|09-05-2011, 06:42 PM||#1|
Submarines, specialized vessel that can dive below the surface of the water and also float and can travel under the water surface were used for the first time on a large scale during the First World War for military purposes, and is widely used in the Navy of the great powers like Russia and the United States, France and UK Nations. Non-military submarines are generally used for the purposes of scientific research. Was later to use submarines to load nuclear weapons.
The first submarine designed in 1620 by Von Dutch Drebl where a small submarine designed paddle have 12 sank in the River Thames at a depth of 5.3 to 5.4 meters and went 15 hours.
In 1776 by American David Bushnell Bbinaguasp small made of oak with oval-shaped arm are running the engine for the spiral and he called the turtle used during the American Civil War.
The submarine modern has appeared when possible Processing boat electric motor designed by American John Philip Holland and by adding the device designed by the Swedish Thorsten Nordenfelt to a Holland is working on throwing torpedo into the ship became a submarine, an effective weapon has been named the submarine Holland was unloaded at the port of Iliesbet, New Jersey . In 1897 and went above the water machine is working when gasoline and electric engines working sink fed by batteries in the totals were later replaced by a machine because of the viability of diesel gasoline to ignite.
During the First World War the Germans had submarines called making boats along the Po, which was one of them 87.3 meters by 8 meters.
In 1929 the submarine was built French Surkov was 120 meters long and 9.8 meters and a display was located in front of the submarine Medfaan 203 mm.
The Germans invented a device known as Henwrkl allows the introduction of air into the submarine during its existence beneath the surface of water has led to increase the speed of the submarine has increased significantly.
With the passage of time has become a nuclear-powered submarines have been in 1954 has been the emergence of the submarine Nautilus with a volume of 103.3 meters in length and 8.6 meters wide and can dive to a depth of 229.3 meters. 1958, the submarine Nautilus, the first submarine to reach the North Pole has been through the discovery of north-west sea lane.
The idea of ***8203;***8203;the submarine and its evolution
The idea of ***8203;***8203;modern submarines, based on Archimedes law of buoyancy. Vaguasat contain modern containers from which to control the intensity of submarine and then control the depth of the water. Different forms of containers from the submarine to another.
Diving under the water and rise to the surface
When the download is intended submarine beneath the surface of the water valve is opened the top and bottom of the container in the submarine so that the water is replaced air rises an average density of the body of the submarine down to a certain depth beneath the surface of the water.
But when they are lifted to the surface by opening the valves are inferior submarine and pumping compressed air from the top of the submarine is a dump of water decreases the average density of the body and causing the surface to
When you are in control of the depth of the submarine and relegated to the bottom or are climbing through the slides on the front side and back of the tower and the submarine.
When you control the direction of left or right, are through the slides, "fins" on the rear of the submarine through the design of the vertical and lateral fins on the rear of the submarine.
All ships and submarines as well as to Hadf water higher than the weight. Or other words that it weighs less than the weight of the water is displaced if they are engulfed in water. In order to submerge under the water, must work to increase the weight. There are tanks in the submarine can be filled or emptied with water drops water Balhoaoualamadgot want to get them on the surface of the water.
I usually use the submarine reservoirs front and back of the dive or rise above the surface of the water filling the reservoirs with water or air Mlihma. (Note: This is what you do where there are fish to have a gizzard air in the abdomen fills with water and empties). During the transmission of the submarine under the water reservoirs are filled with water. A type of submarine reservoirs contain those parallel to the body of the submarine under the outer wall of the left and right. As to precisely adjust the rear are used for this purpose smaller tanks, and these are usually found near the center of gravity of the submarine, or be external and isolated along the submarine body in order to avoid a coup.
Range water pressure on the walls of the submarine between 4 MPa (40 atmospheres) of the submarine made of steel, and 10 MPa (100 atmospheres) of the submarine Russian type K-278 Komsomolet and walls made of an alloy of steel containing titanium. While changing the external pressure effect on the walls of the submarine to rise and go down in the water, keep the air pressure inside it does not change.
How to land the submarine and go under water without drowning?
Submarine is a ship, although her weight was lighter than the weight of the ship and as we know are going ships Ootsobh over the water in rivers and seas. And a private submarine must be lighter than regular ships wherein reservoirs or tanks. If he wants the submarine commander to fall out under the water, only has to issue an order Vtemtli these reservoirs or water tanks, increasing the weight to a certain degree and the ability make it down under the water to disappear from sight.
Submarine under the water landing by helicopter propellers, such as those we see in the helicopter, and also have fans of introduction to horizontal move forward or backward or in any direction.
And do not even ask how do you see a submarine on its way while it is under water .. I say: use the submarine for this purpose binoculars called (Alberoscob) is a long tube can be raised above the surface of the water, and mediated by the mirrors can find their way, this is of course to the marine compasses and latitude and longitude, maps, marine minute.
And moving over the water submarine diesel engine and an electric motor under the water, and in recent years has been the use of atomic energy drive moving.
As to how the submarine ascend to the surface - surface water - what is it but to empty tanks or tanks that have already been filled for the fall and becomes lighter in weight and thus float and ascend to the surface.
Source: Arab Forum for defense and armaments
الصور الصور انا اسفة جنيت معاهم ما حبوش يطلعوا
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|09-09-2011, 08:05 PM||#4|
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