CA972738A - Rotary wing aircraft rotor with vibration absorber - Google Patents

Rotary wing aircraft rotor with vibration absorber

Info

Publication number
CA972738A
CA972738A CA184,004A CA184004A CA972738A CA 972738 A CA972738 A CA 972738A CA 184004 A CA184004 A CA 184004A CA 972738 A CA972738 A CA 972738A
Authority
CA
Canada
Prior art keywords
vibration absorber
wing aircraft
rotary wing
aircraft rotor
rotor
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
CA184,004A
Other languages
English (en)
Other versions
CA184004S (en
Inventor
David E.H. Balmford
James E. Saunders
Noel Mills
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.)
Westland Group PLC
Original Assignee
Westland Aircraft Ltd
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 Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Application granted granted Critical
Publication of CA972738A publication Critical patent/CA972738A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/50—Vibration damping features

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vibration Prevention Devices (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Vibration Dampers (AREA)
CA184,004A 1972-11-06 1973-10-23 Rotary wing aircraft rotor with vibration absorber Expired CA972738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5108872A GB1445686A (en) 1972-11-06 1972-11-06 Vibration absorbing systems

Publications (1)

Publication Number Publication Date
CA972738A true CA972738A (en) 1975-08-12

Family

ID=10458613

Family Applications (1)

Application Number Title Priority Date Filing Date
CA184,004A Expired CA972738A (en) 1972-11-06 1973-10-23 Rotary wing aircraft rotor with vibration absorber

Country Status (7)

Country Link
US (1) US3887296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA972738A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2354973A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2205640A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1445686A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN138438B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT996371B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988073A (en) * 1975-04-11 1976-10-26 United Technologies Corporation Spherical bifilar tuning pin bushing
US3988074A (en) * 1975-11-13 1976-10-26 United Technologies Corporation Anhedral bifilar
US4057363A (en) * 1975-11-20 1977-11-08 United Technologies Corporation Extended arm bifilar and method to eliminate second order vibration excitation
US4239455A (en) * 1978-09-11 1980-12-16 Textron, Inc. Blade-mounted centrifugal pendulum
DE3226152C2 (de) * 1982-07-13 1984-07-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Pendelanordnung zur Dämpfung bzw. Tilgung niedriger Anregungsfrequenzen eines Hubschrauberrotorblattes o.dgl.
DE3344724A1 (de) * 1983-12-10 1985-06-20 Klug, Johann Schwungrad
NL1005000C2 (nl) * 1997-01-14 1998-07-15 Aerpac Special Products B V Windturbine.
PT1101034E (pt) * 1998-07-28 2005-08-31 Neg Micon As Pa de turbina eolica com um meio de amortecimento de oscilacoes em forma de u
US6493689B2 (en) * 2000-12-29 2002-12-10 General Dynamics Advanced Technology Systems, Inc. Neural net controller for noise and vibration reduction
FR2894040B1 (fr) * 2005-11-28 2011-10-21 Eurocopter France Dispositif d'asservissement pour un vibrateur a rotors desequilibres.
CN107148383B (zh) * 2016-05-31 2019-03-08 深圳市大疆创新科技有限公司 无人飞行器的机架及无人飞行器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353681A (en) * 1939-11-03 1944-07-18 United Aircraft Corp Propeller hub damper
US2349187A (en) * 1941-03-08 1944-05-16 Westinghouse Electric & Mfg Co Vibration dampener
US2462961A (en) * 1945-01-24 1949-03-01 United Aircraft Corp Propeller blade vibration absorber
US2462962A (en) * 1945-09-26 1949-03-01 United Aircraft Corp Blade vibration absorber
US3540809A (en) * 1968-09-20 1970-11-17 United Aircraft Corp Vibration damped helicopter rotor

Also Published As

Publication number Publication date
IT996371B (it) 1975-12-10
FR2205640A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-05-31
DE2354973A1 (de) 1974-07-18
US3887296A (en) 1975-06-03
IN138438B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-01-31
GB1445686A (en) 1976-08-11

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