A rotating mechanical device, this component is employed to efficiently store rotational energy. Functioning as a mechanical battery, it resists changes in rotational speed by inertia. An example can be found in internal combustion engines, where it smooths out the power output from the reciprocating pistons, providing a more consistent rotational force to the drivetrain.
Its significance lies in its ability to reduce vibration and maintain a consistent speed, particularly crucial in applications requiring smooth operation. Its historical development stems from early machinery, evolving from simple weighted wheels to sophisticated, balanced designs integral to modern mechanical systems. Its contributions are foundational to the efficient transfer of power and reduction of mechanical stress.