DIFFUSER CASE - DESCRIPTION AND OPERATION

** ON A/C NOT FOR ALL

1. General

A. Diffuser Case

(1) The diffuser case, combustion chamber and turbine nozzle supply the hot exhaust gases of internal combustion to the turbine modules. The diffuser case also functions as a structural support for the High Pressure Compressor (HPC) and the High Pressure Turbine (HPT) cases.

(2) Compressed air flows from the exit of the HPC into the diffuser case and combustor section. During entry, the airflow is made straight while the contour of the inner diffuser case lets the air expand before it moves to the combustion chamber. Metered fuel is supplied to the combustion chamber through 18 fuel nozzles and the fuel and air mixture is burned inside the combustion chamber. The HPT 1st stage vanes point the high temperature and high velocity gases out of the combustion chamber to supply the turbines and make thrust at the exhaust nozzle.

** ON A/C NOT FOR ALL

2. Description of the Diffuser Case Module

Diffuser Case Module ** ON A/C NOT FOR ALL

[Rev.10 from 2021] 2026.04.01 02:49:27 UTC