Mechanical engineering is one of the broadest engineering fields.
Mechanical engineers are found in virtually all productive industries, from aircraft and automotive to consumer products and building equipment. In these jobs, mechanical engineers design products, machines, and processes for manufacturing. They analyze, test, and develop these products, machines and manufacturing processes to attain the best performance and durability within cost and time limits. Design, development, and manufacturing of automotive engines and vehicle systems. Design, development, and manufacturing of gas turbine and other aircraft engines Design and construction of electrical power plant energy conversion and generating systems Design, development, and manufacturing of consumer products, ranging from appliances such as refrigerators, washers, and electric drills, to the manufacturing systems for producing facial tissue and processed foods and packaging of these items Design and specification of heating, air-conditioning, and ventilating systems used in aircraft, automobiles, and buildings Analysis of the complex flow of gases and fluids such as air flow in aircraft inlet ducts and fluid flow in hydraulic and pumping systems Study of heat flow, ranging from boilers and automotive radiators to heat management problems in orbiting spacecraft.