AIRCRAFT HYDRAULIC SYSTEMS

• Drive generators
• Hydraulic pumps
• Hydraulic plants
• Hydraulic motors
• Hydraulic distributors with electromagnet control
• Hydraulic systems units

PLUNGER VARIABLE-DELIVARY PUMP NP123

PURPOSE

To supply aircraft hydraulic systems with operational liquid.

STRUCTURE  CHARACTERISTICS

Pump includes the rotating cylinder block, axial plunger disposal, the front distribution of operational liquid, and liquid regulator.

The pump scheme has a special device to decrease high frequency pulsation of delivery pressure.

 There was used an original engineering solution of the delivery control device that provides a stable regulation through the whole operational range of pressure, stable pump shaft rotation and temperature.

A cenrifugal boosting pump is installed in the plunger pump body, and provides uncavitation functioning of plunger pump under the reduced input pressure.

Electrical hydraulic off-loading device receiving an electrical signal can switch off the plunger pump from the hydraulic system in the following cases:

• To facilitate engine starting;
• To operate in energy saving modes;
• To protect the pump and the hydraulic system during emergency situation.

The pump is supplied by a special device to provide the working capacity when the pressure in the outlet pipes with an ensured heat rejection rises.

APPLICATION AREA

Applied at hydraulic systems of  different modifications of aircrafts IL96-300 and TU204 which use fire and explosion safety hydraulic liquids with organophosphorus esters.

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