What is BLEED AIR SYSTEM in an Aircraft? | Components and Functioning of Aircraft's Pneumatic System

Hello and welcome to jxj Aviation in this video we will see the air

bleed

system

in an airplane, first let's see

what

an air

bleed

system

is. An air bleed system is a system that removes air from an

aircraft

engine or takes in air from the auxiliary. power unit or apu and distributes it to some other systems in an

aircraft

, the air passes through different ducts, valves and heat exchanger regulators before being distributed to other systems, most aircraft with turbofan or turboprop engines have an air bleed system, how does the air bleed system work if both engines are running?

Bleed air is taken from both engines and then distributed, but if one of the engines is not running or available, then a cross bleed valve is opened and used to supply bleed air for all engines. Single engine users, the cross bleed valve is also opened if the APU has to supply bleed air to different systems or users because by removing bleed air from the engines, the efficiency and maximum thrust produced by the engine reduces which systems require bleed air in an Aircraft bleed air is required in the pressurization system, the air conditioning system, the anti-icing system for hydraulic and water tank pressurization, and for the starter motor.

Bleed air is taken from the engine or APU compressor stages in flight during normal operations. both engines will supply bleed air and the apo will be available as ground reserve the apu will supply bleed air when the engines are not running or available the bleed air taken from the engines will be at a very high temperature so air An air-to-air heat exchanger can be installed to reduce the temperature of the purged air. The air conditioning system takes purged air and cools it in different packages and distributes the cold air in the cabin and cabin. The pressurization system takes in purged air to pressurize.

When the aircraft flies at high altitudes, the hydraulic and water system uses purged air to pressurize the tanks and prevent pump cavitation. How is purged air controlled? The temperature and pressure of the purged air drawn from the engines or APU is measured. If the parameters are not in the normal range, then the purge valves are closed and cut off the purge supply to prevent damage to other systems or

components

. . Which monitors the purge air. Player parameters are monitored by a purge computer. The computer has control of different valves and closes them. It turns off during certain emergencies.

Another important function of this computer is that it monitors any air leaks in the system. A leak can cause overheating damage to other

components

and even cause a fire. If a leak is detected, this computer will cut off the purge supply, so that's it. To watch my video on the bleed air system, thank you for watching. If you like the video, please subscribe and you can continue watching some of my other videos too.