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:
Sep. 08, 2009
Filed:
Jun. 14, 2005
Denis Amiot, Dammarie les Lys, FR;
Frederick Duny, Le Plessis Trevise, FR;
Jérôme Friedel, Blandy les Tours, FR;
Christian Kaincz, Le Mee sur Seine, FR;
Delphine Roussin-moynier, Antony, FR;
Denis Amiot, Dammarie les Lys, FR;
Frederick Duny, Le Plessis Trevise, FR;
Jérôme Friedel, Blandy les Tours, FR;
Christian Kaincz, Le Mee sur Seine, FR;
Delphine Roussin-Moynier, Antony, FR;
Snecma, Paris, FR;
Abstract
A system for controlling a flow of air applied to a gas turbine shroud in an airplane engine, the air flow being adjusted by a regulator valve of position that is controlled by a first control signal calculated on the basis of a first setpoint value corresponding to predetermined clearance between the rotor and the turbine shroud. The system further comprises means for calculating at least one second control signal based on a second setpoint value different from the first value representative of clearance in the turbine, and selector means for-selecting the second control signal to control the regulator valve in response to one or more engine parameters. With such a system, it is possible to control the air flow applied to the shroud in application of a plurality of control logic systems.