Method and system for stall margin modulation as a function of engine health

An engine and core engine technology, applied in engine cooling, engine components, engine control, etc., can solve problems such as inaccurate design assumptions, manufacturing tolerances, and reduced engine performance

Inactive Publication Date: 2017-06-30
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, operating with a larger stall margin results in reduced engine performance, but safety and stability must take precedence over performance
In addition, actual compressor operability margins may differ from the design or expected operability of the engine due to inaccuracies and / or manufacturing tolerances in design assumptions and / or variations in operating conditions

Method used

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  • Method and system for stall margin modulation as a function of engine health
  • Method and system for stall margin modulation as a function of engine health
  • Method and system for stall margin modulation as a function of engine health

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Embodiment Construction

[0114] In the following specification and claims, reference will be made to several terms which shall be defined to have the following meanings.

[0115] The singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0116] "Optional" or "optionally" means that the subsequently described event or circumstance can or cannot occur, and that the description includes instances where the circumstance occurs and instances where it does not.

[0117] Approximate language, as used herein throughout the specification and claims, may be used to modify any quantitative expression that is permissible to be varied without resulting in a change in the essential function to which it is related. Accordingly, a value modified by one or more terms, such as "about," "approximately," and "approximately," is not to be limited to the precise value specified. In at least some cases, the approximate language may correspond to the precision of the in...

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Abstract

The invention relates to a method and a system for stall margin modulation as a function of engine health. A gas turbine engine 100 is provided, including a core engine including a multistage compressor 124, and a stall margin modulation (SMM) control system 180 in communication with the core engine. The processor is programmed to determine the stall margin 304 of the compressor124, and operate the compressor under the stall margin. The processor is further programmed to assess a health of the compressor 124, and modify the stall margin 304 based on the assessed health of the compressor 124.

Description

[0001] Statement Regarding Federally Sponsored Research and Development [0002] This invention was made with Government support under Contract No. DTWAFA-10-C-00046 awarded by the Federal Aviation Administration (FAA). The US Government may have certain rights in this invention. technical field [0003] The field of the present disclosure relates generally to gas turbine engines, and more particularly to methods and systems for altering compressor stall margin based on engine health. Background technique [0004] In at least some known engine systems, the compressor is specified and operated to avoid compressor stall even under "worst case" conditions. Engine operating transients and potential engine degradation "make up" the operating conditions, even for new engines, which add so-called "stall margins" or operability margins to avoid compressor stalls. However, operating with a larger stall margin results in reduced engine performance, but safety and stability must tak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F02C9/52F02C9/54F01D17/00
CPCF01D17/00F02C9/52F02C9/54F04D27/002F05D2270/101F05D2260/80F01D17/08F04D27/0246F04D27/0284F04D27/0223F02C9/18F02C9/20F01D17/085F04D19/02F02C7/12F05D2220/32F04D27/001
Inventor S.阿迪巴特拉
Owner GENERAL ELECTRIC CO
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