Physics of Hydraulics :: physics hydraulics

Missing Figures/EquationsHistoryThe type of physics that I will be presenting is a branch of smooth-spoken Mechanics. Fluid mechanics studies the physics of gases and liquids.Hydraulics is defined asa branch of science that deals with practical applications of liquid in motion. Merriam-Websters Medical Dictionary, via www.dictionary.comThe science started over thousands of historic period ago with Aristotle (384-322 B.C.) and Archimedes (287-212 B.C.). Many European scientists also contributed to hydraulics, including da Vinci, Mariotte and Boyle.The scientist who discovered the main principle I will be talking about is Pascal.A french scientist who studied math and physics. His work included studying atmospheric pressure level, conic sections and the principles of hydrostatics.After Pascal there is Bernoilli, Franklin and Froud, who all also contributed to the science of hydraulics. How it works (the physics part)The basic rule of using hydraulic power is Pascals Principle.P ascals Principlepressure exerted on a fluid is distributed equally throughout the fluid.Hydraulics uses incompresible liquids so the utilize pressure from one end (small arrow) is equal to the desired pressure on the other end (big arrow).The big arrow is pointing toward a piston that is free to move, and is some generation connected to a rod. When the force is applied, the piston moves up or down.The equations ar equationsOf course, as Prof. Newman says, there is no free lunch, In order to move the large bea, the smaller area has to move a lot in order to move the larger area a little.The larger area is nine times greater than the smaller area. In order to move the larger piston one inch, the smaller piston has to move nine inches. The Uses of HydraulicsHydraulics are used in many ways. Most of them are used everyday and not even thought about.Here are some examples of how hydraulics are used. They are all machines (Im a mechanical engineer)Car BrakesCar brakes work when you p ush the brake pedal, it pushes the small piston. The piston applies pressure on the brake fluid, which press the brake pads on the large pistons. The brake pads come into contact with the brake drum and slows the car down, eventually stopping the car.AirplanesAirplanes and cat valium planes use hydraulics in many places. * Adjusting wings * Putting out/bringing in landing gear * opening/closing doorsReal livelihood HydraulicsUnfortunately applying hydraulics in real life isnt so simple.There are a few things to consider if you are planning on designing and building hydraulic equipment.