Abstract
Actual aerospace and defense technologies present multiple limitations that need to be overcome in order to evolve to less contaminating and more efficient aircraft solutions. Contactless technologies come with essential advantages such as the absence of wear and friction. This work describes the design, prototype, and performance test according to RTCA-DO-160 of an aeronautical magnetic torque limiter. The results show correct continuous transmission operation (2250 rpm and 24 Nm) from −50 °C to +90 °C. Moreover, overload protection has been demonstrated for more than 200 jamming events without damage or required maintenance to the device.
Highlights
The purpose of Smart Fixed Wing Aircraft Integrated Technology Demonstrator (SFWAITD) from the FP7 Clean Sky program [1] is to boost innovative technologies, concepts, and capabilities able to significantly decrease the consumption and oil contamination levels in aircraft systems
Conventional torque limiters based on fuse and/or friction have very low reliability and require continuous maintenance and replacement in case of overload
Electrical overload control requires additional electric elements and sensors with a response time that may be too high for a safe prevention of damage
Summary
The purpose of Smart Fixed Wing Aircraft Integrated Technology Demonstrator (SFWAITD) from the FP7 Clean Sky program [1] is to boost innovative technologies, concepts, and capabilities able to significantly decrease the consumption and oil contamination levels in aircraft systems This program has among its main objectives the replacement of current hydraulic mechanisms for flaps and aircraft control surfaces for fully electrical technologies. Conventional torque limiters based on fuse and/or friction have very low reliability and require continuous maintenance and replacement in case of overload. Machines 2016, 5, 17 overload the magnet slides), through-wall connection (decoupling of thermal and electrical isolation), larger operative speeds (more efficient operative conditions), and ultralow noise and vibrations (no contact or noise generation). The results show correct continuous transmission of an aeronautical magnetic torque limiter.
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