AIR BLEED VALVE

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AIR BLEED VALVE

COMPONENTS

ENGINE BLEED SYSTEM VALVES

AIR BLEED VALVE (APU)

ISOLATION VALVE

TERMICO ANTI-HIELO (TAI)

DUCT PRESSURE TRANSMITTERS

VALVULA DE ARRANQUE

PRECOOLER

HOW DOES IT WORK?

The air for the bleeding system supplied by the engines is obtained from the 5th and 9th stage of the compressor section of the engine, when the pressure of the 5th stage is not conough for the system requeriments, the valve of the 9th automatically opens. Compressor stage to maintain adequate airflow for system operation, during most of the flight only air is drawn from the 5th compressor stage.

WHAT IS IT?

Bleed air is compressed air taken from the compressor stage of a gas turbine upstream of its fuel-burning sections. Automatic air supply and cabin pressure controller (ASCPCs) valves bleed air from high or low stage engine compressor section. Low stage air is used during high power setting operation, and high during descent and other low power setting operations. Bleed air from that system can be utilized for internal cooling of the engine, cross-starting another engine, engine and airframe anti.icing, cabin pressurization, pneumatic actuators, air-driven motors, pressurizing the hydraulic reservoir, and waste and water storage tanks, Some engine maintenance manuals refer to such system as "customer bleed air"