Home > Propulsion method
For a list of space transport methods, see spacecraft propulsion.For water propulsion, the most common types are underwater propeller, water jet, and for nuclear submarines, magneto-hydrodynamic. Sails are also common, and historically represented the most significant form of early propulsion for large watercraft. Paddles or oars were probably the earliest form of water propulsion.
For air propulsion, the most common types are propeller, turboprop, turbojet, ramjet, scramjet, and rocket propulsion.
For ground propulsion, virtually all of the above have been used at one time or another. Most ground vehicles use wheels of one sort or another, but the power plant used to drive them can vary widely. In modern times, most vehicles use some form of internal-combustion engine, with electric motorAn electric motor converts electricity into mechanical motion. The reverse task, that of converting mechanical motion into electricity, is accomplished by a generator. The two devices are identical except for their application and minor construction detais supplementing them. Historically, vehicles were drawn by animalSubkingdom Parazoa Porifera (sponges) Subkingdom " Agnotozoa" Placozoa Orthonectida Rhombozoa Subkingdom Metazoa "Radiata" Cnidaria Ctenophora (comb jellies) Bilateria Protostomia Acoelomorpha Platyhelminthes (flatworms) Nemertina (ribbon worms) Gastrotris.
For these and other types of transportation, see transportFor other article subjects named transport see transport (disambiguation). Transport or transportation in American English, is the movement of people and goods from one place to another. The term is derived from the Latin trans meaning across and portare.
Propulsion
