GB796023A - Improvements in or relating to flutter dampers - Google Patents

Improvements in or relating to flutter dampers

Info

Publication number
GB796023A
GB796023A GB716/56A GB71656A GB796023A GB 796023 A GB796023 A GB 796023A GB 716/56 A GB716/56 A GB 716/56A GB 71656 A GB71656 A GB 71656A GB 796023 A GB796023 A GB 796023A
Authority
GB
United Kingdom
Prior art keywords
chambers
lies
limits
plugs
members
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
GB716/56A
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.)
Houdaille Industries Inc
Original Assignee
Houdaille Industries 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 Houdaille Industries Inc filed Critical Houdaille Industries Inc
Publication of GB796023A publication Critical patent/GB796023A/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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/145—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only rotary movement of the effective parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers

Abstract

796,023. Rotary dashpots. HOUDAILLE INDUSTRIES, Inc. Jan. 9, 1956 [Jan. 20, 1955], No. 716/56. Class 108(3) In a rotary dashpot of the type comprising vanes 19 dividing an annular chamber into a plurality of pairs of opposed working chambers 16, 17, in conjunction with fixed radiallydirected abutment members 24, the chambers of each pair being connected by passageways embodying flow restriction means 46, and by passageways leading outwardly through the cylinder wall to a relief valve 60 (Fig. 4). The ratio R2/r lies within the limits 1/40. L/r +.65 and 1/40. L/R +.25, where R1, R2, rand L are as shown in Fig. 1. Moreover R2/R1 lies within the limits .315 log 10 L/R1 + .34 and .315 log 10 L/R1 + .74, and R1/R lies within the limits .9 and .6. There are two vanes 19 and two members 24 resulting in two pairs of chambers 16, 17. The chambers 16, 17 are also connected by a one-way valve 60 (Fig. 4) permitting pressure relief from the chambers 16. A second valve 60a (Fig. 1) permits pressure relief in the reverse direction from the chambers 17. Retaining plugs 67 for the loading springs 64 of the valves 60, 60a, and further plugs 73, are of tin. The members 24 are held rigid with the outer casing 10 of the shock absorber, by means of plugs 22. Liquid in a reservoir 25 is urged by a spring-loaded piston 26 through passages 36 having check valves 37. The restriction means 46 is thermostatically controlled by a bimetallic element 57 adjustable at 55. The dashpot is for damping flutter of aircraft control surfaces. Reference has been directed by the Comptroller to Specification 712,321.
GB716/56A 1954-01-20 1955-01-09 Improvements in or relating to flutter dampers Expired GB796023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US796023XA 1954-01-20 1954-01-20

Publications (1)

Publication Number Publication Date
GB796023A true GB796023A (en) 1958-06-04

Family

ID=22151584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB716/56A Expired GB796023A (en) 1954-01-20 1955-01-09 Improvements in or relating to flutter dampers

Country Status (1)

Country Link
GB (1) GB796023A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004043782A1 (en) * 2002-11-06 2004-05-27 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
US7270321B2 (en) 2002-11-06 2007-09-18 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
CN113900893A (en) * 2021-09-30 2022-01-07 土巴兔集团股份有限公司 Log obtaining method and related equipment thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004043782A1 (en) * 2002-11-06 2004-05-27 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
US7137624B2 (en) 2002-11-06 2006-11-21 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
US7270321B2 (en) 2002-11-06 2007-09-18 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
EP2246254A1 (en) * 2002-11-06 2010-11-03 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
US7931258B2 (en) 2002-11-06 2011-04-26 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
US8740200B2 (en) 2002-11-06 2014-06-03 Lord Corporation Fluid-elastomeric damper assembly including internal pumping mechanism
CN113900893A (en) * 2021-09-30 2022-01-07 土巴兔集团股份有限公司 Log obtaining method and related equipment thereof

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