G - Physics – 05 – D
Patent
G - Physics
05
D
341/15
G05D 16/02 (2006.01) F01D 17/08 (2006.01) F01D 21/12 (2006.01) F23N 5/08 (2006.01)
Patent
CA 1104696
IN THE CANADIAN PATENT OFFICE Inventors: PETER JAMES WILLIAMS Invention: IMPROVEMENTS IN CONTROL SYSTEMS FOR APPARATUS ABSTRACT OF THE DISCLOSURE Infra-red radiation detectors are used in gas turbine engines to detect radiation produced by the turbine blades giving an indication of blade temperature. Above a given limit the signal produced by the detector is passed to the fuel control system to shut down the fuel supply of the engine. An additional detector is provided which receives the same image as the first detector but is biased to detect radiation in the visible light part of the spectrum. When incandescent particles pass through the field of vision of the detectors both show an increase in signal due to both types of radiation being increased during this transient event. The signal from the second detector is used to reduce the signal fuel the first detector by an amount sufficient to prevent the fuel supply being temporarily shut down.
303227
Fetherstonhaugh & Co.
Rolls-Royce Limited
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