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Aircraft engine acoustic liner and method of making the same

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B63H-011/10
  • F02K-001/00
출원번호 US-0824432 (2001-04-02)
발명자 / 주소
  • William H. Hogeboom
  • Gerald W. Bielak
출원인 / 주소
  • The Boeing Company
인용정보 피인용 횟수 : 21  인용 특허 : 29

초록

A middle layer (22) having partitioned cavities (28) is sandwiched between an imperforate sheet (24) and an optional perforate sheet (26) to form a low resistance acoustic liner (22). A preferred method of manufacture of the low resistance acoustic liner (20) uses aspects of the buried septum techni

대표청구항

1. A turbofan aircraft engine airflow duct having at least one acoustic liner material therein adapted for attenuating engine noise, wherein at least a portion of the liner is comprised of annular rings of at least two different materials, that are positioned in the airflow duct so that they alterna

이 특허에 인용된 특허 (29)

  1. Parente Charles A. (Oyster Bay NY) Westerback Sonya J. (North Bellmore NY), Acoustic attenuating liner and method of making same.
  2. Koss ; Muriel L., Acoustical laminate.
  3. Dougherty Robert P. (Bellevue WA), Apparatus and method for reducing noise emissions from a gas turbine engine inlet.
  4. Vasiljevic Costa Silard (Hausserstr. 114 7400 Tubingen DT), Arrangement for damping sound with resonators.
  5. Lyons Harold D. (Spartanburg SC), Breathable leather-like materials and process for making same.
  6. Hillinger Brad O. (3504-½Manhattan Ave. Manhattan Beach CA 90266), Composite structure.
  7. Nelsen Murray D. (Goddard KS) Kunze ; Jr. Robert K. (Wichita KS) Olsen Robert F. (Woodinville WA) Rushwald Ira B. (Seattle WA), High efficiency broadband acoustic resonator and absorption panel.
  8. Harp Marlyn F. (Winfield KS) Diepenbrock ; Jr. James L. (Wichita KS) Nelsen M. Dean (Wichita KS), Honeycomb core with internal septum and method of making same.
  9. Beggs, Stanley L.; Riel, Frank J.; Lawson, Dale W. R., Honeycomb noise attenuation structure.
  10. Rose Philip M. (Chula Vista CA) Yu Jia (San Diego CA), Honeycomb noise attenuation structure.
  11. Baba Takeaki (Chofu JPX) Nanba Keizo (Nagoya JPX) Takeshima Yoshio (Ueno JPX) Sano Hiromichi (Chiryu JPX) Tobita Koji (Hiroshima JPX) Muneto Atsuo (Hiroshima JPX) Hara Toshihiro (Hiroshima JPX) Fujis, Honeycomb panel structure.
  12. Belko Raymond P. (Blackwood NJ), Honeycomb structure end closure.
  13. Newton Jefferson F. (Seattle WA) Martin Thomas D. (Bellevue WA) Westre Willard N. (Bellevue WA) Carbery David J. (Vashon Island WA) Ikegami Roy (Seattle WA), Lightweight honeycomb panel structure.
  14. Diepenbrock ; Jr. James L. (Wichita KS) Nelsen M. Dean (Goddard KS) Harp Marlyn F. (Winfield KS), Method of making a cellular core with internal septum.
  15. Blair Winford (La Mesa CA), Method of manufacture of honeycomb noise attenuation structure for high temperature applications.
  16. Cook ; Jr. ; William H., Method of manufacturing structural honeycomb with integral heat radiation shields, and the resulting product thereof.
  17. Norton ; Richard V., Method of preparing honeycomb insulation structure.
  18. Schindler Guenter M. (Palos Verdes CA), Multi-layered acoustic liner.
  19. Ingard Uno (Kittery Point ME) Morgan James A. (Wyckoff NJ) Hirschorn Martin (New York NY), Packless silencer.
  20. Landi Curtis L. (Sunnyvale CA) Wilson Susan L. (Sunnyvale CA), Perforated honeycomb.
  21. Carr Thomas W. (Chula Vista CA) Rose Philip M. (Chula Vista CA) Marsh Alan H. (Huntington Beach CA), Quiet nacelle system and hush kit.
  22. Arcas Noe (Plainview NY) Parente Charles A. (Oyster Bay NY), Segmented resistance acoustic attenuating liner.
  23. Saylor ; Charles J. ; Haworth ; Richard G. ; Yerges ; Lyle F., Sound absorbing panel.
  24. Saylor ; Charles J. ; Haworth ; Richard G. ; Yerges ; Lyle F., Sound absorbing panel.
  25. Cook Billy G. (Chula Vista CA), Sound attenuating structural honeycomb sandwich material.
  26. Ely Richard A. (Dallas TX) McClaren ; III Sherwood W. (Grand Prairie TX), Sound attenuating structural panel.
  27. Riel Frank J. (San Diego CA), Sound attenuation sandwich panel including barrier material for corrosion control.
  28. Zalas John M. (Erie PA), Sound-absorbing panel.
  29. Wagenfeld Robert E. (New York NY), System for reducing aircraft noise and hush kit.

