INTRODUCTION

1.1 INTRODUCTION

Aircraft pneumatic system deals with the controlling of bleeding pneumatic from the sources, as well as distribution of the bleed air to service points. The system controls the flow, pressure and temperature of the bleed air. The bleed air goes to the pneumatic actuators for transmission of forces to actuate devices, ECS system for cabin air-conditioning and pressurization requirements, cargo heating, wing anti-icing, cooling and ventilation of avionics compartment, wind shield system etc.

Modern pneumatic system includes:

v     Bleed control valves

v     Check valves

v     Over pressure valve

v     Pre-cooler

v     Pneumatic Controllers

v     Temperature sensing units

v     Pressure sensing units

v     Pneumatic supply ducts/manifolds

v     Pneumatic Control Panel