Oil helicopter system
Oil helicopter system

Oil helicopter system


The oil transmission system usually perform autonomous for each gear (main, intermediate, PB).

It is recommended to include in the design of transmission gearbox housings an oil cavity, which functions as an oil tank. The gearbox housings must have a filler neck with a filter and a device for draining and measuring the amount of oil in the oil cavity. Reducers with a lubrication system under pressure must also have: filters at the inlet to the oil supply and pumping pumps and behind the oil supply pump to the injectors; An oil bypass system past the filter element; A settling cavity with a draining device; Prompter for equalizing the pressure inside the gearbox with atmospheric pressure. In case of loss of oil (for example, in GR), it should be possible to operate the HB in autorotation mode when the helicopter drops from the maximum cruise altitude and then landed.

The cooling system of the engine and gearbox units

The cooling system consists of the following elements: the air inlet, fan-driven, oil-air radiator, hood, regulating shutters (blinds), the output of the air channel and flaps control system.

HPT cooling system is usually included in the design of the engine. In some cases, the cooling system utilizes bleed air from the ventilation system (4.10.1) and supplied to the oil cooler for cooling engines and GR in an air conditioning system of the helicopter cab, starter generators, a compressor and exhaust pipes of engines. PTO oil cooler for the rotation of the fan can be performed directly from PB shaft (4.10.1,6, in).

The required amount of air from the ventilation unit is defined as the sum of the costs for all the above units. The surface of the cooling oil-air radiator

To adjust the oil flow through the radiator, the radiator and for protection from increased pressure due to the high viscosity of cold oil ua radiator thermostat is set.

Oil helicopter system

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