US 12,145,718 B2
Aircraft undercarriage with braked and motor-driven wheels
Jean-Yves Ravel, Velizy-Villacoublay (FR)
Assigned to SAFRAN LANDING SYSTEMS, Velizy Villacoublay (FR)
Filed by SAFRAN LANDING SYSTEMS, Velizy Villacoublay (FR)
Filed on Oct. 26, 2018, as Appl. No. 16/171,756.
Claims priority of application No. 1760199 (FR), filed on Oct. 27, 2017.
Prior Publication US 2019/0127053 A1, May 2, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. B64C 25/20 (2006.01); B64C 25/22 (2006.01); B64C 25/32 (2006.01); B64C 25/34 (2006.01); B64C 25/36 (2006.01); B64C 25/42 (2006.01); B64C 25/60 (2006.01)
CPC B64C 25/20 (2013.01) [B64C 25/22 (2013.01); B64C 25/34 (2013.01); B64C 25/36 (2013.01); B64C 25/405 (2013.01); B64C 25/42 (2013.01); B64C 25/60 (2013.01); B64C 2025/345 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An aircraft comprising at least one undercarriage having a leg provided at its bottom end with a rocker arm carrying at least two axles, including one in front of a hinge between the rocker arm and the undercarriage and the other behind said hinge,
the undercarriage being characterized in that one of the axles is fitted with one or more braked wheels and the other axle is fitted with one or more motor-driven wheels, and
the undercarriage including a rocking shock absorber coupled between the leg and the rocker arm, a length of the rocking shock absorber varying so as to cause the application of a force to the hinge in order to press the motor-driven wheels against the ground and to increase the load on the motor-driven wheels so as to increase an effectiveness of the motor-driven wheels in moving the aircraft on the ground without help from engines of the aircraft.