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CHAPTER 75
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AIR
TABLE OF CONTENTS
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SUBJECT_______ CH/SE/SU _ PAGE EFFECTIVITY
________ C ____ ___________ and Ballscrew Actuator Assembly VARIABLE BLEED VALVE SENSOR (RVDT) 75-31-70
REMOVAL/INSTALLATION 401 ALL Removal of the Variable Bleed 401 ALL Valve position Sensor Installation of the Variable Bleed 406 ALL Valve position Sensor
VARIABLE STATOR VANE SYSTEM (VSV) 75-32-00
DESCRIPTION AND OPERATION 1 ALL General 1 ALL Component Location 1 ALL Description 1 ALL Variable Stator Vane Actuator 5 ALL General 5 ALL Description 5 ALL Operation 5 ALL VSV Position Feedback Transducer 5 ALL General 5 ALL Description 8 ALL
VARIABLE STATOR VANE ACTUATOR AND SENSOR 75-32-10 (LVDT)
REMOVAL/INSTALLATION 401 ALL Removal of the Variable Stator 401 ALL Vane (VSV) Actuators Installation of the Variable 410 ALL Stator Vane (VSV) Actuators
VARIABLE STATOR VANE ACTUATOR AND 75-32-10
SENSOR (LVDT)
INSPECTION/CHECK 601 ALL Inspection of the Variable Stator 601 ALL Vane Actuator
NACELLE TEMPERATURE INDICATING 75-41-00
DESCRIPTION AND OPERATION 1 ALL General 1 ALL Description 1 ALL
SENSOR - NACELLE TEMPERATURE 75-41-15
REMOVAL/INSTALLATION 401 ALL Removal of the Nacelle Temperature 401 ALL Sensor Installation of the Nacelle 405 ALL Temperature Sensor
75-CONTENTS Page 6 Feb 01/04 R CES
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AIR - GENERAL - DESCRIPTION AND OPERATION
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1. General
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(Ref. Fig. 001, 002, 003)
The air system covers primary, secondary (by pass) and parasitic (cooling
and pressurizing) airflows and the systems used to control airflow.
A. Engine Section The airstream flowing through the engine supplies air systems using propulsion airflow (secondary and primary flows) or ambient air.
(1) Engine anti-icing
(Ref. 30-21-00)
(2) Cooling
(Ref. 75-20-00)
(a) Front and rear bearing sump pressurizing air. (Ref. 72-00-00)
(b) Cooling air.
(Ref. 75-25-00)
(c) Rotor active clearance control and start bleed system (RACSB) (Ref. 75-23-00)
(d) HPT active clearance control system
(Ref. 75-21-00)
(e) Low pressure turbine active clearance control. (Ref. 75-22-00)
(f) High-energy igniter harness cooling air.
(Ref. 75-22-00)
(g) Engine bleed air.
(h) ECU cooling.
(Ref. 75-24-00)
(3) Engine Control
(a) Fuel control system air.
(b) Compressor control
(Ref. 75-30-00)
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Engine Airflow
Figure 001
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