Terminology
Engine casing
1. engine casing

As one of the key aero-engine components, casings have the function of carrying, holding and connecting other parts of the aero-engine, and its machining accuracy and quality directly affect the manufacturing quality and performance of the engine. Typical aero-engine casings include turbine casing, compressor casing, combustor casing and fan casing.


source:ingersoll-imc.com