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. 17, 1991
Filed:
Mar. 26, 1990
Thomas P Schmitt, Tequesta, FL (US);
Stephen L Collins, Stuart, FL (US);
Untied Technologies Corporation, Hartford, CT (US);
Abstract
A control system for use in gas turbine engines simultaneously provides for improved engine efficiency and extended engine life without sacrificing engine performance. The control system is characterized by both standard and extended engine life (EEL) operating modes. The extended engine life (EEL) mode can be requested by the pilot during periods of less extreme flight maneuvers. The control system will, in response to pilot request, determine the current thrust provided by the engine and reconfigure the engine to provide that value of thrust at values of engine pressure ratio (EPR) as a function of engine airflow which produce a reduction in turbine inlet temperature.