Sub-light speed navigation of interstellar spacecraft

The unsolved technical problems of starship are speed, energy and radar detectors. The main purpose of building a starship is to find another planet suitable for human habitation. The earth can't be the eternal home of mankind. With the exhaustion of various resources, human beings will leave here sooner or later, but some people may stay on the earth and develop new energy sources for survival. In addition, if Russia does not have enough energy and faster than light, it is difficult to find such a planet, and making a starship is a long-term project. The best solution is to transform the moon and Mars into planets suitable for human survival, build a large space station in the universe for human survival, and slowly extend to another galaxy discovered by human exploration spacecraft or exploration satellites for human immigration. (The premise is that humans cannot directly move to galaxies that can be immigrated by fast and high-speed spacecraft. If they can't, they can transform a planet more suitable for human survival, or build a small imitation ecosystem.

If human beings emigrate, energy must be the first consideration, so human beings will build a large number of solar panels and solar sails to collect energy or go directly to the sun to collect high heat energy.

Superluminal navigation

First of all, to sail faster than light, ordinary energy cannot meet the huge energy needed by starships. According to the existing technology, antimatter and dark matter are the most suitable energy sources for space warships. Both antimatter and dark matter can provide hundreds of times more energy than nuclear fusion, provided that humans can extract dark matter or antimatter from the universe, but we should not forget that no matter what energy is dangerous, it is very dangerous to extract these two kinds of energy. It is better for human beings to use familiar nuclear energy at this time, and nuclear energy is also promising in the future, because nuclear energy raw materials can be widely extracted from stars, and there are many fission ways of nuclear energy. The main utilization type of nuclear energy in the future is nuclear fusion, which is more advanced than nuclear fission now. In addition, nuclear fusion can produce ultra-high temperature and can be used as a weapon in the future.

In addition, if the size of future starships will be limited by the technology at that time, the size of starships and warships will not be too large, except for some starships with strong armor or starships with huge volume but no fighting capacity. As for the reason, it is natural that the ship is too big and the moving speed will drop sharply. Although there is no air resistance in the universe, there is still inertia. Besides, for the military, it is not good to be too big, because the ship is too big and its maneuverability will slow down. If the mobility is too slow, it will only be suitable for defense, or provide fire support, not suitable for attack.

Therefore, in the future, space fighters and small assault warships equipped with ftl engines or space mecha will be more suitable for attack. As for large warships, perhaps only a fleet is suitable for attack. Small-scale combat large warships can not compete with flexible fighters or mecha only by relying on naval guns and missiles, as well as conventional large weapons such as electromagnetic guns. Maybe you can play the following game. It's just a China game in Europe and America. Westerners are cautious in playing games and science fiction movies. Some weapons can even be made in reality, and the helicopter of Avatar even conforms to the aerodynamic principle. I have to say that we still have a lot to learn in China.