HELICOPTER MAIN GEARBOX SUPPORT Russian patent published in 2024 - IPC B64C27/04 B64C27/12 

FIELD: aviation.

SUBSTANCE: invention is intended for use in aircraft industry, in helicopter industry for creation of support of main reduction gear of helicopter, which is integrated into power structure of fuselage. Helicopter main gearbox support comprises sub-gearbox plate (1) and additional plate (6), which are made in the form of all-milled parts, as well as walls (7, 8, 9, 10) connecting them to each other. Under-gearbox plate (1) comprises housing (3), which has a closed box-type contour, on top on opposite sides of housing (3) there are two horizontal boards (2), and on other sides between them there are two platforms (4) equipped along the contour vertical ribs (5). Platforms (4) follow the shape of the mating surface of main reduction gear (31). Lower flange of housing (3) is attached to walls (7, 8, 9, 10). Four attachment assemblies of main reduction gear (31) are located on under-gearbox plate (1).

EFFECT: providing rigid attachment of main gearbox of helicopter, perception of operational loads from action of external forces and their redistribution along frame of helicopter airframe in all flight modes.

5 cl, 7 dwg