The United States Navy unveiled a working model of a new type of submarine on Wednesday (8 April).
Commander Hazleton demonstrating model sub with new propellors.
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Background: The United States Navy unveiled a working model of a new type of submarine on Wednesday (8 April). The submarine has no rudder or diving planes, but is controlled entirely by an ingenious system of propellors. The Navy calls it a Tandem propellor Submarine.
A fourteen foot working model of the submarine was demonstrated at David Taylor Model Basin in Maryland by its developer, Commander R.E. Hazleton. With Commander Hazleton at the controls, it moved up, down, sideways, rolled and hovered. The submarine is controlled by two propellors in the form of rings wrapped around the hull at each end. The rings are studded with small, variable pitch blades. The two propellor devices give the vehicle what the Navy calls "a high degree of manoeuvrability."
The new propellor system is currently under evaluation by the office of Naval Research. If it proves successful, it will be tried out on full size submarines, and may eventually replace the present system of rudders and diving planes.