DE691667C - the surface of an aircraft component provided through opening for a retractable landing gear - Google Patents
the surface of an aircraft component provided through opening for a retractable landing gearInfo
- Publication number
- DE691667C DE691667C DE1936H0146443 DEH0146443D DE691667C DE 691667 C DE691667 C DE 691667C DE 1936H0146443 DE1936H0146443 DE 1936H0146443 DE H0146443 D DEH0146443 D DE H0146443D DE 691667 C DE691667 C DE 691667C
- Authority
- DE
- Germany
- Prior art keywords
- opening
- landing gear
- aircraft component
- flap
- retractable landing
- 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
- B64C25/16—Fairings movable in conjunction with undercarriage elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Body Structure For Vehicles (AREA)
Description
Bei den bekannten Abdeckklappen für die einziehbaren Fahrgestelle ist der untere Klappenteil scharnierartig mit dem oberen verbunden und wird beim Ausschwenken des Fahrgestells zwangsläufig um 900 seitlich verschwenkt, damit nicht die ganze Abdeckung durch Berührung mit dem Boden zerstört wird.In the known cover flaps for the retractable chassis, the lower flap part is connected to the upper part like a hinge and is inevitably pivoted through 90 ° laterally when the chassis is pivoted out so that the entire cover is not destroyed by contact with the floor.
Aus konstruktiven, baulichen und betriebliehen Gründen kann meistens nur der uiiter der Radachse befindliche Klappenteil schwenkbar gemacht werden, und es kommen daher trotz des Umklappens noch vielfach Zerstörungen vor, wenn der Boden z. B. bei Notlandungen sehr uneben ist. Außerdem verschmutzen die Klappenteile oft so, daß sich die Klappe nicht ganz schließen kann. Man hat daher auch bereits eine zweiteilige Ausbildung der Abdeckklappe vorgeschlagen, beiFor structural, structural and operational reasons, usually only the uiiter the wheel axle located flap part can be made pivotable, and it come from there despite the folding down, there are still many destructions before the floor z. B. during emergency landings is very uneven. In addition, the flap parts often get so dirty that the flap cannot close completely. Man has therefore already proposed a two-part design of the cover flap at
20. welcher der_ eine Teil mit dem Fahrwerk fest verbunden ist, während der andere, zur Abdeckung der restlichen Öffnung, beispielsweise im Flügel, dienende Teil an der Flügelunterseite schwenkbar angeordnet ist. Das Verschwenken der flügelfesten Abdeckplatte wird bewirkt durch ein air ihr angeordnetes, als Winkelarm ausgebildetes Verstellglied, welches durch das beim Einschwenken an ihm anstoßende Rad mitgenommen wird und so die Abdeckplatte in Schließlage schwenkt.20. Which one of the parts is fixed to the chassis is connected, while the other, to cover the rest of the opening, for example in the wing, serving part is pivotably arranged on the underside of the wing. The pivoting of the sash-fixed cover plate is effected by an adjusting member arranged as an angle arm, which is taken along by the wheel that abuts it when it is swiveled in, thus pivoting the cover plate into the closed position.
Diese bekannte Anordnung hat den Nachteil, daß die Betätigung des Winkelhebels bzw. das Verschwenken der Abdeckplatte durch den Radreifen vorgenommen wird, daß also die Lage der Abdeckplatte in Schließstellung nicht festgelegt, sondern von dem jeweiligen Formzustand des Reifens abhängig ist. -This known arrangement has the disadvantage that the actuation of the angle lever or the pivoting of the cover plate is made by the tire that So the position of the cover plate in the closed position is not determined, but by the the respective shape of the tire is dependent. -
Die Erfindung vermeidet diesen Nachteil und stellt eine besonders geeignete, einfach und sicher wirkende Schließvorrichtung dar, bei welcher als Verstellglied eine gegen eine Federkraft einknickbare, in gestreckter Lage die Abdeckplatte offen haltende Knickstrebe vorgesehen ist.The invention avoids this disadvantage and provides a particularly suitable, simple one and securely acting locking device, in which an adjusting member against a Buckling brace which can be buckled by spring force and which holds the cover plate open in the extended position is provided.
In der Zeichnung sind zwei als Beispiele dienende Ausführungsformen der Erfindung dargestellt.In the drawing are two exemplary embodiments of the invention shown.
Abb. r zeigt den am Flügel befestigten Klappenteil in Verbindung mit einer Knickstrebe im geöffneten Zustande mit »strichpunktiert angedeuteter Schließlage undFig. R shows the flap part attached to the wing in connection with a buckling strut in the open state with »closed position indicated by dash-dotted lines and
*) Von dem P dt ent sucher ist ah der Erfinder angegeben worden:*) The inventor has been stated by the P dt searcher:
Heins Schneider in Seestadt Rostock.Heins tailor in Rostock seaside town.
Abb. 2 eine Seitenansicht zu Abb. i.
Abb. 3 ,gibt schematisch die· Anwendung
eines zur Betätigung der Klappe dienenden Profilstahlbandes wieder,Fig. 2 is a side view of Fig. I.
