التفاصيل البيبلوغرافية
| العنوان: |
LANDING GEAR |
| Document Number: |
20110180662 |
| تاريخ النشر: |
July 28, 2011 |
| Appl. No: |
12/864371 |
| Application Filed: |
January 26, 2009 |
| مستخلص: |
A bogie-type landing gear for aircraft is provided. The landing gear includes at least one front wheel and at least one rear wheel connected to a beam, a rocking arm centrally and rotatably connected to said beam, and a shock absorbing element. The rocking arm ends and the shock absorbing element, which are distal to the wheels, are articulated on a lever element hinged on the aircraft frame, onto which an actuator assembly for rotating said lever element urges between a position in which the wheels are in an operative configuration and a position in which the wheels are retracted in the landing gear bay. |
| Inventors: |
Nardone, Flora (Napoli (NA), IT); Carreras, Giuseppe (Napoli (NA), IT) |
| Assignees: |
MAGNAGHI AERONAUTICA S.P.A. (Napoli (NA), IT) |
| Claim: |
1. A bogie-type landing gear (1) for an aircraft, the landing gear comprising: at least one front wheel (2) and at least one rear wheel (3) connected by a beam (4), a rocking arm (7) centrally and rotatably connected to said beam (4), and a shock absorbing element (11), wherein ends (7) of the rocking arm and of the shock absorbing element (11), which are distal to the wheels (2, 3), are articulated on a lever element (10) hinged on a frame of the aircraft, on which an actuator assembly for rotating (15) said lever element (10) acts between a position in which the wheels (2, 3) are in an operative configuration and a position in which the wheels (2, 3) are retracted in a landing gear bay of the aircraft. |
| Claim: |
2. Landing gear (1) according to claim 1, wherein said lever element (10) is articulated to the aircraft frame at a first end thereof onto which an articulated joint of the rocking arm (7) urges on an attachment point (14). |
| Claim: |
3. Landing gear (1) according to claim 2, wherein said lever element (10) is substantially placed along the aircraft advancing direction during landing, said first end being directed towards the bow and the landing gear (1) being a front retraction type. |
| Claim: |
4. Landing gear (1) according to claim 3, wherein said shock absorbing element (11) extends between an end of the lever element (10) opposed to said first end and the articulated joint on said rocking arm (7) next to an articulated joint on said beam (4). |
| Claim: |
5. Landing gear (1) according to claim 1, wherein said shock absorbing element (11) is of a cylinder-piston oleo-pneumatic kind. |
| Claim: |
6. Landing gear (1) according to claim 5, wherein the piston is articulated to the beam (4) and the cylinder is articulated to the lever element (10). |
| Claim: |
7. Landing gear according to claim 1, having a single front wheel (2) and a single rear wheel (3), placed on a same side of the beam (4). |
| Claim: |
8. Landing gear according to claim 3, further comprising a pitch compensator (22) placed on a front portion of the beam (4). |
| Claim: |
9. Landing gear (1) according to claim 2, wherein the actuator assembly for rotating (15) said lever element (10) is articulated on the lever element (10) at an extension (16) thereof next to an articulated joint of the shock absorbing element (11). |
| Claim: |
10. Landing gear (1) according to claim 2, wherein the actuator assembly for rotating (15) said lever element (10) has an articulated arm (17) comprising a first portion (18) and a second portion (19) articulated head to head, said first portion (18) being connected to the lever element (10) and said second portion (19) being connected to the aircraft frame. |
| Claim: |
11. Landing gear according to claim 10, wherein a retractile actuator (20) is rotatably connected to an intermediate articulated joint (21) on said second portion (19), for determining the rotation of the lever element (10). |
| Current U.S. Class: |
244/102/R |
| Current International Class: |
64; 64; 64 |
| رقم الانضمام: |
edspap.20110180662 |
| قاعدة البيانات: |
USPTO Patent Applications |
