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:
Jun. 14, 1983
Filed:
Jun. 23, 1980
Albert H Bell, III, Birmingham, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A gas turbine engine has a compressor and power turbine driven by gas flow across a nozzle arrangement that includes a partial admission gate valve therein movable into and out of overlying relationship with a limited number of vanes of the nozzle in order to control power output therefrom during part load operation of the engine. Each gate has a flat downstream face. The gates are moved between stored and blocking positions. Each gate face is engageable with flat valve seat surfaces on nozzle vanes when in the blocking position whereby motive gas pressure will hold the gates sealed against the seats. The gates are operated by quick response pneumatic operators having a regulated source of pressure applied to the operators to move the gates to their blocking positions during a low power road load mode of engine operation; and wherein means are included to produce a quick opening of the gate valve from its partial blocking position to a full open position during a time period that prevents turbine compressor surge as the gas turbine engine responds to a higher power demand wherein greater gas flows through the nozzle for increasing power output from the power turbine of the engine.