pneumatics?

Answer 1

Both pneumatics and hydraulics are applications of fluid power. Pneumatics uses air, which is compressible, while hydraulics uses relatively incompressible liquid media such as oil or water

The advantage of Pneumatics is,
Because the working fluid is (mostly) just air, there is usually no need for a return line for the working fluid and leaks of the working fluid tend not to be messy.

Because air is compressable, the equipment is less likely to be damaged by shock. The air in pneumatics absorbs excessive force, whereas the fluid of hydraulics directly transfers force.

Pneumatics was first described in 60 AD but had been know long before that. It was the first application of remote force to achieve mechanical advantage.

Wiki has good explanation of theory and applications. http://en.wikipedia.org/wiki/Pneumatics

Answer 2

The primary use for pneumatics in large aircraft is for pressurization, air conditioning and anti ice. Air is bled from the compressor section of the engines usually into a manifold where it can then be tapped off to drive an air cycle machine which cools the air for cabin pressurization or through anti ice valves to the wing leading edge and engine nacelles. On a few aircraft, the lear jet is an example, bleed air also is used for windshield defog. Never heard of pnuematically operated brakes or flaps on an airplane other than a blow down emergency nitrogen bottle for some landing gear emergency extentions and emergency brakes like in the Gulfstream. Those are primarily hydraulically actuated.

Answer 3

Noun 1. pneumatics - the branch of mechanics that deals with the mechanical properties of gases
mechanics - the branch of physics concerned with the motion of bodies in a frame of reference.

In aircraft (and big rigs and trains and other things), a pneumatic thing is usually something driven by pressurized air, such as air brakes are aka pneumatic brakes, air is pushed through a line via a compressor that in turn activates the brakes.

Answer 4

Air powered breaks on the wheels, air ram to actuate the flaps, about it really. Hydraulics are more reliable as you don't get water drawn into your system by the compressor, and freezing when you get high enough, then your breaks don't work when you land. most of the time the compressor is running it is just venting it's air, as you don't use your breaks in the air, when you do need it your engine is normally running slow, taxing approach to landing, so the compressors out put is not at its best, then there is the air receiver that is a big lump of weight to be carrying, oh and you can't see air leaks.

Answer 5

Since this is in the aircraft section: Often used as an emergency blow down system for failed hydraulic undercarriage. It's a one-shot system so once the gear is down it's a hanger job to restore it all back to full working condition. It's one 'bl*w j*b' you don't want to hear about!

Answer 6

The Space Shuttle's tyre pressures are remarkably low, at only 50 psi!

Answer 7

Yes, that is the proper spelling of the science of using pressurized gas to do work.

Answer 8

I'm going to say that the answer is Blue, see we dont need a question

Answer 9

Systems that work when pressurised air or gas is used.

Answer 10

Well blow me, a question I understand. Air your views here.