Pneumatic fluids are typically compressed air or inert gas.
Fluid power's motive force results from the principle that pressure applied to a confined fluid is transferred uniformly and undiminished to every portion of that fluid and to the walls of its container. The resulting net force can then accelerate the load proportionately to the ratio of the force divided by the mass. Fluid Power Advantages Fluid power is used in diverse applications ranging from mobile construction and aerospace equipment to powering industrial machinery and offers several advantages over other types of motive force. The power source can be located where space isn't critical. Because much of the system's size and weight is off-loaded onto the power unit, the individual actuators can be small compared with the power they produce.