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Golden Rivet
25th Jul 2003, 04:49
Looks like the 380 will be first commercial airliner with a 5000 psi hydraulic system

http://www.amtonline.com/amte/newsletter/news.shtml#one

Gr

siddique2
27th Jul 2003, 20:30
Not sure if the old parafin pencil (Concorde) was there first? I know it is >3K psi possibly 4 or 5K? Had a terrible Hydraulic fluid different to any other as well.

used2flyboeing
27th Jul 2003, 23:36
One has to wonder what happens when a 5000PSI hydraulic line breaks ? A 5000 pound spray of hydraulic oil is like a saw - I think FlowSystems water knife operates at 5000 PSI or something.. thats why these things have not been used in the past - Concerning the Concorde oil - I dont know of anything nastier than Sydrol ..

Lost_luggage34
28th Jul 2003, 02:45
Yes - Skydrol in the eye is extremely unpleasant !

used2flyboeing
28th Jul 2003, 03:39
Sydrol on you ****** is even worse - when I got my A&P they used to tell us - take "our" word for it - you need to wash your hands prior to going to the watercloset when working with Skydrol - US military Ive been told still uses mineral based oils . Skydrol is one of the few note worthy things developed by McDonnell Douglas .. the other things do not include Harry Stonecipher by the way ..

LOMCEVAK
29th Jul 2003, 05:14
I believe that Concorde is 4000 psi, as are the Buccaneer and Tomcat (not commercial airliners but still aircraft with higher than normal hydraulic pressures).