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Landing Gear Control Lever and Valve

Landing Gear Control Lever and Valve
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Landing Gear Control Lever and Valve

Product catalog summary
Technical Overview:
The document provides technical specifications for the Landing Gear Control Lever and Valve used in the AW101 helicopter, manufactured by FIMAC S.p.A., a company specializing in hydraulic and pneumatic equipment.

Lever Specifications:
  • Type: Electromechanical cockpit control lever.
  • Function: Provides electrical and/or mechanical signals to the landing gear hydraulic control valve.
  • Operation: Manual force is used to switch between UP to DOWN or DOWN to UP positions. An additional DOWN EMERGENCY position is available after removing a catch.
  • Features: Daylight and Night Vision options available.

Valve Specifications:
  • Type: Multi-way hydraulic directional control valve.
  • Design: Failure-tolerant aluminum alloy manifold.
  • Actuation: Electrical actuation via two Solenoid Pilot Valves for normal operations; mechanical actuation for emergency operations.
  • Positions: Normal operation (four ways, three positions, spring-centered); Emergency operation (five ways, two positions, spring-retained, accumulator powered).
  • Additional Features: Low leakage spool actuated internal shut-off valve and emergency position indicating electrical signal.

Technical Parameters:
  • Weight: Lever - 1.16 kg; Valve - 1.45 kg.
  • Connector: MIL-C-26482 (class L).
  • Switches: MIL-S-8805 (MS-27-217-1).
  • Operating Voltage: 28 Vdc.
  • Operating Temperature: Lever -40°C to +97°C; Fluid -54°C to +135°C.
  • Operating Pressure: 4000 psi (270 bar).
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Catalog excerpts

Landing Gear Control Lever and Valve-1

Hydraulic & Pneumatic Equipment Lever: Electromechanical cockpit control. Upon manual operation, it provides electrical and/or mechanical pulling signals to the L/G hydraulic control valve. A lever is operated by manual force to give UP to DOWN or DOWN to UP (pull to operate). The same lever can be further moved from DOWN to DOWN EMERGENCY after a catch has been removed. Daylight and Night Vision option. Valve: Multi-ways hydraulic directional control valve. Failure tolerant aluminum alloy manifold design. Electrical actuation by two Solenoid Pilot Valves for the normal UP-to DOWN operation (four ways, three positions, spring centered). Mechanical actuation for the DOWN EMERGENCY operation (five ways, two positions, spring retained, accumulator powered). Low leakage, spool actuated internal shut-off valve to avoid unwanted exploiting of the accumulator. Emergency position indicating electrical signal. TECHNICAL DATA: (Employed on AW101) Lever: Via Piemonte, 19 20030 SENAGO (Milano) Italy www.fimac.aero Tel.: +39 0299010754 Fax: +39 0299010759 e-mail: [email protected] Operating Temperature:

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