GB787848A - Improvements in vibration dampers - Google Patents

Improvements in vibration dampers

Info

Publication number
GB787848A
GB787848A GB3085354A GB3085354A GB787848A GB 787848 A GB787848 A GB 787848A GB 3085354 A GB3085354 A GB 3085354A GB 3085354 A GB3085354 A GB 3085354A GB 787848 A GB787848 A GB 787848A
Authority
GB
United Kingdom
Prior art keywords
segments
piston
cone
friction
cage
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
GB3085354A
Inventor
Kenneth Watson
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.)
SAUNDERS ROE Ltd
Original Assignee
SAUNDERS ROE 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 SAUNDERS ROE Ltd filed Critical SAUNDERS ROE Ltd
Priority to GB3085354A priority Critical patent/GB787848A/en
Priority to DES47222A priority patent/DE1037272B/en
Publication of GB787848A publication Critical patent/GB787848A/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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
    • F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/008—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft characterised by vibration absorbing or balancing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/51—Damping of blade movements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

787,848. Friction-type vibration dampers. SAUNDERS-ROE, Ltd. Oct. 4, 1955 [Oct. 26, 1954], No. 30853/54. Class 108(3) [Also in Group XXXIII] The invention relates to a helicopter rotor (see Group XXXIII) in which movement of the blades about their drag hinges is restrained by damping units each of which combines the actions of a snubber strut and a friction damper. As shown, two sets of friction segments 21 21A are pivotally connected to respective flanges of a piston 118. A cone 25 acts via hardened steel balls 23, carried in a cage 24, on a conical bore defined by the set of segments 21. A rubber spring 26 is interposed between a flange 27 rigid with the piston 118 and the cone 25. The cage has lugs which enter spaces between adjacent segments (Fig. 2, not shown). A similar cone 25A acts on the segments 21A under the action of a flange 27A rigid with the piston rod 19. Under no-load, the segments 21 and 21A are parallel with the wall of an outer cylinder 16 and the arrangement is such that there is no damping force for small relative movements between the piston and cylinder. A single acting damper is also described. The springs 26 may alternatively be of metal or may be pneumatic.
GB3085354A 1954-10-26 1954-10-26 Improvements in vibration dampers Expired GB787848A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3085354A GB787848A (en) 1954-10-26 1954-10-26 Improvements in vibration dampers
DES47222A DE1037272B (en) 1954-10-26 1956-01-25 Propeller, especially for helicopters, with friction damper for the pivoting movement of the wing blades in the plane of rotation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3085354A GB787848A (en) 1954-10-26 1954-10-26 Improvements in vibration dampers

Publications (1)

Publication Number Publication Date
GB787848A true GB787848A (en) 1957-12-18

Family

ID=10314155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3085354A Expired GB787848A (en) 1954-10-26 1954-10-26 Improvements in vibration dampers

Country Status (1)

Country Link
GB (1) GB787848A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212584A (en) * 1964-05-28 1965-10-19 United Aircraft Corp Damper and positioner
US3361216A (en) * 1964-04-24 1968-01-02 Westland Aircraft Ltd Damping devices
US3484173A (en) * 1968-12-06 1969-12-16 United Aircraft Corp Double action damper bumper
CN102501970A (en) * 2011-11-15 2012-06-20 中国航空工业集团公司北京航空材料研究院 Band type damper and preparation method thereof
US9352632B2 (en) * 2011-11-16 2016-05-31 Firestone Industrial Products Company, Llc Axial clutch assembly as well as gas spring and gas damper assembly and method including same
EP3263453A1 (en) * 2016-06-29 2018-01-03 Airbus Helicopters A rotor and an aircraft provided with such a rotor
WO2022217789A1 (en) * 2021-04-13 2022-10-20 中国电力科学研究院有限公司 Damping device and design method for damping device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361216A (en) * 1964-04-24 1968-01-02 Westland Aircraft Ltd Damping devices
US3212584A (en) * 1964-05-28 1965-10-19 United Aircraft Corp Damper and positioner
US3484173A (en) * 1968-12-06 1969-12-16 United Aircraft Corp Double action damper bumper
CN102501970A (en) * 2011-11-15 2012-06-20 中国航空工业集团公司北京航空材料研究院 Band type damper and preparation method thereof
CN102501970B (en) * 2011-11-15 2014-12-24 中国航空工业集团公司北京航空材料研究院 Band type damper and preparation method thereof
US9352632B2 (en) * 2011-11-16 2016-05-31 Firestone Industrial Products Company, Llc Axial clutch assembly as well as gas spring and gas damper assembly and method including same
EP3263453A1 (en) * 2016-06-29 2018-01-03 Airbus Helicopters A rotor and an aircraft provided with such a rotor
FR3053312A1 (en) * 2016-06-29 2018-01-05 Airbus Helicopters ROTOR AND AIRCRAFT PROVIDED WITH SUCH A ROTOR
JP2018002136A (en) * 2016-06-29 2018-01-11 エアバス ヘリコプターズ Rotor and aircraft provided with such rotor
US10479492B2 (en) 2016-06-29 2019-11-19 Airbus Helicopters Rotor and an aircraft provided with such a rotor
WO2022217789A1 (en) * 2021-04-13 2022-10-20 中国电力科学研究院有限公司 Damping device and design method for damping device

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