is there in a big 747? To move all the flaps and rudder, and anything else is moved by the fluid. Reason I ask is a few years ago I was sitting right behind the wing when the flaps were moving. It looked like nothing but hydraulic lines there.
2007-03-26 14:54:02 · 4 answers · asked by johN p. aka-Hey you. 7 in Cars & Transportation ➔ Aircraft
Did you know that the rear engine on a DC-10 is longer than the entire length of a DC-3, also known as a C-47. One of the trivial things that was discussed my first day of working at McDonnell Douglas in Long Beach back in 1988.
2007-03-27 14:05:18 · update #1
prolly about 80-100 gallons of fluid.
2007-03-30 10:50:57 · answer #1 · answered by pizllexam2006 2 · 0⤊ 0⤋
His question was how much hydraulic fluid is in a 747. I don't recall anything about what kind.
The reservoir capacity is a fraction of what is actually in the systems. I would guess at 200 gallons or more? You cannot just fill up the reservoir and expect it to fill up all the lines and actuators. The airplane is orignally serviced by a hydraulic mule that contains many, many gallons and I would bet each system requires the mule to be serviced.
2007-03-29 11:13:35 · answer #2 · answered by Barry W 2 · 0⤊ 1⤋
Skydrol (TM) IS hydraulic fluid. It is a synthetic- as opposed to a petroleum-based fluid to reduce the likelihood of fire in the event of an accident. And, as previously noted, it is pretty nasty stuff if you get it on your skin or (G*d help you) in your eyes.
I worked on DC-10s (roughly same size as early 747s). They had a triple hydraulic system and each reservoir held, when full (if I recall correctly), eight (8) gallons of fluid.
Also note that each landing gear strut contains several gallons of hydraulic fluid (on the DC-10, petroleum-based) to help absorb landing shocks.
Barry - I used DC-10 to illustrate similar-sized aircraft, Scrappy made the inane contention that Skydrol (TM) wasn't a hydraulic fluid
2007-03-27 20:49:57 · answer #3 · answered by Bob G 5 · 0⤊ 1⤋
It is actually Skydrol not Hydraulic Fluid and it is not as much as you think. Though I do not know the exact ammount in Gallons, the lines you see are pressurized to 3000psi and the engine driven hydraulic pumps are able to send the Skydrol to its respected actuators while limiting the ammount used. Sorry I could not answer your question exactly. Skydrol which is pretty nasty stuff is used vice Hyrdaulic Fluid due to high altitude and icing problems.
2007-03-26 22:03:05 · answer #4 · answered by ? 3 · 0⤊ 2⤋