CA1049115A - Helicopter blade crack indicator - Google Patents

Helicopter blade crack indicator

Info

Publication number
CA1049115A
CA1049115A CA76264085A CA264085A CA1049115A CA 1049115 A CA1049115 A CA 1049115A CA 76264085 A CA76264085 A CA 76264085A CA 264085 A CA264085 A CA 264085A CA 1049115 A CA1049115 A CA 1049115A
Authority
CA
Canada
Prior art keywords
blade
pressure
output
providing
radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA76264085A
Other languages
English (en)
French (fr)
Inventor
Samuel C. Dominey
John J. Mahoney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tyco International Ltd
Original Assignee
Tyco Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Laboratories Inc filed Critical Tyco Laboratories Inc
Application granted granted Critical
Publication of CA1049115A publication Critical patent/CA1049115A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/006—Safety devices
    • B64C27/007—Safety devices adapted for detection of blade cracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Geophysics And Detection Of Objects (AREA)
CA76264085A 1975-11-14 1976-10-25 Helicopter blade crack indicator Expired CA1049115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/631,833 US3985318A (en) 1975-11-14 1975-11-14 Helicopter blade crack indicator

Publications (1)

Publication Number Publication Date
CA1049115A true CA1049115A (en) 1979-02-20

Family

ID=24532953

Family Applications (1)

Application Number Title Priority Date Filing Date
CA76264085A Expired CA1049115A (en) 1975-11-14 1976-10-25 Helicopter blade crack indicator

Country Status (10)

Country Link
US (1) US3985318A (Direct)
JP (1) JPS5924039B2 (Direct)
AU (1) AU500224B2 (Direct)
BE (1) BE847578A (Direct)
CA (1) CA1049115A (Direct)
DE (1) DE2643826A1 (Direct)
FR (1) FR2331787A1 (Direct)
GB (1) GB1518059A (Direct)
IL (1) IL50745A (Direct)
IT (1) IT1074961B (Direct)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010708A (en) * 1975-12-02 1977-03-08 Trodyne Corporation Differential pressure indicator including remote sensing means
GB1514347A (en) * 1976-03-05 1978-06-14 Westland Aircraft Ltd Helicopter rotors
US4106332A (en) * 1977-04-04 1978-08-15 Textron, Inc. Recording monitor for structure faults
US4104906A (en) * 1977-04-04 1978-08-08 Continental Oil Company Early crack detection with multi-pressure system
DE2936761C2 (de) * 1979-09-12 1984-07-12 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Kontrollsystem zur Überwachung von unter Gasdruck stehenden Rotorblättern
US4447388A (en) * 1981-11-30 1984-05-08 The United States Of America As Represented By The United States Department Of Energy Bolt failure detection
USD290596S (en) 1984-07-12 1987-06-30 Schramm Buford J Helicopter
US4727251A (en) * 1986-02-24 1988-02-23 General Nucleonics, Inc. Detector for helicopter blade crack indicator
US4717907A (en) * 1986-03-10 1988-01-05 Arinc Research Corporation Remote parameter monitoring system with location-specific indicators
GB8815826D0 (en) * 1988-07-04 1988-08-10 Westland Helicopters Method & apparatus for detecting cracks
US5201830A (en) * 1990-03-15 1993-04-13 Braswell Marion M System for controlling ambient pressure within an enclosed environment
US5205710A (en) * 1991-04-04 1993-04-27 The United States Of America As Represented By The Secretary Of The Air Force Helicopter blade crack detection system
WO1993001977A1 (en) * 1991-07-16 1993-02-04 James Bertram King In-flight aircraft monitoring system
US6298712B1 (en) * 1999-07-14 2001-10-09 Hickok Incorporated Fuel cap tester
DE19944412C2 (de) * 1999-09-16 2001-07-26 Eurocopter Deutschland Hohlwelle als Rotormast eines Hubschraubers
US6756908B2 (en) * 2001-12-28 2004-06-29 United Technologies Corporation Crack detection in fracture-critical machine parts
US7464585B2 (en) * 2005-07-21 2008-12-16 United Technologies Corporation Method and apparatus for sensing integrity degradation in turbine engine components
US7162373B1 (en) 2005-11-21 2007-01-09 General Electric Company Method and system for assessing life of cracked dovetail in turbine
DE102006037869A1 (de) * 2006-08-11 2008-02-14 Eads Deutschland Gmbh Strukturbauteil aus kohlefaserverstärktem Kunststoff (CFK) mit integrierter Antenne
WO2008061313A1 (en) * 2006-11-24 2008-05-29 Mems-Id Pty Ltd Tagging methods and apparatus
US7559250B2 (en) 2007-09-27 2009-07-14 Caterpillar Inc. Frame crack detection method
KR100954157B1 (ko) * 2007-12-21 2010-04-20 한국항공우주연구원 터보기계 블레이드 파손 모니터링 유닛 및 이를 갖는 터보장치
EP2124171B1 (en) 2008-05-22 2012-08-01 Bluechiip Ltd Tagging methods and apparatus
ITMI20121320A1 (it) * 2012-07-27 2014-01-28 Eng Service S R L Metodo ed apparato per l'esecuzione di prove di tenuta su pale di elicottero
US20140219793A1 (en) * 2012-10-11 2014-08-07 United Technologies Corporation Health monitoring for hollow blades
GB201311072D0 (en) 2013-06-21 2013-08-07 Rolls Royce Deutschland & Co Kg An accessory mounting for a gas turbine engine
US9823345B2 (en) * 2014-04-24 2017-11-21 Green Power Monitoring Systems, LLC System and method for determining helicopter rotor blade performance
CN108760187B (zh) * 2018-06-29 2021-01-22 江苏金风科技有限公司 叶片开裂状态监测方法、监测系统及叶片
CN109854460A (zh) * 2019-03-28 2019-06-07 米建军 风机叶片检测方法及装置
US12122507B2 (en) * 2021-06-22 2024-10-22 Lockheed Martin Corporation Real time rotor head moment measurement, control, and limiting

