DE733061C - Retractable landing gear for aircraft - Google Patents

Retractable landing gear for aircraft

Info

Publication number
DE733061C
DE733061C DEO23804D DEO0023804D DE733061C DE 733061 C DE733061 C DE 733061C DE O23804 D DEO23804 D DE O23804D DE O0023804 D DEO0023804 D DE O0023804D DE 733061 C DE733061 C DE 733061C
Authority
DE
Germany
Prior art keywords
strut
aircraft
wheel
retractable
landing gear
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
DEO23804D
Other languages
German (de)
Inventor
Jean Mercier
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.)
Olaer Patent Co
Original Assignee
Olaer Patent Co
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 Olaer Patent Co filed Critical Olaer Patent Co
Application granted granted Critical
Publication of DE733061C publication Critical patent/DE733061C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C25/00Alighting gear
    • B64C25/02Undercarriages
    • B64C25/08Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/14Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like fore-and-aft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Description

Einziehbares Fahrwerk für Flugzeuge Die Erfindung bezieht sich auf ein einziehbares Fahrwerk für Flugzeuge, b@i S:elchem die um eine flugzeugfeste Achse ehiscli:venlbare Radstrebe in der Landestellung durch eine dabei in der Strecklage befindliche Knickstrebe am Flugzeugkörper abgestützt ist und an der Knickstrebe ein-- mit dem oberen Ende an einem flugzeugfesten Punkt angelenkte Einziehstrebe anreift.Retractable landing gear for aircraft The invention relates to a retractable landing gear for airplanes, b @ i S: elchem which is fixed to an airplane Axis ehiscli: foldable wheel strut in the landing position by one in the extended position located buckling strut is supported on the aircraft body and on the buckling strut a - with the upper end hinged to a fixed point on the aircraft attacks.

Es ist bei derartigen Fahrwerken' belzannt, die Einziehstrebe in ziemlich schräger Lage über dem oberen Knickstrebenschenkei, also in verhältnismä5ig großer Entfernung von der Radstrebe anzuordnen, wobei das untere Ende der Einziehstrebe unmittelbar am Knickgelenk der Knickstrebe angreift. Eine solche Anordnung bedingt aber für die Verstellbewegungen des Fahrwerks einen groren Platzbedarf und erfordert lange Einziehstreben mit großer Hublänge.It is' belzannt with such undercarriages, the retractable strut in pretty much inclined position over the upper bent strut leg, i.e. in a relatively large one Distance from the wheel strut, with the lower end of the retractable strut engages directly on the articulation of the buckle strut. Such an arrangement is necessary but a large space requirement and requires for the adjustment movements of the chassis long retractable struts with a large stroke length.

Diesem L"helstand wird nun gemäß der Erfindung bei einem Einziehfahrwerk der beschriebenen Art dadurch abgeholfen, daß das untere Ende der in verhältnismäßig geringer Entfernung annähernd parallel zur Radstrebe um einen oberhalb der Radstrebenschwenkachse liegenden Gelenkpunkt schwenkbar angeordneten Einziehstrebe nzittels je eines Lenkers sowohl mit dem unteren Schenkel der Knickstrebe als auch mit der Radstrebe gelenkig verbunden ist, wobei die unteren An-Ienkpunkte der scherenartig angeordneten Lenlzer nahe dem Anlenkpunkt des unteren j Knickstrebenschenkels an der Radstrebe liegen.This L "helstand is now according to the invention with a retractable landing gear the type described helped that the lower end of the in relatively short distance approximately parallel to the wheel strut around one above the wheel strut pivot axis lying pivot point pivotably arranged retractable strut nzittels each of a link Articulated both with the lower leg of the buckling strut and with the wheel strut is connected, the lower articulation points of the Lenlzer, which are arranged like scissors lie near the point of articulation of the lower leg of the flex strut on the wheel strut.

In der Zeichnung ist die Anwendung der Erfindung bei einem in Flugzeuglängsrichtung einziehbaren Fahrtwerk dargestellt.In the drawing, the application of the invention is in a longitudinal direction of the aircraft retractable landing gear shown.

Die Radstrebe ; ist um eine flugzeugfeste Achse c} einschwenkbar. Die Knickstrebe i-i" ist bei 2 an der Radstrebe 7 und bei 3 am Flugzeugkörper angelenkt. Die Einziehstrebe ,1 ist mit ihrem oberen Ende um eine oberhalb der Radstrebenschwenkachse 9 liegende Achse 6 schwenkbar an&eordnet, während ihr unteres Ende S mittels je eines Lenkers sowohl mit dem unteren Schenkel zu der Knickstrebe 1-i,- als auch mit der Radstrebe; gelenlzig verbunden ist. Die unteren Anlenkpunkte 5 und ; " der scherenartig angeordneten Lenker liegen nahe dein Anlenkpunkt 2 des Knichstrcbensehenkels i, an der Radstrebe 1-.The wheel strut; can be pivoted about an axis c} fixed to the aircraft. The buckling strut i-i ″ is articulated at 2 on the wheel strut 7 and at 3 on the aircraft body. The retractable strut 1 is at its upper end about a pivot axis above the wheel strut 9 lying axis 6 pivotable, while its lower end S means one link each with the lower leg to the buckling strut 1-i, - and with the wheel strut; is connected nicely. The lower pivot points 5 and; " the Scissors-like arranged handlebars are close to your articulation point 2 of the knee handle i, on the wheel strut 1-.

