The cooling turbine section of the ACM takes
cool high-pressure bleed air leaving the condenser, and
directs it onto the curved blades of the turbine.
air leaves the turbine it expands, resulting in rapid
cooling of the bleed air. As the turbine rotates, energy,
extracted in the form of heat, transfers through the common
shaft to the fan section.
The fan loads the turbine and
During maximum cooling, the speed of the ACM
may reach 70,000 rpm (fig. 1-29).
Air Cycle Machine Schematic.
Anti-Ice Temperature Sensor.
The anti-ice temperature sensor mounts in the low pressure outlet
This sensor has an electrical
connector, a threaded mounting boss, and a short protruding sensing
The anti-ice temperature sensor senses the
temperature of the turbine discharge air going through the
temperature of the turbine discharge air at 45,F ƒ3,F.
The sensor operates on a negative coefficient which means
if the temperature around the sensor decreases,