FR3062112B1 - AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM - Google Patents

AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM Download PDF

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Publication number
FR3062112B1
FR3062112B1 FR1700073A FR1700073A FR3062112B1 FR 3062112 B1 FR3062112 B1 FR 3062112B1 FR 1700073 A FR1700073 A FR 1700073A FR 1700073 A FR1700073 A FR 1700073A FR 3062112 B1 FR3062112 B1 FR 3062112B1
Authority
FR
France
Prior art keywords
friction
friction force
threshold
shock absorber
force
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.)
Active
Application number
FR1700073A
Other languages
French (fr)
Other versions
FR3062112A1 (en
Inventor
Lacroix Pierre Prud'homme
Remy Elian Arnaud
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.)
Airbus Helicopters SAS
Original Assignee
Airbus Helicopters SAS
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 Airbus Helicopters SAS filed Critical Airbus Helicopters SAS
Priority to FR1700073A priority Critical patent/FR3062112B1/en
Publication of FR3062112A1 publication Critical patent/FR3062112A1/en
Application granted granted Critical
Publication of FR3062112B1 publication Critical patent/FR3062112B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
    • 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 
    • B64C25/52—Skis or runners
    • 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
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
    • 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 
    • B64C2025/325—Alighting gear characterised by elements which contact the ground or similar surface  specially adapted for helicopters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

La présente invention concerne un atterrisseur pour aéronef comportant au moins un dispositif d'atterrissage muni d'un amortisseur (11) et d'un système écrêteur d'effort à friction (1). Ledit système écrêteur d'effort à friction (1) comporte un dispositif d'absorption d'énergie (2) susceptible de se déformer en compression sous l'application d'une force supérieure à un seuil de déformation (F1), un support (3) auquel est lié ledit dispositif d'absorption d'énergie (2) et un dispositif de friction (4) agencé entre ledit support (3) et ledit amortisseur (11). Ledit dispositif de friction (4) génère un effort de friction (F2) de sorte que ledit dispositif d'absorption d'énergie (2) se déforme lorsqu'un effort T en compression supérieur à un seuil de glissement (F3) égal à la somme dudit seuil de déformation (F1) et dudit seuil de friction (F2) est appliqué audit système écrêteur d'effort à friction (1) provoquant un déplacement relatif entre ledit support (3) et ledit amortisseur (11).The present invention relates to a landing gear for an aircraft comprising at least one landing device provided with a shock absorber (11) and a friction force reduction system (1). Said friction force limiting system (1) comprises an energy absorption device (2) capable of deforming in compression under the application of a force greater than a deformation threshold (F1), a support ( 3) to which said energy absorption device (2) and a friction device (4) arranged between said support (3) and said shock absorber (11) are linked. Said friction device (4) generates a friction force (F2) so that said energy absorption device (2) deforms when a compressive force T greater than a sliding threshold (F3) equal to the sum of said deformation threshold (F1) and said friction threshold (F2) is applied to said friction force-capping system (1) causing a relative movement between said support (3) and said shock absorber (11).

FR1700073A 2017-01-26 2017-01-26 AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM Active FR3062112B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1700073A FR3062112B1 (en) 2017-01-26 2017-01-26 AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1700073 2017-01-26
FR1700073A FR3062112B1 (en) 2017-01-26 2017-01-26 AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM

Publications (2)

Publication Number Publication Date
FR3062112A1 FR3062112A1 (en) 2018-07-27
FR3062112B1 true FR3062112B1 (en) 2023-10-20

Family

ID=58358703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1700073A Active FR3062112B1 (en) 2017-01-26 2017-01-26 AIRCRAFT LANDER COMPRISING A FRICTION FORCE COVERING SYSTEM

Country Status (1)

Country Link
FR (1) FR3062112B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11332238B2 (en) 2020-03-22 2022-05-17 Aurora Flight Sciences Corporation Energy absorbing landing gear system for a vertical landing apparatus and method of using the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB709080A (en) * 1952-01-01 1954-05-12 Jerzy Dabrowski Improvements in or relating to frictional shock absorbers or dampers
US3265163A (en) * 1964-03-05 1966-08-09 Bendix Corp Shock absorber
US3682463A (en) * 1969-08-16 1972-08-08 Dornier System Gmbh Progressively-acting shock absorber element
FR2608242B1 (en) * 1986-12-12 1989-03-31 Aerospatiale SHOCK ABSORBER, CYLINDER PLUG COMPRISING SAME, AND LANDING GEAR EQUIPPED WITH SUCH A PLUG
ITMI20130604A1 (en) * 2013-04-12 2014-10-13 Sia Aerospace S R L SHOCK ABSORBER DEVICE, PARTICULARLY FOR AIRCRAFT
FR3034076B1 (en) * 2015-03-25 2017-04-07 Airbus Helicopters AIRCRAFT AND LANDING TRAIN PROVIDED WITH AT LEAST ONE PAIR OF SHOCK ABSORBERS, AND METHOD IMPLEMENTED BY SAID TRAIN

Also Published As

Publication number Publication date
FR3062112A1 (en) 2018-07-27

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