Aerospace Power Plant – Case Study

Client The client is a global aerospace powerplant manufacturer. Established in the early 1900s, this company’s main mission is to design, manufacture and distribute power systems for aviation use. Background This multinational company received a new engine and airframe opportunity requiring electrical and TC signals utilizing the latest technology. However, the customer SOW and material …

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Variable Reluctance Speed Sensors

Variable reluctance speed sensors measure the position and speed of moving ferrous objects. Their versatility, simplistic design, and relatively low cost of manufacturability make them attractive for use in the aerospace industries. The variable reluctance sensor consists of a permanent magnet and a ferromagnetic pole piece surrounded by a coil of wire. The sensor generates an analog voltage output signal when a ferromagnetic material passes by the tip of the pole piece. The magnitude of the induced voltage is therefore a direct function of the flux linkage in the coil as a function of time. The voltage signal is sent to the control unit where it is often converted to a digital signal to support the controlling function.

The benefits of VR sensors

VR sensors consist of many benefits such as low cost and robust proven speed sensing technology. They require few wiring connections and are highly reliable. They have self-generating electrical signals thus requiring no external power supply. One area that the VR sensors excel in is the ability to operate in high-temperature applications, making them a good fit for sensing the turbine speed of a jet engine. The sensors are highly customizable and can meet specific applicational requirements.