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특허 상세정보

Approach to extending life of gas turbine engine

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02C-009/52    F02C-009/00   
미국특허분류(USC) 060/039.281
출원번호 US-0522271 (2006-09-15)
등록번호 US-7290385 (2007-11-06)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 0  인용 특허 : 14

Apparatus and methods are disclosed for increasing lifetimes of components in a gas turbine engine. Ordinarily, components are replaced after they experience a certain number of thermal cycles, or a certain operating temperature limit is exceeded. Under one form of the invention, the components are not replaced at that time, but are subjected to increased cooling, which decreases the highest temperature reached in subsequent thermal cycles. Also, many components are replaced when acceleration of an engine falls below a target. In one form of the inventio...


The invention claimed is: 1. A system, comprising: a) a gas turbine engine in which fuel flow is controlled according to one, or more, fuel schedules; b) a testing system for ascertaining whether engine acceleration controlled by a given fuel schedule meets a target acceleration and, if not, raising the given fuel schedule for subsequent accelerations. 2. A system according to claim 1, and further comprising: c) a system for reducing decrease in stall margin caused by the raising of the given fuel schedule in subsequent accelerations if the target ac...

이 특허에 인용된 특허 (14)

  1. Uram Robert (East Pittsburgh PA). Accurate, stable and highly responsive gas turbine startup speed control with fixed time acceleration especially useful. USP1977034010605.
  2. Meisner, Richard. Adaptive acceleration schedules for gas turbine engine control systems. USP2004116820429.
  3. Sweet David H. (Tequesta FL) Evans Charles W. (Norfolk CT). Automatic turbine engine bleed valve control for enhanced fuel management. USP1994055313778.
  4. Hutto ; Jr. Walter D. (Cincinnati OH) Stockton William W. (Cincinnati OH). Back-up control system for F101 engine and its derivatives. USP1989014794755.
  5. Lowry William C. (West Chester OH) Phipps William L. (Cincinnati OH). Compressor bleed biased acceleration schedule. USP1980024186556.
  6. Pisano, Alan David; Conaty, James Patrick; Wiseman, Matthew William; Sequeira, Sabrina Anne. Control strategy for gas turbine engine. USP2003096625987.
  7. Rowe Arthur L,GB2 ; Kurz Nikolaus,DEX. Control system for a ducted fan gas turbine engine. USP1999035887419.
  8. Irwin Craig W. ; Khalid Syed J.. Controlling stall margin in a gas turbine engine during acceleration. USP2000126164902.
  9. Kurosawa Soichi (Hitachi JPX) Kumata Kazuhiko (Katsuta JPX). Cooling air flow controlling apparatus for gas turbine. USP1988084767259.
  10. Hawes David J. (Pierrefonds CAX). Method and apparatus for acceleration limiting a gas turbine engine. USP1986064593523.
  11. Putman Robert L. (Palm City FL) Hovan Edward J. (Manchester CT). Method for maintaining blade tip clearance. USP1989084856272.
  12. Schwarz Frederick M. (Glastonbury CT) Crawley ; Jr. Clifton J. (Glastonbury CT) Rauseo Anthony F. (Middletown CT). Method of restoring exhaust gas temperature margin in a gas turbine engine. USP1992015081830.
  13. Elsaesser ; Fred L. ; Hall ; Joseph H.. Stall detector for gas turbine engine. USP1978104117668.
  14. Weimer Matthew M. (Indianapolis IN) Jaeger Joseph A. (Greenwood IN). System for detecting and accommodating gas turbine engine fan damage. USP1997045622045.