Compressor blades from a turbine engine.
The compressor sits at the front of the engine and pulls in the atmospheric air. There are typically two types of compressors in this section, both a low and high pressure compressor. The air first enters the low pressure compressor, where its pressure is raised to roughly four times higher than atmospheric pressure by decreasing the volume. This process of shrinking the volume occurs again in the high pressure compressor, where its pressure is increased another 6 times higher. As the pressure is increased, the temperature increases as well, oftentimes leaving the compressor at over 500 degrees Celsius. Prior to going to the combustion chamber, some of the pressurized air is siphoned off in order to cool the parts in the combustion chamber.