FIELD: aviation.
SUBSTANCE: invention relates to aircraft, for example helicopter. Oil tank (1) contains housing with filler neck (36) and drain valve (52), expansion tank (53) and unions. Oil tank (1) is equipped with frame (43) with oil-measuring glass, for cleaning of which guide tube (48) is provided. Inside oil tank (1) there is a built-in expansion tank (53) containing labyrinth cones (55), and inside neck (36) there is filter (37).
EFFECT: excluding overheating of engines and providing lubrication of friction parts of engines, as well as compact arrangement of elements of external oil system of engines in restricted space of engine compartment.
7 cl, 4 dwg
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