SPAR, AND ALSO CHASSIS AND TRAILER CHASSIS PROVIDED WITH THE SAME SPAR Russian patent published in 2018 - IPC B62D21/02 B62D21/09 B62D53/06 

FIELD: aviation.

SUBSTANCE: group of inventions relates to the trailer chassis with the spar. Chassis spar (23) comprises upper flange (32) and lower flange (33). Both spar (23) flanges (32, 33) have continuous extension along the spar (23) entire length. Upper or lower flanges (32, 33) have two opposite directed bent sections (38, 39), which are both located in front or behind the said wheel (26). Length of perpendicular from the bent flange (32, 33) to the non-bent flange (32) at the chassis (27) one end is greater than the corresponding perpendicular length to the non-bent flange (32) on the chassis (27) other end. Non-bent flange (32) and the bent flange (33) are connected to each other by the connecting element (40, 51, 52). Spar (23) is provided with the central flange (34), which is located between the upper flange (32) and the lower flange (33). Central flange runs from the upper and lower flanges (32, 33) one end to the region located between two bent sections (38, 39).

EFFECT: enabling the spar structure weight reduction while maintaining the necessary rigidity.

61 cl, 13 dwg