From backyard log splitters to the huge machines you see on construction sites, hydraulic equipment is amazing in its strength and agility! On any construction site you see hydraulically operated machinery in the form of bulldozers,backhoes, shovels, loaders, fork lifts and cranes.
Hydraulics operate the control surfaces on any large airplane. You see hydraulics at car service centers lifting the cars so that mechanics can work underneath them, and many elevators are hydraulically operated using the same technique. Even the brakes in your car use hydraulics!!!
hydraulic is liquid based, pneumatic is air.
Machines of all types need power. Power allows the machines to do specific kinds of work. Two of the most efficient and compact forms of power for machines are hydraulic and pneumatic systems. Hydraulics and pneumatics can be configured into different types of power sources to lift, lower, pull, push, turn, rotate and move machines carrying tremendous loads. Tools can also be powered to break stone, join steel and cut wood. Hydraulics and pneumatics provide the energy to make work happen.
Hydraulics
Liquid is needed to use hydraulics. It's what makes hydraulics work.
Most commonly to transfer force (like the breaks in your car).
Hydro means water or fluid. Hydraulics uses fluid compression to do its' work.
In cars, air planes, boats and also many constructional machines.
Presses, earth moving equipment and farming machinery, hydraulics is used because it take up less space than the gears that is needed to produce the same power and if hydraulics is treated correct then there is almost no maintenance necessary
Hydraulics extends or retracts a hydraulic cylinder that pushes a lever on the flap, moving it.
The non-compressibility of liquids, and the equivalence of p = F/A (pressure equals force divided by area) explain why and how hydraulics work.
hydraulics
Pascal's principle