ABSTRACT
This chapter describes a variety of protection systems found on a range of aircraft. Various systems are installed on aircraft to protect them from a variety of hazards including: stalling, ice, rain, unsafe configuration during takeoff and skidding. Stall protection systems provide the crew with a clear and distinctive warning before the stall is reached. The primary sensor required for this protection system is the aircraft's angle of attack. Warning systems are installed to provide the crew with clear and distinctive warning before the stall is reached. This can be a warning horn and/or warning light on smaller aircraft. On larger aircraft the stall warning system comprises an angle of attack vane and stick shaker. Various methods of windscreen ice and rain protection are used on a range of aircraft types. Various technologies are employed; the function of the sensor is to detect ice accretion and provide a warning to the crew and/or turn on the ice protection systems.
