An important part of the an aircrafts landing gear is the nose wheel steering system which enables the pilot to carry out safe aircraft steering while on the ground. Despite only being used for relatively short periods of time, the landing gear is vitally important for controlled aircraft manouvarability. The majority of aircraft are steered by changing the angle of the nose wheel with respect to a 'straight ahead' position. The control input comes either from a tiller in the cockpit or the rudder pedals. Rudder pedal steering control is limited while the tiller can provide up to 80 degrees of movement either side of the 'straight ahead position'. The steering angle change is controlled by an electro-hydraulic actuator mounted in the nose wheel and is made in conjunction with the aircrafts control system computer. Aircraft nose wheel steering systems differ in construction depending on the aircraft type, but basically all work in the same manner and require a control input from the cockpit (tiller) to activate an electro-hydraulic actuator mounted in the nose wheel. A RVDT sensor is normally used as the command signal from the cockpit (tiller) and a LVDT sensor mounted in the nose wheel steering actuator provides the feedback signal to complete the steering command.
Active Sensors design and manufacture LVDT and RVDT sensors for primary and secondary flight control electro-hydraulic actuators, engine control valves, brake-by-wire systems and much more... We meet customers system development needs by offering a complete sensor design and delivery service for fixed and rotary wing aircraft.
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