The United States Navy's Office of Naval Research (ONR) has allocated significant funds to develop a unique water-repellent coating for ship hulls. Its purpose is to improve the sailing characteristics of ships. Besides water, he is also "not afraid" of oil and alcohol-containing liquids.
A team of scientists from the University of Michigan is working on the creation of such a coating. It is a transparent, durable substance that significantly reduces the friction of the case, which dramatically increases its energy efficiency and stealth.
The physical background of the process is as follows: the perfectly smooth surface of the ship's hull is wetted with water, provoking friction, which reduces the speed. And with the inevitable overgrowing of the shell with shells, the problem takes on an even greater scale. As a result, up to 80% of the fuel is spent on overcoming friction at low speeds and up to 40-50% at high speeds. As it turned out, a decrease in friction also contributes to greater secrecy, since turbulences, creating noise, which are recorded by acoustic devices, are reduced. In other words, a perfectly smooth body will be as quiet as possible. This can be achieved with water-repellent coatings.
To create such a coating, a database of known chemicals was used, which scientists subjected to complex computer simulations to predict their interactivity. As a result, a transparent rubber-like substance was obtained that is resistant to mechanical and other influences, which can be sprayed and covered with it on various surfaces.