Submarine That Requires No Engine


A propulsion concept has been developed by the researchers for the swimming robots and these kinds of robots can exploit the fluctuations in the temperature in the water for the purpose of propulsion without any need of an engine as well as propellant and power supply. In order to initiate the research, a 7.5 centimeter mini submarine has been developed by the researchers which are equipped with the paddles.

These mini submarines by the researchers and Top Private EngineeringCollege in Jaipur have been fabricated completely by using a multi-material 3D printer. These findings of the researchers have been published in many news papers. The paddles of the submarine have been actuated with the help of propulsion element which is triggered by the two shape memory polymer strips which is previously developed by the researchers.

These polymers have been designed in order to expand the warm water as well as they can power the robot by acting like the muscles. If the water is heated in which the submarine is floated, then the expansion of the muscle can cause the element for quickly snapping a well as triggering a paddle stroke. The geometry and material of the robot have defined the directional motion, force as well as timing of the paddle stokes etc.

Currently, each actuating element has the ability to execute a single paddle stroke and then it should be reprogrammed manually. But according to the Best Engineering Colleges Rajasthan 2016, the task of fabricating the swimming robots with the several actuators is quite possible. For this purpose, a mini submarine has already been made by the researchers through which the paddle can be forwarded with one stroke as well as it releases a coin and negative back to the starting point along with a second paddle stroke in the opposite direction.

These all can be done by the sensing changes in the temperature of the water. The variation of the geometry of the polymer muscle is allowing the researchers of for defining the sequence at which the paddle stroke can be triggered. The thin polymer strip has the ability to faster in warm water and that’s why it responds faster than thicker ones.   

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