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How do submarines work? What kind of technology does it use?

by | Mar 26, 2022 | Technology

Oceans are most turbulent where the wind meets water: on their surface. The waves that race across the sea is a sign of energy, originally transmitted by the Sun and whipped up into winds, racing from one side of the planet to the other. Ships battle and lurch across tough seas where no fish—worth its salt—would ever swim. Sailing ships make good use of winds, harnessing the gusts of air to make a very effective form of propulsion. Diesel-powered ships stay on the surface for a different reason: their engines need a steady supply of oxygen to burn fuel. In theory, it should be much easier for ships to swim under the waves where the water is calmer and puts up less resistance; in practice, that creates a different set of problems.

If you’ve ever gone snorkeling or scuba diving, you’ll know that life underwater is very different from life on the surface. It’s dark and difficult to see, there’s no air to breathe, and intense water pressure makes everything feel uncomfortable and claustrophobic. Submarines are ingenious bits of engineering designed to carry people safely through this very harsh environment. Although they were originally invented as military machines, and most large subs are still built for the world’s navies, a few smaller subs do work as scientific research vessels. Most of these are submersibles (generally small, unpowered, one- or two-person submarines tethered to scientific research ships as they operate).

Submarine. It is a special vessel in the modern world. There is no answer to destroy any warship, including ships, from naval bases to land or air. It is equally proficient in marine science, rescue operations, various research activities, inspections, and maintenance. So every country in the world is running after the submarine to show its strength and power.

Bangladesh also took part in this race by adding two submarines to their fleet in 2016. Like other ordinary ships, it floats in the sea. But its specialty is that it can disappear from the chest of the sea to take part in any secret mission. Can carry out activities by hiding in the depths of the sea.

There are some submarines that can be hidden under the sea for up to 25 consecutive years. Many of us do not know how a submarine can sink underwater for so long. And how is that horrible life on the seafloor? Let’s find out from today’s discussion of Geotel Bangla.

One Ordinary ship is floating because the lower part of the inside of the ship is hollow because the volume of water that the ship removes weighs more than the weight of the ship. In this case, an upward gravitational force acts on the ship by water which is called buoyancy.

But a submarine or submarine is different from other ordinary ships. This is because the captain of a submarine can keep the ship afloat at will and submerge it at any time if necessary.

To do this, the submarine has a special tank inside which the ship is sunk or floated by filling it with air or water as required. This special tank is called a ballast tank.

When a submarine needs to be floated, its tank is filled with air. When the tank is filled with air, the submarine becomes lighter than the water outside. As a result, it floats easily on the water.

Again, When the captain decides to sink the ship, the air in the tank is blown out by an exhaust pipe, and at the same time, the tank is filled with water again. When the tank is filled with water, the weight of the submarine outweighs the water outside. As a result, the submarine sank easily.

A special air delivery device is used to fill the submarine tank with air. Tanks are filled with high-speed, high-pressure air to lift ships above the water in an emergency.

Let’s take a peek inside the submarine. Living in a submarine. The matter may seem very exciting and fun to you. But underwater sailors face daunting challenges every day. One of the major problems facing the submarine is the quality of the air inside it, the supply of clean water, and the maintenance of the temperature.

The fact that we don’t breathe from the air is actually related to 4 gases. These are nitrogen, oxygen, argon, and carbon dioxide. When we are not breathing heavily, we take in oxygen with our breath.

Again, when we exhale, we expel the polluted carbon dioxide from our bodies.

Imagine that you are trapped inside a sealed tube with your friends, and only the air that was able to get in when you closed the tube is left.

Now the problem is the same. Since you have been shut down, no new air can enter and no air can escape from it. Here, all the submarines work in exactly the same way that you have imagined for so long.

Three things are very important for a person to survive in a submarine.

First. The inside of the submarine needs to be filled with the necessary oxygen for the sailors to breathe. For this, oxygen is usually supplied from pressurized tanks. Oxygen levels in the air are monitored by a computerized system and oxygen is supplied to the sailors as needed.

 

Secondly. It is also important to expel the carbon dioxide that builds up in the air after sailors breathe. Otherwise, everyone may die in the reaction. A device called a “scrubber machine” removes carbon dioxide from the air through soda lime.

Finally. The humidity created by respiration is likely to increase the density of the air inside the submarine. Which may result in damage to ship parts. This problem is finally solved by a method called a dehumidifier.

We all know why humans, without water, no animal can survive. Since it is not possible to supply water to city corporations or municipalities in submarines, the sailors of the ship have to make arrangements to produce safe drinking water in a different way.

Most submarines have a special device that can remove salt from seawater and turn it into pure drinking water. In this case, the process by which salt is removed from the water is called the distillation process. There are some submarines that are capable of producing more than 40,000 gallons of pure water per day. This water is used for all the internal work of the submarine including cooking, bathing, eating, and drinking.

The ship also uses a variety of interior components to control the temperature inside the ship and keep the sailors comfortable.

Although a nuclear submarine can stay underwater for 25 years or more, it must come to the surface for fuel or food for sailors. Generally, submarines cannot store food for more than 6 months. After more than 6 months, the quality of food gradually deteriorates.

A submarine can usually travel at a speed of 50-60 kph. For this speed of the submarine, a powerful propeller is placed behind it which is controlled by the dynamics system of the fluid. Each submarine can travel to different depths of the ocean. If you go deeper into a certain range, you have to fall into a terrible accident.

The U.S. nuclear submarine and the Russian submarine are capable of carrying the most pressure among modern submarines. But US submarines still can’t go below 4,000 feet in Surrey. If it goes, the submarine will flatten under the huge pressure of water and will explode at some point.

In 1620, a Dutchman named Cornelius Jacobsjun Drebel discovered the first submarine based on the “ballast tank theory” of the Greek scientist Archimedes. That was the first submarine in the history of the world.

Submarines were America’s main weapon during World War II. That is why only 2% of the American Navy was able to destroy 30% of the Japanese Navy. The list of wreckage included 1 warship, 6 aircraft carriers, and 11 crushers.

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