In a lot of novels and science fiction movies, a great danger threatens the existence of human beings on the planet, nuclear wars, or pollution, or the scarcity of resources, or otherwise. The film Interstellar Interstellar good recent example of what we are talking about. And always tries to imagine the authors of those novels innovative way to escape from this danger and leave the planet. But, what if mankind has faced a situation like this already? If there was a danger that threatens our very existence, there is no escape for us but to flee, leaving our old house, the earth? It does not concern you at where we are heading to, Vensenfterd it's available. But, is there a scientific method carry out that plan and save our future? Is Cetkvina while since all sources of energy on the planet?
To see our ability to do so, we will begin the necessary energy account initially. After calculated and found that 4 GJ of energy sufficient to eject the man weighed 65 kg from the ground, regardless of the method used, whether a missile or cannon or even a space elevator. And 4 GJ is approximately equal megawatt-hour, which is the average home electricity consumption in almost two months, or about 90 kg of liquid fuels, car or transfer of dry batteries load. And at the expense of the energy needed to escape seven billion citizens, we will find it as 2.6 * 10 18 Gul. This is a ratio of almost 5% of the annual energy consumption globally. Now it would seem easy, but do not rush to reach a final conclusion, there is still a lot of obstacles.
This is calculated from the quantum energy is the energy we needed to get us out only, without anything else, and without employment account for a means to escape itself, any rockets and vehicles that will carry us. This means that 2.6 * 10 18 as Gul is the minimum necessary energy. Had we decided to use rockets, as do NASA with astronauts in the International Space Station flights, it will be much more difficult, because the main problem in the rocket, as it is large in size and heavy weight, they also have to carry the fuel during the flight, which means weight added another.
We said that energy is equal to 90 kg of fuel is enough to carry a person, or vehicle, weighing 65 kg of space. After adding fuel to the vehicle will be weighed 155 kilograms, and therefore you will need for 215 kilograms of fuel, Fsnzad of mobile amount of fuel, thus increasing weight, we need more fuel, too, and so on. But fortunately, the matter will not be up to the stage of the vicious circle, because the same flight techniques. A missile does not carry all that amount of fuel all the time, but what actually happens is that the overall weight of the fuel will decrease with time due to combustion in the flight, and therefore less weight load with time, decreases their need for fuel. The multi-stage rockets currently separates the whole part of the rocket after the end of the cycle in the trip, which greatly reduces the weight, and thus fuel needed to pay the remaining part outside the scope of Earth's gravity.
Using Chiakovski equation to calculate the amount needed to fuel a vehicle that weighs tons, we will need about 20-50 tons of fuel. To remove all human beings (about 400 million tons) will need when permission to tens of billions of tons of fuel, and this without the expense of vehicles that take them to the space until, or cars that take them to areas at all, and even without the expense of water, food and pet weight if they decided to take her weight. And also without the expense of energy required to manufacture all the space vehicles needed to escape all of this number. This amount of fuel will consume most of the fuel reserves in the world, but it is not completely impossible, then at least it is still theoretically possible.
However, he said that the only way to escape is by using rockets? Certainly will not fail to think of solutions and other means? We can, for example, to use a space elevator! Or even confrontational wave of a nuclear explosion to expel us! These crazy ideas already on the table since the beginning of the conquest of space, and some scientists are working on already.
Space Elevator, a fictional easy way to travel to space, but it just seems easy, but in fact it is impossible elevator fanciful yet. The idea says that we will send a satellite linked with a rope or wire space, and will be extended cord and straight thanks to centrifugal forces. Then climb the rope simply, using engines associated with its electric-powered or nuclear generators or even hands if you have the ability. The main problem facing this idea is our inability to manufacture or wire rope of strong material enough to carry all those who influence them power. Vlsnaah such a cord, we will need a new article dozens of times stronger than any other material currently exist. It is hoped currently on carbon nanotubes carbon nanotube, which is probably going to be by force Balkavih. Though the solution to that dilemma will remain some minor problems which engineers will not fail to be resolved for the time.
The other way is to use a proposed nuclear power, but a violent way a little bit, which is exploitation confrontational mighty wave generated by nuclear explosions. If we can manufacture powerful spacecraft and armored enough to bear the shock of a nuclear explosion, then put it in the air in orbit above the area of the explosion, will be sufficient to wave confrontational expelled outside the Earth's gravity. In fact, a nuclear explosion in that case sufficient ability to expel an entire city and not just a spaceship, if borne the ability of shock and did not disintegrate.
Although surprisingly it, it has already tested attempts. In the sixties of the last century, the US government tried to build a spacecraft capable of carrying nuclear force of the blast, and entrusted it to the world in so-called Freeman Dyson Orion Project Orion project. But the project stopped before it is building a prototype so. He says of that experience are against it is not permissible for us to explode nuclear bombs in the atmosphere without any purpose other than to send some people to the space, environmental matter The consequences will be serious and terrifying. The son of George Dyson Freeman Dyson world by issuing a book called nuclear spacecraft story tells the story of the project.
The ultimate answer to the question is still mysterious. Sending a person or even a group of people for the space is relatively easy, but send all humans to space will be almost impossible, Vsiqda matter to the rest of the planet's resources, or will spend on the planet altogether. And if there were a giant disaster probably will kill all human beings, we will have no time but to face it with courage, or to meet death with an open mind.
No comments:
Post a Comment