Fig. 3 shows schematically the application of a section steel band serving to actuate the flap,
Abb. 4 zeigt einen Querschnitt des Profilstahlbandes. Fig. 4 shows a cross section of the profile steel strip.
Mit dem Flügel α ist der Klappenteil c einer Fahrwerkabdeckklappe um eine Achse b drehbar befestigt. An der Klappe c greift derWith the wing α , the flap part c of a landing gear cover flap is attached rotatably about an axis b. At the flap c the
ίο eine um ein Gelenkt drehbare Teile einer Knickstrebe an, deren anderer Teil / bei g mit dem Fliigelö verbunden ist. Beide Teile der Knickstrebe e stehen unter der Wirkung einer Feder fi, die die Strebe in ihrer gestreckten Lage hält. Am Teil/ ist ein Anschlag/ befestigt, der beim Einziehen des Fahrwerkes durch das Rad k nach oben gedrückt wird und dadurch die Knickstrebe e, f betätigt (Abb. 1 und 2). Dadurch wird die Klappe c geschlossen.ίο one part of a buckling strut that can be rotated about a hinge, the other part of which / at g is connected to the wing. Both parts of the buckling strut e are under the action of a spring fi, which holds the strut in its extended position. A stop / is attached to the part /, which is pressed upwards by the wheel k when the undercarriage is retracted and thereby actuates the buckling strut e, f (Fig. 1 and 2). This closes flap c.
Wie aus den Abb. 3 und 4 ersichtlich ist, kann man statt der Knickstrebe auch ein Profilstahlband I verwenden. ' Beim Einschwenken des Rades k wird das ,Stahlband/-, durch dieses eingeknickt und die Klappe c geschlossen. Der größere Teil/n der Abdeckklappe ist, wie in Abb. 3 angedeutet ist, mit der Fahrwerkstrebe« fest verbunden und deckt die übrigen Teile der für das Fahrwerk nötigen Flügelausschnitte ab. Beim Ausschwenken des Rades k kehrt das Stahlband t infolge seiner Federwirkung wieder in die gestreckte Lage zurück und hält die Klappe c geöffnet.As can be seen from Figs. 3 and 4, a section steel strip I can also be used instead of the buckling strut. When the wheel k is swiveled in, the steel band / - is buckled by this and the flap c is closed. The larger part (s) of the cover flap is, as indicated in Fig. 3, firmly connected to the landing gear strut and covers the remaining parts of the wing cutouts required for the landing gear. When the wheel k is swiveled out, the steel strip t returns to the stretched position due to its spring action and keeps the flap c open.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936H0146443 DE691667C (en) | 1936-02-04 | 1936-02-04 | the surface of an aircraft component provided through opening for a retractable landing gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936H0146443 DE691667C (en) | 1936-02-04 | 1936-02-04 | the surface of an aircraft component provided through opening for a retractable landing gear |
Publications (1)
Publication Number | Publication Date |
---|---|
DE691667C true DE691667C (en) | 1940-06-03 |
Family
ID=7179949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1936H0146443 Expired DE691667C (en) | 1936-02-04 | 1936-02-04 | the surface of an aircraft component provided through opening for a retractable landing gear |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE691667C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415615A (en) * | 1942-02-16 | 1947-02-11 | Edward E Wallace | Airplane |
US2422056A (en) * | 1944-05-06 | 1947-06-10 | Curtiss Wright Corp | Closure actuating and securing mechanism |
US2484900A (en) * | 1946-10-11 | 1949-10-18 | Curtiss Wright Corp | Wheel fairing lock and release |
US2538878A (en) * | 1948-02-05 | 1951-01-23 | Curtiss Wright Corp | Retractable landing gear |
DE1903575B1 (en) * | 1969-01-24 | 1970-05-14 | Ver Flugtechnische Werke | Covering device for a passage opening of an aircraft landing gear that can be swiveled out and in |
EP3141477A1 (en) * | 2015-09-11 | 2017-03-15 | Embraer S.A. | Aircraft landing gear door actuation mechanism with integrated emergency actuation assembly |
-
1936
- 1936-02-04 DE DE1936H0146443 patent/DE691667C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415615A (en) * | 1942-02-16 | 1947-02-11 | Edward E Wallace | Airplane |
US2422056A (en) * | 1944-05-06 | 1947-06-10 | Curtiss Wright Corp | Closure actuating and securing mechanism |
US2484900A (en) * | 1946-10-11 | 1949-10-18 | Curtiss Wright Corp | Wheel fairing lock and release |
US2538878A (en) * | 1948-02-05 | 1951-01-23 | Curtiss Wright Corp | Retractable landing gear |
DE1903575B1 (en) * | 1969-01-24 | 1970-05-14 | Ver Flugtechnische Werke | Covering device for a passage opening of an aircraft landing gear that can be swiveled out and in |
EP3141477A1 (en) * | 2015-09-11 | 2017-03-15 | Embraer S.A. | Aircraft landing gear door actuation mechanism with integrated emergency actuation assembly |
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