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특허 상세정보

Internally damped blades

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01D-005/10    F01D-005/26   
미국특허분류(USC) 416/145 ; 416/500
출원번호 US-0822270 (1992-01-17)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 29  인용 특허 : 0
초록

A twisted compressor or fan hollow blade is damped by an internal loose slug. The slug contacts the skin of the blade at two transversely spaced locations. This slug is located with its center of gravity eccentric of a radial line through the contact location.

대표
청구항

A twisted hollow fan or compressor airfoil blade extending radially from a rotor shaft comprising: a plurality of internal chambers within said blade, each chamber bounded by the blade skin on two sides, a circumferentially extending outboard section, an inboard section and two radially extending end sections; and a slug located within at least one of said chambers, said slug under the influence of centrifugal force in contact with said outboard section at an outboard contact location and one of said skins at a skin contact location, said contact with on...

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  2. Lewis, Thomas M.; Parin, Michael L.. Air-film vibration damping apparatus for windows. USP2014108851423.
  3. Houston, David P.; Propheter-Hinckley, Tracy A.; Fisk, Benjamin T.; Tracy, Anita L.. Airfoil including loose damper. USP20181210151204.
  4. El-Aini, Yehia M.; Montgomery, Stuart K.. Airfoil tip shroud damper. USP2012018105039.
  5. Kraft Robert J. ; McClelland Robert J.. Airfoil vibration damping device. USP1998105820343.
  6. Propheter-Hinckley, Tracy A.; Dolansky, Gregory M.; Fisk, Benjamin T.; Treen, Robert J.. Airfoil with powder damper. USP2015119181806.
  7. Bauer, Randall Charles; Patrick, D. Keith. Bimaterial turbine blade damper. USP2010117824158.
  8. Busbey,Bruce Clark; Weaver,Matthew Mark; Garay,Gregory Terrence. Bipedal damper turbine blade. USP2008087413405.
  9. Wygant, Karl. Blade assembly. USP20190210215029.
  10. Villhard, Robert L.. Blades having coolant channels lined with a shape memory alloy and an associated fabrication method. USP2004036699015.
  11. El-Aini, Yehia M.; Mitchell, William S.; Roberts, Lawrence P.; Montgomery, Stuart K.; Davis, Gary A.. Damping device for a stationary labyrinth seal. USP2010107806410.
  12. Bonnet, Laurent. Damping element for a wind turbine rotor blade. USP2010107811063.
  13. Mannava Seetharamaiah ; Cowie William D. ; Yeaton Robert L.. Gas turbine engine airfoil damper and method for production. USP2000126155789.
  14. Nash, Grant. Method and apparatus for reducing noise transmission through a window. USP2017059645120.
  15. Siegfriedsen, Sonke. Method for operating offshore wind turbine plants based on the frequency of their towers. USP2005056891280.
  16. Villhard, Robert L.. Method of fabricating a shape memory alloy damped structure. USP2005056886622.
  17. El-Aini, Yehia M.; Klein, Myron L.. Non-integral platform and damper for an airfoil. USP2011118066479.
  18. Propheter-Hinckley, Tracy A.; Pietraszkiewicz, Edward F.; Gautschi, Steven Bruce. Reinforced airfoils. USP2010127857588.
  19. Hartung, Andreas. Rotor blade arrangement for a turbo machine. USP2016069371733.
  20. Duffy, Kirsten P.; Brown, Gerald V.; Bagley, Ronald L.. Self-tuning impact damper for rotating blades. USP2004126827551.
  21. Miller, Jeff Harley; Davis, Gary Alan. Split blade frictional damper. USP2004066752594.
  22. Davis, Gary A.; Tuttle, Gary E.. Turbine blade assembly with pin dampers. USP2004016676380.
  23. Davis, Gary A.; Tuttle, Gary E.; Beatty, Robert F.. Turbine blade assembly with stranded wire cable dampers. USP2004026685435.
  24. Garner,Chad M.. Turbine blade with vibration damper. USP2007097270517.
  25. Saito, Eiji; Namura, Kiyoshi; Yamashita, Yutaka; Takasumi, Masakazu; Yamazaki, Yoshiaki; Shikano, Yoshio; Ikeuchi, Kazuo; Katayose, Masumi. Turbine bucket. USP2005016846160.
  26. Lewis, Thomas M.; Jones, David I. G.. Turbine engine damper. USP2003026514040.
  27. Stiehler, Frank; Hartung, Andreas. Turbomachine blade. USP2017129840916.
  28. Stiehler, Frank; Hartung, Andreas. Turbomachine blade. USP2017099765625.
  29. Lewis, Thomas M.; Parin, Michael L.. Vibration damping apparatus for windows using viscoelastic damping materials. USP2010057721844.