B eiin Beginn des E inziehvorganges leitet zunächst die Einziehstrebe .l durch die Kraftausübung im Anlenkpunkt 5 das Knicken der Knickstrebe i-1" ein und bewirkt damit die Entriegelung des Fahrwerks; dann wird die Hauptkraft der Einziehstrebe auf die Radstrebe 7 ausgeübt und bewirkt unmittelbar das Einschwenken derselben.At the beginning of the retraction process, the retraction strut is the first to guide .l by the exertion of force in the articulation point 5, the buckling of the buckling strut i-1 "a and thus causes the undercarriage to be unlocked; then the main force of the retractable strut exerted on the wheel strut 7 and directly causes the same to pivot.

Die Ausführung und Anwendung des Erlir_dungsgeg-enstandcs kann in Einzelheiten von dein dargestellten Beispiel abweichen. Die zur Bewegung des Fahrwerks dienende Einziehstrebe kann mechanisch, hydraulisch, pneumatisch, elektrisch oder auf andere Art angetrieben werden.The execution and application of the subject matter can be found in Details differ from the example shown. The one used to move the landing gear Serving retractable strut can be mechanical, hydraulic, pneumatic, electrical or be driven in a different way.

Claims (1)

-PATENTANSPRUCH: Einziehbares Fahrwerk für Flugzeuge, bei welchem die um eine flugzeugfeste Achse ehischwenkbare Radstrebe in der Landestellung durch eine dabei in der Strecklage befindliche Knickstrebe am Flugzeugkörper abgestützt ist und an der Knickstrebe eine mit dem olDoren Ende an einem flugzeugfesten Punkt angelenkte Einziehstrebe angreift, dadurch gekennzeichnet, daß das untere Ende (S) der in verhältnismäßig geringer Entfernung annähernd parallel zur Radstrebe um einen oberhalb der Radstrebenschwenkachse (9) liegenden Gelenkpunkt (6) schwenkbar angeordneten Einziehstrebe (4) mittels je eines Lenkers sowohl mit de:ii unteren Schenkel (i,,) der Knickstrebe (i- 1j als auch mit der Radstrebe (;) gelenkig verbunden ist, wobei die unteren Anlenkpunkte (5, 7a) der scherenartig angeord. rieten Lenker nahe dem Anlenhpui@@t (2) des unteren Knicl>strebenscheiilz:els an der Radstrebe liegen..-PATENT CLAIM: Retractable landing gear for aircraft, in which the wheel strut that can be swiveled around an aircraft-fixed axis in the landing position a buckling strut located in the extended position is supported on the aircraft body and on the buckle strut one with the olDoren end at a point that is fixed to the aircraft hinged pull-in strut engages, characterized in that the lower end (S) at a relatively short distance approximately parallel to the wheel strut by one pivot point (6) located above the wheel strut pivot axis (9) Retractable strut (4) by means of a link each with the: ii lower leg (i ,,) the buckling strut (i- 1j as well as with the wheel strut (;) is articulated, with the lower articulation points (5, 7a) of the scissors-like angeord. advised handlebars near that Anlenhpui @@ t (2) of the lower knee> strut shield: els lie on the wheel strut ..
DEO23804D 1937-09-27 1938-09-24 Retractable landing gear for aircraft Expired DE733061C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR733061X 1937-09-27

Publications (1)

Publication Number Publication Date
DE733061C true DE733061C (en) 1943-03-18

Family

ID=9124252

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO23804D Expired DE733061C (en) 1937-09-27 1938-09-24 Retractable landing gear for aircraft

Country Status (1)

Country Link
DE (1) DE733061C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720063A (en) * 1985-09-30 1988-01-19 The Boeing Company Main landing gear with variable length drag brace
FR2801865A1 (en) * 1999-12-03 2001-06-08 Messier Dowty Sa Aircraft front landing gear comprises undercarriage leg pivoted by actuator, leg comprises caisson, sliding rod and rotating sleeve connected to orientation control device
EP2277774A1 (en) * 2004-06-18 2011-01-26 Goodrich Corporation Retractable articulated landing gear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720063A (en) * 1985-09-30 1988-01-19 The Boeing Company Main landing gear with variable length drag brace
FR2801865A1 (en) * 1999-12-03 2001-06-08 Messier Dowty Sa Aircraft front landing gear comprises undercarriage leg pivoted by actuator, leg comprises caisson, sliding rod and rotating sleeve connected to orientation control device
EP2277774A1 (en) * 2004-06-18 2011-01-26 Goodrich Corporation Retractable articulated landing gear
US8136759B2 (en) 2004-06-18 2012-03-20 Goodrich Corporation Retractable articulated landing gear

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