MAIN GEAR OIL SYSTEM Russian patent published in 2019 - IPC F01M1/12 F01M11/02 B64C27/04 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to aircraft engineering. Main gear oil system comprises tray (3) with main oil supply mains (7,8) connected and cooling devices (17,18). Outlet (4) of the tray (3) through tees (5,6) and shut-off valves (11,12) is communicated via lines (7,8) with cooling devices (17,18), and further with tray (3) inlet (19) via tees (20) and check valves (22,23). In addition, the tray (3) outlet (4) via tees (5,6) and shut-off valves (26,27) is interconnected by bypass lines (9,10) with emergency input (19’) of tray (3) through tee (28). Tees (5,6) are installed on the gear box (1) housing at the tray (3) outlet (4). Tees (20,28) are installed on the housing of the reduction gear (1) at the tray (3) inputs (19,19’). Sleeves (13,15) and (14,16) of main lines (7,8) made of heat-resistant, chemically resistant polymer materials are secured in pairs by yokes to each other and fixed to struts (2) of reduction gear.

EFFECT: elimination or reduction of oil loss and, as a result, improvement of flight safety and accident-free operation, as well as compact arrangement of the main gearbox compartment in the limited space.

1 cl, 4 dwg