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Propulsion, in physics and engineering, is a process by which an object moves or accelerates. This process can be broken down into two main categories: mechanical (or internal) propulsion and electrical propulsion. Mechanical propulsion uses forces to propel objects, while electrical propulsion involves the use of electric energy to power the object's movement.
In terms of propulsive technology, there are several types of engines that can be used for propulsion:
1.
Crank-acting motors
: These are most common and