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Single-stage servo valves suffer from limitations in flow capability and stability due to torque motor power requirements. Two-stage servo valves may use flapper, jet pipe, or deflector jet valves as hydraulic amplifier first stages to position a second-stage spool valve. This design results in significant increases in servo valve flow ...
[2]: 13 Inside the PCU is a dual servo valve that, based on input from the pilot's rudder pedals or the aircraft's yaw damper system, directs the flow of hydraulic fluid in order to move the rudder. [ 2 ] : 19 The PCU for affected Boeing 737 aircraft was designed by Boeing and manufactured by Parker Hannifin .
Yuken Europe is based on Speke Hall Industrial Estate where it employs circa 20 staff. The plant in Liverpool is used for manufacturing, testing and development of new products. In 2013, Yuken invested a five-figure sum into a new laboratory at its base in Speke to test servo valves. [3]
1986-Lotus Engineering and Moog Inc. formed joint venture Moog-Lotus Systems Inc. to commercialize the Lotus technology with electro-hydraulic servo valves designed by Moog. The joint venture was later purchased by the TRW Steering and Suspension Division. 1989 Citroën XM had a similar electronic control of hydraulic suspension, branded ...
Moog Inc. (/ m oʊ ɡ / MOHG) is an American-based designer and manufacturer of electric, electro-hydraulic and hydraulic motion, controls and systems for applications in aerospace, defense, industrial and medical devices. The company operates under four segments: aircraft controls, space and defense controls, industrial controls, and components.
Globe control valve with pneumatic actuator and "positioner". This is a servo which ensures the valve opens to the desired position regardless of friction. A common type of servo provides position control. Commonly, servos are electric, hydraulic, or pneumatic.