FIELD: aviation.
SUBSTANCE: invention relates to the field of aviation, in particular to structures of transmissions of rotary-wing aircrafts. Aircraft (1) with a “hanging” function contains drive unit (10), rotor (3, 4), and gearbox (5) placed between drive unit (10) and rotor (3, 4). Gearbox (5) contains gear (9a, 9b, 9c, 9d, 9e). Gear (9a, 9b, 9c, 9d, 9e), in turn, contains main case (40), which can rotate around first axis (B), and a group of first cogs (13) cantilever protruding from main case (40). Gear (9a, 9b, 9c, 9d, 9e) contains the first pair of first rings (50, 51) axially opposite to each other and interacting with gear (9a, 9b, 9c, 9d, 9e) in such a way that to exert radial force on gear (9a, 9b, 9c, 9d, 9e).
EFFECT: prevention of jamming of a gearbox, increase in the safety of helicopter passengers.
14 cl, 5 dwg
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