ELECTRONICALLY CONTROLLED AIRCRAFT RETRACTABLE LANDING LIGHT WITH MANUAL REFRACTION CAPABILITY

摘要

An electronically controlled retractable landing light (100) for use with aircraft. A controller (106) compares the commanded position of a lighthead (108) by means of a contactless absolute position sensor (212).Operation of a brake (111), motor (110), and lamp (112) is controlled by a control unit (210). Electrical power to the brake (111), motor (110), and lamp (112) is slowly applied and removed to reduce electromagnetic emissions and extend the service life of a power stage (208), brake (111), motor (110), and lamp (112). The lighthead (108) may be manually stowed in the event of a fault.