US 12,404,012 B2
Aircraft landing gear with at least one motorized wheel configured to be positioned close to and remote from landing gear strut
Sébastien Dubois, Velizy (FR); Philippe Henrion, Velizy (FR); and Florent Fortier, Velizy (FR)
Assigned to SAFRAN LANDING SYSTEMS, Velizy Villacoublay (FR)
Appl. No. 18/009,260
Filed by SAFRAN LANDING SYSTEMS, Velizy-Villacoublay (FR)
PCT Filed Jun. 10, 2021, PCT No. PCT/EP2021/065620
§ 371(c)(1), (2) Date Dec. 8, 2022,
PCT Pub. No. WO2021/250169, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 2006056 (FR), filed on Jun. 10, 2020.
Prior Publication US 2023/0234700 A1, Jul. 27, 2023
Int. Cl. B64C 25/32 (2006.01); B64C 25/00 (2006.01); B64C 25/34 (2006.01); B64C 25/42 (2006.01); B64C 25/60 (2006.01)
CPC B64C 25/405 (2013.01) [B64C 25/34 (2013.01); B64C 25/42 (2013.01); B64C 25/60 (2013.01); B64C 2025/008 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A landing gear for an aircraft, the landing gear comprising:
an upper portion intended to be joined to a structure of the aircraft;
a lower portion provided with a first axle and a second axle, the first axle being provided with at least one braked wheel and the second axle being provided with at least one motorised wheel,
a first actuator arranged to move the second axle between remote and close positions with respect to the upper portion independently from the first axle such that, in the remote position, the at least one braked wheel and the at least one motorised wheel are configured to be simultaneously in contact with a running surface, and while in the close position, each of the at least one braked wheel on the first axle is in contact with the running surface while each of the at least one motorised wheel on the second axle remains at a distance from the running surface; and
a strut having an upper end belonging to the upper portion of the landing gear and a lower end belonging to the lower portion of the landing gear and an operating arm, the operating arm being pivotably mounted with respect to the strut, said second axle provided with the at least one motorised wheel being fixed on the operating arm at a distance from the strut,
wherein the first actuator is connected to the strut and to the operating arm to pivot the operating arm with respect to the strut and to move the second axle between the remote position of the second axle with respect to the upper portion and the close position of the second axle with respect to the upper portion, and
wherein the first actuator comprises a first damper interposed between the operating arm and the strut so as to dampen a pivot movement of the operating arm with respect to the strut.