Mechanical engineers apply the principles of mechanics and energy to the design of machines and devices.
Mechanical engineering is perhaps the broadest of all engineering disciplines.
Mechanical engineers design and operate power plants and are concerned with the economical combustion of fuels, the conversion of heat energy into mechanical energy, and the use of the mechanical energy to perform useful work. Structures and motion in mechanical systems Mechanical engineers are also involved with the design of structures and with the motion of mechanical systems. There is no piece of machinery in our homes, our businesses, or our industrial plants that was not designed by a mechanical engineer. Manufacturing Manufacturing involves conversion of raw materials into a final product. Mechanical engineers design and manufacture machine tools, the machines that make machines.