The Rolls Royce RB211-524 engine is flat rated to 84ºF ambient temperature with 50,000 lbs. of thrust. The engine has three spools: N1, N2 and N3.
- N1 - Low Pressure (LP) compressor which a single stance fan and three stage turbine.
- N2 - Intermediate Pressure (IP) compressor with a 7 stage axial flow single stage turbine
- N3 - High Pressure (HP) compressors with a 6 stage axial flow single stage turbine
Direction of orations is counterclockwise as viewed from the rear. The image above show the hot stream air slow as well as the cold stream airflow.
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