NEXEN 964740

Most brakes normally use friction between two surfaces pressed together to convert the kinetic energy of the thing that is moving though other systems of energy conversion may be applied. For instance, regenerative braking converts much of the energy to electrical energy, that might be kept for later use. Other systems convert kinetic energy into potential energy in such stored forms as pressurized oil or pressurized air. Eddy current brakes use magnetic fields to convert kinetic energy into electric current in railing, fin, or the brake disk, which can be converted into heat. Other braking systems transform kinetic energy into different types, for example by transferring the energy.

Some vehicles use a a a combination such as drag racing automobiles with both wheel brakes and a parachute, or planes with drag flaps and wheel brakes lifted into the air during touchdown.