DOC AIRBUS | AMM A320FHIGH PRESSURE COMPRESSOR (HPC) MODULE ASSEMBLY - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The High Pressure Compressor (HPC) module assembly is a ten-stage axial flow compressor and is composed of the following parts:
** ON A/C NOT FOR ALL The High Pressure Compressor (HPC) module assembly is a ten-stage axial flow compressor and is composed of the following parts:
High Pressure Compressor Module - General- HPC rotor assembly
- Forward compressor stator and Inlet Guide Vanes (IGVs)
- HPC extension case.
2. System Description
A. HPC Rotor Assembly
The HPC rotor flowpath consists of 3D-aero blisks (bladed disks) at stages one-through-five and individual stage 6-10 blades are secured in dovetail slots of the 6-10 spool. 14 Outer HPC impeller tubes extend radially from the impeller tube support and feed stage 7 compressor cooling air to the High Pressure Turbine (HPT). The Compressor Discharge Pressure (CDP) rotating air seal is bolted to the rear of the 6-10 spool and interfaces with the CDP stationary seal of the combustion section to ensure stage 10 pressurized air is available to the combustor. The HPC rotor accelerates air axially through the high-pressure compressor.
The HPC rotor flowpath consists of 3D-aero blisks (bladed disks) at stages one-through-five and individual stage 6-10 blades are secured in dovetail slots of the 6-10 spool. 14 Outer HPC impeller tubes extend radially from the impeller tube support and feed stage 7 compressor cooling air to the High Pressure Turbine (HPT). The Compressor Discharge Pressure (CDP) rotating air seal is bolted to the rear of the 6-10 spool and interfaces with the CDP stationary seal of the combustion section to ensure stage 10 pressurized air is available to the combustor. The HPC rotor accelerates air axially through the high-pressure compressor.
B. Forward Compressor Stator
The forward compressor stator is attached to the rear of the fan hub frame and comprises the forward compressor stator case and four stages Variable Stator Vanes (VSVs).
The forward compressor stator is attached to the rear of the fan hub frame and comprises the forward compressor stator case and four stages Variable Stator Vanes (VSVs).
C. HPC Extension Case
The HPC extension case contains five individual stages of aft inner stator cases and fixed compressor stator vanes which convert air velocity increase to air pressure rise and directs the air to the next higher HPC stage. The aft inner stator cases contain the stage 7 compressor bleed port.
The HPC extension case contains five individual stages of aft inner stator cases and fixed compressor stator vanes which convert air velocity increase to air pressure rise and directs the air to the next higher HPC stage. The aft inner stator cases contain the stage 7 compressor bleed port.
3. Operation
The HPC section increases the pressure of the booster discharge air for the combustion and provides air for cooling and customer bleed.
The HPC section increases the pressure of the booster discharge air for the combustion and provides air for cooling and customer bleed.