GB531168A - Improvements in and relating to spring struts for aircraft - Google Patents

Improvements in and relating to spring struts for aircraft

Info

Publication number
GB531168A
GB531168A GB25579/38A GB2557938A GB531168A GB 531168 A GB531168 A GB 531168A GB 25579/38 A GB25579/38 A GB 25579/38A GB 2557938 A GB2557938 A GB 2557938A GB 531168 A GB531168 A GB 531168A
Authority
GB
United Kingdom
Prior art keywords
tube
space
strut
piston
ring
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
GB25579/38A
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.)
ELEKTRONI CO M B H
Original Assignee
ELEKTRONI CO M B H
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 ELEKTRONI CO M B H filed Critical ELEKTRONI CO M B H
Publication of GB531168A publication Critical patent/GB531168A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/58—Arrangements or adaptations of shock-absorbers or springs
    • B64C25/60—Oleo legs
    • 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
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/20—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with the piston-rod extending through both ends of the cylinder, e.g. constant-volume dampers
    • 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
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/516—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement

Landscapes

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

Abstract

531,168. Hydraulic shock-absorbers. ELEKTRON CO., GES. Sept. 1, 1938, No. 25579. Convention date, Oct. 25, 1937. [Class 108 (iii)] In a spring strut for aircraft comprising two telescopic tubes, provided with fluid damping means and mechanical springing means, only the annular space between the tubes and the members guiding one tube within the other contains the damping fluid, and a throttle device, including an annular piston and additional throttling parts and having a different action for inward and outward movements, is provided within the space. In one form, Fig. 1, the strut comprises helical springs 3, 4 guided by outer and inner tubes 1, 2, the tube 2 sliding in guides 5, 6, fixed to the tube 1, and forming between them and the wall of the outer tube an annular space 7 which is filled with damping liquid. The tube 2 carries rings 9, 10, Fig. 4, between which is provided a floating piston 8 apertured at 20 and having considerable clearance within the tube 2. The ring 10 is provided with sector shaped recesses 22 so that when the strut is compressed and the piston 8 bears against the ring 10, fluid flows through the apertures 20 and the clearance space 21. The ring 9 is not recessed, so that, when the strut extends, fluid flows through the apertures 20 only. In another form, Fig. 2, the annular space is divided into a working space 7 and storage space 12 separated by partitions 14 having passages 15 controlled by an intermediate ring 13, the arrangement being such that fluid can flow from the space 12 only during extension of the strut. The piston 8 carries a throttle device, in the form of a valve plate 16, having a different action for inward and outward movement. The guiding and packing members for the tube 2 may be adapted to be inserted from one end in the tube 1 and secured by screw means at the end of the tube, the members being supported from each other by a distance tube.
GB25579/38A 1937-10-25 1938-09-01 Improvements in and relating to spring struts for aircraft Expired GB531168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE531168X 1937-10-25

Publications (1)

Publication Number Publication Date
GB531168A true GB531168A (en) 1940-12-31

Family

ID=6554825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25579/38A Expired GB531168A (en) 1937-10-25 1938-09-01 Improvements in and relating to spring struts for aircraft

Country Status (1)

Country Link
GB (1) GB531168A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661203A (en) * 1950-06-29 1953-12-01 Glenn L Martin Co Shock absorbing drag strut for aircraft landing gears
US3112102A (en) * 1961-11-02 1963-11-26 Messerschmitt Ag Telescopic strut
US3207498A (en) * 1962-07-19 1965-09-21 Stabilus Ind Handels Gmbh Gas spring
ITTO20110146A1 (en) * 2011-02-21 2012-08-22 Cnh Italia Spa HYDRAULIC SHOCK ABSORBER

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661203A (en) * 1950-06-29 1953-12-01 Glenn L Martin Co Shock absorbing drag strut for aircraft landing gears
US3112102A (en) * 1961-11-02 1963-11-26 Messerschmitt Ag Telescopic strut
US3207498A (en) * 1962-07-19 1965-09-21 Stabilus Ind Handels Gmbh Gas spring
ITTO20110146A1 (en) * 2011-02-21 2012-08-22 Cnh Italia Spa HYDRAULIC SHOCK ABSORBER

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