이 특허를 인용한 특허 (21)

  1. Marze, Henri-James, Absorbent structure for attenuating noise particular by a rotor-generator noise, and a rotor duct including such a structure.
  2. Gilson, Jonathan; Baltas, Constantine, Acoustic liner with varied properties.
  3. Napier, James C., Air inlet noise attenuation assembly.
  4. Patrick,William P., Anechoic visco-thermal liner.
  5. Nguyen, Phuong H.; Sikora, Joseph A.; Campbell, Thomas A., Automatic control systems for aircraft auxiliary power units, and associated methods.
  6. Nguyen, Phuong H.; Sikora, Joseph A.; Campbell, Thomas A., Automatic control systems for aircraft auxiliary power units, and associated methods.
  7. Nguyen,Phuong H.; Sikora,Joseph A.; Campbell,Thomas A., Automatic control systems for aircraft auxiliary power units, and associated methods.
  8. Campbell, Thomas A.; Chambers, David S.; Willie, Robert H.; Rust, Charles W., Dual flow APU inlet and associated systems and methods.
  9. Campbell,Thomas A.; Chambers,David S.; Willie,Robert H.; Rust,Charles W., Dual flow APU inlet and associated systems and methods.
  10. Sternberger, Joe Everet; Gallman, Judith Marie, Engine inlet varying impedance acoustic liner section.
  11. Johnson, Jeffrey Don, Honeycomb core acoustic unit with metallurgically secured deformable septum, and method of manufacture.
  12. Bayliss, Andrew J.; Paterson, John T.; Retz, Kevin, Independent power generation in aircraft.
  13. Bayliss, Andrew J.; Paterson, John T.; Retz, Kevin, Independent power generation in aircraft.
  14. Campbell,Thomas A.; Voll,William A.; Diamond,John A., Integrated axially varying engine muffler, and associated methods and systems.
  15. Ertz, Timothy; Royalty, Chuck; Sheoran, Yogendra Yogi, Integrated tailcone muffler assemblies and methods.
  16. Chiou, Song; Yu, Jia; Hubert, Claude; Layland, Michael; Kwan, Hwa-Wan, Linear acoustic liner.
  17. Nonogi, Mari; Sasaki, Makoto; Noro, Tetsuya, Multilayer sound absorbing structure comprising mesh layer.
  18. Varanasi, Satya Surya Srinivas; Khandelwal, Somesh; Siegmund, Thomas; Bolton, John Stuart; Cipra, Raymond J., Sound barrier systems.
  19. Zielinski, Edward; Bernier, Alan T.; Knechtel, Kent W.; Campbell, Thomas A.; White, Jeffrey J.; Ralston, Mark D., Systems and methods for starting aircraft engines.
  20. Lwasa, Ronald M.; Chow, Allen D., Thermally compliant APU exhaust duct arrangements and associated systems and methods.
  21. Karimi, Kamiar J.; Liu, Shengyi; Liffring, Mark E.; Helton, Steven B.; Fu, Sheau-Wei (Johnny), Vehicle electrical power management and distribution.
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