Using Microwave Radiometers To Prevent Unstarts

Measurement and control systems based on microwave radiometers would be used to prevent unstarts in the next generation of high-speed (up to mach 2.4) civil-transport airplanes, according to a proposal. "Unstart" denotes a compressor stall in a supersonic aircraft engine, and is caused by a change in the temperature of the incoming air, as explained in more detail below.