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Hydro-systems On Aircraft  
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Posted (6 years 2 months 2 weeks 3 days 23 hours ago) and read 4599 times:

Hi,
I have to do an aviation college project about hydro-systems on aircraft (which includes systems not only related to hydraulics). As Google didn't give me any specific info, I would like to know if you have any info about general use of hydro-systems on aircraft. Links or any info is welcomed.

Thanks in advance,
Alex

19 replies: All unread, jump to last
 
User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9690 posts, RR: 52
Reply 1, posted (6 years 2 months 2 weeks 3 days 22 hours ago) and read 4576 times:

What are you referring to as a Hydro-System? If you are asking anything about hydraulics, I can help you out since I'm an engineer who works on designing and testing hydraulic systems for the 737.


If you have never designed an airplane part before, let the real designers do the work!
User currently offlineMD11Engineer From Germany, joined Oct 2003, 14127 posts, RR: 62
Reply 2, posted (6 years 2 months 2 weeks 3 days 21 hours ago) and read 4565 times:

Do you mean ATA chapter 38, which is water / waste (potable water systems and toilets)?

Jan


User currently offlineFr8mech From United States of America, joined Sep 2005, 5599 posts, RR: 15
Reply 3, posted (6 years 2 months 2 weeks 3 days 20 hours ago) and read 4547 times:

Look at the fuel systems on high bypass turbofans. Fuel is used to move actuators and valves.


When seconds count...the police are minutes away.
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 4, posted (6 years 2 months 2 weeks 3 days 18 hours ago) and read 4522 times:

Are you referring to Hydraulic systems ie ATA Chapter 29?
This is a good link for the B737.
regds
MEL



Think of the brighter side!
User currently offlineWingscrubber From UK - England, joined Sep 2001, 852 posts, RR: 0
Reply 5, posted (6 years 2 months 2 weeks 3 days 17 hours ago) and read 4506 times:

If by hydro you mean liquid, then that would encompass drinking water systems, sewage systems, liquid chemical anti-ice systems, oil lubrication systems and as already mentioned, fuel systems.
Obviously the biggest and most complex hydro-system is the hydraulics, which is generally responsible for flight controls and landing gear retraction/extension/steering and braking.



Resident TechOps Troll
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 6, posted (6 years 2 months 2 weeks 3 days 14 hours ago) and read 4463 times:

Thanks for replies, but the problem is that I am not sure what exactly to look for. As you all said, apart from hydraulics the only systems for a/c are water/sewege etc. I will have more info about it tomorrow hopefully.

Quoting HAWK21M (Reply 4):
This is a good link for the B737

That's were I tried to find at the first place, but I didn't find anything (apart from hydraulics). My second project is related to pneumatics, but I already have information's about it.Thanks anyway.

Regards, Alex


User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 7, posted (6 years 2 months 2 weeks 3 days 13 hours ago) and read 4454 times:



Quoting AlexEU (Reply 6):
That's were I tried to find at the first place, but I didn't find anything (apart from hydraulics).

Go here:
http://www.smartcockpit.com/

And go to My Aircraft > Aircraft of your choice > Systems

Tom.


User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 8, posted (6 years 2 months 2 weeks 2 days 16 hours ago) and read 4358 times:

What is the difference between pneumatic and hydraulic system on aircraft?

Quoting Tdscanuck (Reply 7):
Go here:
http://www.smartcockpit.com/

Great link ! I didn't know it was free

Quoting HAWK21M (Reply 4):
Think of the brighter side!

That made my day! Welcome to my r/u list.

Regards, Alex


User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 9, posted (6 years 2 months 2 weeks 2 days 16 hours ago) and read 4348 times:



Quoting AlexEU (Reply 8):
What is the difference between pneumatic and hydraulic system on aircraft?

Pneumatic = pressurized air

Hydraulic = pressurized liquid (typically Skydrol or fuel)

Quoting AlexEU (Reply 8):
Great link ! I didn't know it was free

I'm not quite sure how it is free, but it's great that it exists...I'm sure it drives the OEM's nuts.

Tom.


User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 10, posted (6 years 2 months 2 weeks 2 days 12 hours ago) and read 4324 times:



Quoting AlexEU (Reply 8):
That made my day! Welcome to my r/u list.

I'm Honoured.

Check this one too.....
http://www.sjap.nl/

regds
MEL



Think of the brighter side!
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 11, posted (6 years 2 months 2 weeks 2 days 4 hours ago) and read 4285 times:

Can somebody explain the diagram on the bottom of this page
http://www.b737.org.uk/pneumatics.htm

Quoting HAWK21M (Reply 10):
I'm Honoured.

Check this one too.....
http://www.sjap.nl/

Also a good technical web...

