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Autonomous electro-hydraulic steering gear ARP-21N

Type of product: Electro-hydraulic drives

Company: GP Kharkov Aggregate Design Bureau

Appointment: ARP-21N is designed to deflect the rudder according to the input mechanical signal in the main or standby mode of the control system of the aircraft.

Description: ARP-21N consists of a power cylinder, an asynchronous electric motor, a pump station, a piston compensation-suppressing device with a piston position sensor, a lever control system, a control valve box with make-up valves and a ring valve.

Specifications:

Working fluid

NGZH-5U or Skydrol LD-4

Working stroke of the output link, mm

106 ± 1

Maximum stroke of the input link, mm

118 + 1

The most developed effort, kN
– offline control
– when powered by an aircraft hydraulic system

25
30 ± 2

Maximum stem speed, mm / s:
– in the absence of load
– at a load of 17,000 N

45 + 20
not less than 14

ARP deadband for input link without load on the rod, mm

no more than 0.5

Supply voltage of an electric motor with alternating three-phase current at a frequency of 400 Hz, V

115/200

Supply voltage of an electromagnet, V

27

Weight kg

no more than 20

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