Energy from the stratosphere...

Everyone knows that at high altitude in the Earth's atmosphere there are strong air currents. Therefore, relatively recently there was an idea to use them for obtaining energy from the stratosphere... There are already several projects in which the energy from the stratosphere can be obtained from the use of constant air currents in the stratosphere (more precisely, between the stratosphere and the troposphere, at altitudes of about 9-11 kilometers). According to the plan in the simplest of them, the wind-electric unit must be raised to the height with the help of cable cables. For this purpose, it is proposed to use an aerostat, the shell shape of which will provide the orientation of the unit for obtaining energy from the stratosphere against the wind.

Energy from the stratosphere, it would seem, is practically an inexhaustible source of energy...

Energy from the stratosphere seems to be an almost inexhaustible source of energy, which we get into our own hands, because at such altitudes the wind is always strong enough and constant. However, the practical implementation of the project is rather difficult. But in principle the idea is realizable. The thing is that even the best modern materials combining durability with ease until they make it possible to produce an electrical cable that must serve as a tether of a balloon so that it not only withstands its own weight, but does not overload the balloon too much. After all, using Archimedes' law, you can calculate that every extra kilogram of cargo for a lighter-than-air device makes it increase the volume of its casing by almost a half-cubic meter. All this causes considerable difficulties in obtaining energy from the stratosphere, but the rapid growth of prices for existing natural energy resources and their exhaustibility forces scientists to work fruitfully in this direction.

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