Outer circulation lubricating system of aero-engine

The invention provides an aero-engine external circulation lubricating system, which relates to the technical field of engine lubrication and comprises a power oil pump, the power oil pump is arranged at the bottom of an engine, and the power oil pump is respectively communicated with a lubricating oil tank, an engine oil radiator and the engine through pipelines. The power oil pump conveys engine oil into the engine for lubrication through a pipeline, then the engine oil in the engine is conveyed into the power oil pump and input into the lubricating oil tank through a pipeline for deslagging and storage, then the engine oil is input into the engine oil radiator through a pipeline for cooling and heat dissipation, and then the engine oil is circularly input into the power oil pump for circulating lubrication. And when the inclination angle of an airplane is large, oil liquid is inclined and engine oil pressure is reduced, the power can still be improved, the engine is reasonably lubricated and cooled, and th