DE733061C - Retractable landing gear for aircraft - Google Patents
Retractable landing gear for aircraftInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/14—Undercarriages 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)
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)
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 |
-
1938
- 1938-09-24 DE DEO23804D patent/DE733061C/en not_active Expired
Cited By (4)
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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