Help with this aircraft pneumatics question??? how to make aircraft pneumatics throughout flight??? Thanks?

Question

can anyone help me with this question on pneumatics aircraft engineering???
Using a variety of diagrams e.g from civil aircraft inspection procedures. or from a boeing 747,777,737, airbus a320,a340, a330, identify the pneumatic power system supply requirements from engine start up and actions taken by crew during taxiing, takeoff and landing. You must identify the systems down to component level.
Links would be good, either info or diagrams.
help from you ect... Thanks

Answer 1

That's tough without mauals. Keep in mind, that once you know a system such as pneumatic, it will be very similar for most aircraft of the same category. The requirements in terms of specific pressures, distribution etc will differ from machine to machine, so it comes down reading the proper publications.

Here is a link to the 737

http://www.b737.org.uk/pneumatics.htm

It talks about how the system is supplied (engines, APU, GPU), distribution through valves, limitations etc. It even has some schematic diagrams to help you understand it.

I hope this helps, good luck

Answer 2

Well what do you want to know. It sounds to me like you want to know about the O2 system and not the pneumatic system. As far as I know the crew O2 system is comprised of a supply bottle and masks, as well as portable O2. The passenger system is made up of individual generators that are chemical based. When you "tug the mask to start the flow of oxygen" you are actually triggering a pin that fires into the generator. While this generator burns the emmision is O2. The Pneumatic system is completly different. It is supplied by bleed air from the engines or the apu. This air supplies your pressurization air, anti ice, airconditioning/heat and starting air as well. Its controlled through ducting with many shutoff valves as well as isolation valves.

Answer 3

I thought the aircraft you mentioned were hydraulic engine starting, not pneumatic.

Air operated systems are only generally used for emergency operation of failed hydraulic systems.