Mechanical engineers typically do the following:

• Analyze problems to see how mechanical and thermal devices might help solve a particular problem
• Design or redesign mechanical and thermal devices or subsystems, using analysis and computer-aided design
• Develop and test prototypes of devices they design
• Analyze the test results and change the design or system as needed
• Oversee the manufacturing process for the device

Mechanical engineers design and oversee the manufacture of many products ranging from medical devices to new batteries.

Mechanical engineers design power-producing machines, such as electric generators, internal combustion engines, and steam and gas turbines, as well as power-using machines, such as refrigeration and air-conditioning systems.

Mechanical engineers design other machines inside buildings, such as elevators and escalators. They also design material-handling systems, such as conveyor systems and automated transfer stations.

Like other engineers, mechanical engineers use computers extensively. Mechanical engineers are routinely responsible for the integration of sensors, controllers, and machinery. Computer technology helps mechanical engineers create and analyze designs, run simulations and test how a machine is likely to work, interact with connected systems, and generate specifications for parts.

employment of mechanical engineers is projected to grow 5 percent from 2014 to 2024, about as fast as the average for all occupations. Mechanical engineers can work in many industries and on many types of projects. As a result, their growth rate will differ by the industries that employ them. Job prospects may be best for those who stay informed regarding the most recent advances in technology.

Mechanical engineers are projected to experience much faster than growth in engineering services as companies continue to contract work from these firms. Mechanical engineers will also remain involved in various manufacturing industries, particularly transportation equipment. They will be needed to design the next generations of vehicles and vehicle systems, such as hybrid-electric cars and clean diesel automobiles.

Mechanical engineers often work on the newest industrial pursuits. The fields of alternative energies,manufacturing, and nanotechnology may offer new opportunities for occupational growth. Re-manufacturing—rebuilding goods for a new use after they have worn out or become nonfunctional—holds promise because it reduces the cost of waste disposal.

Nanotechnology, which involves manipulating matter at the tiniest levels, may affect the employment of mechanical engineers because they will be needed to design production projects on the basis of that technology. Nanotechnology will be useful in areas such as healthcare and designing more powerful computer chips.