……

Xiao Xuanyu, who said eloquently, slid the information display panel of the nuclear fusion rocket to the side of the "garbage can", turned to look at Ren Hong, who was listening carefully, and said: "The British have been studying the engine propulsion technology since the 70s of the last century, and the nuclear fusion rocket is one of the main research projects of the 'Daedalus Project', and the key point of the technology is controllable nuclear fusion. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

As he spoke, he looked at the next one and said:

"This is a German idea, called the 'Bassard ramjet engine'." With a wave of his right hand, Xiao Xuanyu turned a spotlight on the best view of the two, and he added: "The 'Bassard ramjet' shows the German style of steady technical expansion step by step, but it is also self-defeating because of this. ”

"Almost all of today's rockets and new engine technologies, including those mentioned above, face the same fundamental problem, that is, if you want more acceleration, you need to carry more fuel, and the problem is that carrying more fuel means that the mass of the aircraft increases, which in turn reduces the acceleration, almost an endless loop."

"'Bassard ramjet'?" Ren Hong was stunned for a moment, and some information related to it immediately appeared in his mind, and when he thought of this, he immediately shook his head again and again, and said with a smile: "No wonder the Germans just imagined, the so-called 'Basad ramjet engine' is funny, this engine technology is too unreliable, completely deviating from the original design purpose, I can make a bold judgment, this thing will always only exist in the imagination, and those who dare to invest money are either more money or stupid." ”

"Indeed!" Xiao Xuanyu said with a smile, clicked on the spotlight screen with his left hand and waved it lightly, and threw it aside, which was equivalent to clicking on this engine technology.

In the eyes of the two of them, the Germans were indeed funny, and the "Bassard ramjet" proposed an unreliable solution to the problem of the dead loop.

According to the Germans, the "Bassad ramjet" is also a nuclear fusion rocket, but the way to obtain propulsion power is not to rely on nuclear fuel, but to use hydrogen ions in space, and they envisioned using a huge electromagnetic field to suck hydrogen ions into the engine.

But how many hydrogen ions can there be in the almost vacuum of space? If such a scenario is to be realized, it is almost impossible to achieve the range of electromagnetic fields in the range of thousands of kilometers. In order to solve this problem, the Germans proposed a very comical way to use artificial means, that is, to launch fuel from the earth in advance on a calculated course, and then allow the spacecraft to obtain fuel along the way without the need for a huge electromagnetic field.

This kind of idea is estimated that even the original proposer himself will feel unreliable, let alone others, no wonder Ren Hong shook his head again and again when he heard the 'Basad ramjet engine', and eliminated it without hesitation.

Xiao Xuanyu paused, and said: "The following is the lightsail engine technology, we have achieved it, but the shortcomings are also obvious, whether it is the lightsail front engine propulsion technology or the technologies listed above, there is a similarity, it is limited to short-distance travel, and it is inefficient." For example, our lightsail front-propulsion engine technology can travel a maximum distance of 100 days between Mars and Earth, which is already very fast according to the traditional propulsion method. ”

"But this kind of speed and efficiency is still not the usual sign of K2 speed, what about a little further away? What about Jupiter, Saturn, and even the Kuiper Belt at the edge of the galaxy? How much time does it take to waste sailing? Moreover, the light sail has a fatal heel after it is deployed, the front engine makes it impossible for the Mars Express to cross the asteroid belt at all, which means that it can only move within the asteroid belt. ”

"Well, I'll listen, you go on." Ren Hongdao.

Xiao Xuanyu nodded and continued: "The above engine technology can basically be ignored, I still have two plans here, such as the 'hyperspace engine', if the universe has more dimensions, does that mean that the spacecraft that can use the 'hyperspace engine' can shuttle through the multi-dimensional space at high speed?" ”

Ren Hong shrugged his shoulders and said, "Hyperspace engine? This is almost incomprehensible under the system of modern laws of physics. ”

"Indeed, then there are wormholes! However, this is a point to consider for K3-level civilization technology, and it is not in the K2-level standard speed range. Xiao Xuanyu said, and then called up a last display panel, and said: "What I said earlier can be ignored, but this may be something that should be paid attention to-El Cubir engine technology concept!" ”

"Curvature engine?" Ren Hong looked at it curiously, and had some thoughts in his heart, but he hadn't said it yet, he wanted to hear the other party's opinion first, and said, "What do you have about the curvature engine?" ”

The "Elkubir engine" is the so-called "curvature engine", also known as the "warp engine".

This technological idea is famous all over the world, thanks to the warp engine that appeared on the "Enterprise" in the movie "Star Trek", it can be said that it became famous.

Seeing Ren Hong say this, Xiao Xuanyu thought about it and said: "The El Kubir engine, or the warp speed navigation, is to use the loopholes in the laws of physics to break the unsurpassable limit of the speed of light and achieve faster-than-light flight. ”

"However, the Elkubil engine has many unavoidable problems, the first of which is the so-called 'exotic matter', which is not yet known to be the so-called 'exotic matter', a particle with negative mass and extremely negative pressure, what exactly is the 'exotic matter'?" Saying that, Xiao Xuanyu shrugged his shoulders and asked himself, "Antimatter? ”

He added: "In addition to the so-called indispensable 'strange matter', one of the theories, that is, the energy required to maintain the 'warp bubble' is theoretically more than the total energy of the universe, and the warp speed will also produce a large number of radiation sources, threatening the life safety of the crew, and more importantly, whether the so-called 'strange matter' exists?" Without that, warp sailing is not a problem, and the fact that there is no signal transmission during warp sailing means that the crew can't control the ship while warpping it, and I don't think even a seasoned crew member would want to fly such a ship. ”

Xiao Xuanyu said helplessly: "The Elkubir engine technology is the ideal K2 speed, but it is almost impossible to achieve. ”

"And." Ren Hong stared at the protagonist of "Star Trek" displayed on the spotlight screen, and said: "Another point is practicality, the energy required to sail at warp speed cannot be done even by the sum of the current output energy of the entire human society, which determines that warp speed sailing is too luxurious. In addition, if the ship equipped with the El Cubil engine will be in an awkward situation, faster than the speed of light, how many times the speed of light? Ten times? A hundredfold? Not to mention the consumption of energy, how big is the universe? It would take 1,000 years to cross the Milky Way at 100 times the speed of light, let alone travel across galaxies. ”

………

… (To be continued.) )