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745969A (en) * 1951-10-25 1956-05-15 Tech Studien Ag Turbo-machines
US3158028A (en) * 1960-09-19 1964-11-24 Industrial Nucleonics Corp Physical condition measuring systems
US3161774A (en) * 1961-01-30 1964-12-15 Honeywell Inc Pulse converter control apparatus
US3113464A (en) * 1961-07-28 1963-12-10 Meyer B Shulman Radio active transducer
FR1358794A (fr) * 1963-05-29 1964-04-17 United Aircraft Corp Système de contrôle de pales
US3515485A (en) * 1966-12-29 1970-06-02 Boeing Co Blade tracking system
US3801787A (en) * 1970-01-21 1974-04-02 E Johnsen Valve for radiation detection of low pressure in pneumatic tires
US3739376A (en) * 1970-10-12 1973-06-12 Trodyne Corp Remote monitor and indicating system
US3667862A (en) * 1970-12-09 1972-06-06 Boeing Co Blade inspection system and method
US3677218A (en) * 1971-02-22 1972-07-18 United Aircraft Corp Fluid pressure variation sensor and indicator
FR2188832A5 (Direct) * 1972-06-05 1974-01-18 Boeing Co

Also Published As

Publication number Publication date
BE847578A (fr) 1977-02-14
DE2643826A1 (de) 1977-05-18
FR2331787A1 (fr) 1977-06-10
JPS5262899A (en) 1977-05-24
DE2643826C2 (Direct) 1987-10-15
JPS5924039B2 (ja) 1984-06-06
FR2331787B1 (Direct) 1982-07-09
IL50745A0 (en) 1976-12-31
IL50745A (en) 1978-06-15
GB1518059A (en) 1978-07-19
AU1863076A (en) 1978-04-20
US3985318A (en) 1976-10-12
IT1074961B (it) 1985-04-22
AU500224B2 (en) 1979-05-17

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