visible light for detectorsto determine various constituent parts of the gas flow. Thus a photo detectorcan provide through electrical signals, the proportion of soot/smoke particles in the gas flow through their incandescence, whilst use of filtersfor particular spectral lines in an infra red radiation spectrum will allow detectorsto provide an indication through an electrical signal the proportion and presence of other constituents such as NO, CO and unburnt hydrocarbons in an exhaust gas flow.