Jet Propulsion: The Compressor and Turbine

Jet Propulsion: The Compressor and Turbine

1. Jet Propulsion The Compressor and Turbine

2. What do the compressors do? They take a quantity of air and squeeze it. Each stage of the compressor is made up from a rotor blade in front of the stator vanes . The compressor is driven by the turbine. It rotates at a high speed. This adds energy to the airflow as well as compressing it into a smaller space. By compressing the air, the pressure and temperature is increased.

3. Compressor blades are aerofoil section which produce lift just the same as a aircraft wing or propeller blade. As the blades rotate they force air rewards into the compressor stators . Stator vanes are attached in clusters, or a complete ring to the engine casings, and are similar to the compressor blades in aerofoil section. These compress the air.

4. Airflow FIRST STAGE ROTOR STATOR SECOND STAGE ROTOR STATOR THIRD STAGE ROTOR STATOR FOURTH STAGE ROTOR STATOR FIFTH STAGE ROTOR STATOR

5. Turbine The turbine blades are driven by the gas stream passing through them, just the same as the wind drives a windmill. They work in the opposite way to Compressor blades . There are two types of turbine blade aerofoil section, Impact and Reaction.

6. Impact Turbine Blades These are driven simply by the weight of the gas stream hitting it. Reaction Turbine Blades T he gap between adjacent turbine blades is smaller at the trailing edge compared to the leading edge, and therefore forming a convergent duct.