Cheers,
Alex


User currently offlineTristarSteve From Sweden, joined Nov 2005, 4052 posts, RR: 33
Reply 12, posted (6 years 2 months 2 weeks 2 days 2 hours ago) and read 4271 times:

Quoting AlexEU (Reply 11):
Can somebody explain the diagram on the bottom of this page

Yes , but it would take a few pages of type. It is the complete air system on a B737 from engine to cabin. Never seen it on one diagram before.
On a type course for engineers, this diagram would take about 4 days to explain .

Reminds me of the Licence exam I did for the B732 for the CAA, the examiner would lay out the disgram on the table and ask you to explain it. After 10 mins he would say, Ok now for the landing gear and you would know you had passed that part.

[Edited 2008-09-09 03:25:38]

User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 13, posted (6 years 2 months 2 weeks 2 days ago) and read 4253 times:



Quoting AlexEU (Reply 11):

Can somebody explain the diagram on the bottom of this page
http://www.b737.org.uk/pneumatics.htm

As Mentioned that would take a lot of typing.But if you could send accross an Email address.I'll try & send accross the Description details.
regds
MEL



Think of the brighter side!
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 14, posted (6 years 2 months 2 weeks 1 day 18 hours ago) and read 4226 times:



Quoting TristarSteve (Reply 12):
Yes , but it would take a few pages of type. It is the complete air system on a B737 from engine to cabin. Never seen it on one diagram before.
On a type course for engineers, this diagram would take about 4 days to explain .



Quoting HAWK21M (Reply 13):
As Mentioned that would take a lot of typing.But if you could send accross an Email address.I'll try & send accross the Description details.

I am just interested in the simple explanation! No need to describe everything...Thanks anyway.

Regards,
Alex


User currently offlineFr8Mech From United States of America, joined Sep 2005, 5599 posts, RR: 15
Reply 15, posted (6 years 2 months 2 weeks 1 day 14 hours ago) and read 4195 times:



Quoting AlexEU (Reply 14):
am just interested in the simple explanation! No need to describe everything...Thanks anyway.

Fold the diagram in half. The sides are virtually identical from left to right. The lower part of the diagram represents the engine (the source of pneumatic power). The upper part of the diagram represents the pack or air conditioning system. The mix manifold is the last step before the conditioned air enters the cabin proper.

If you want details of specific components, just ask about them by name.



When seconds count...the police are minutes away.
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 16, posted (6 years 2 months 2 weeks 1 day 4 hours ago) and read 4172 times:



Quoting Fr8Mech (Reply 15):
Fold the diagram in half. The sides are virtually identical from left to right. The lower part of the diagram represents the engine (the source of pneumatic power). The upper part of the diagram represents the pack or air conditioning system. The mix manifold is the last step before the conditioned air enters the cabin proper.

Thanks !

Quoting Fr8Mech (Reply 15):

If you want details of specific components, just ask about them by name.

What's the difference between red and blue valve? and what is ''le slats''

Regards, Alex


User currently offlineFr8mech From United States of America, joined Sep 2005, 5599 posts, RR: 15
Reply 17, posted (6 years 2 months 2 weeks 1 day ago) and read 4158 times:



Quoting AlexEU (Reply 16):
What's the difference between red and blue valve? and what is ''le slats''

I don't see any valves of different color, but the red ducts normally denote 'hot' air and the blue 'cold' or conditioned air. The blue duct on the engine is fan air used to cool, via the heat exchanger or precooler, the bleed air.

LE Slats refers to the leading edge slats. I'll make a quick assumption, I don't have any B737 background (except for having worked on just about all Boeing jet liners), and say this is the duct for leading edge anti-ice.



When seconds count...the police are minutes away.
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 18, posted (6 years 2 months 2 weeks 1 day ago) and read 4157 times:

http://www.b737.org.uk/images/schemeaircon300small.gif

Quoting AlexEU (Reply 16):
What's the difference between red and blue valve? and what is ''le slats''

The Red lines denote Hot/Warm air,The Blue lines indicate Cool/conditioned air.
If you are talking about the amber "cowl anti Ice" Lt & "Cowl valve open" Lt,then the former denotes If icing has occured in the Nose cowl & the latter is indicating that the Cowl A/I valve is open.

LE Slats....Indicates the line passing between the LE Slats & LE of the Wing to perform WTAI [Wing Thermal Anti Icing].

regds
MEL



Think of the brighter side!
User currently offlineAlexEU From Serbia, joined Oct 2007, 1819 posts, RR: 2
Reply 19, posted (6 years 2 months 2 weeks 16 hours ago) and read 4137 times:



Quoting Fr8mech (Reply 17):



Quoting HAWK21M (Reply 18):

Thanks for the info.

However, it was too late (I should have asked earlier), and I got lower mark because I didn't use that graphic in my project! At least I got to learn more about aviation pneumatics (which I never though of before).

Regards, Alex


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