A small spaceship with too much acceleration and a high degree of flexibility, but it is completely unsuitable for humans and can only be used as a drone.

Xu Yunjin was suddenly a little embarrassed. In fact, it was he who asked Professor Romon to study this small space shuttle, but now it seems that it is not very useful.

This space shuttle is small, uses a lot of light metal, and sacrifices certain properties to enable ultra-high maneuverability.

In his mind, a combat ship should be like a fighter jet, and the high maneuverability is always better.

But he forgot that high mobility requires high acceleration to achieve, and human physical fitness is not up to standard, and it is impossible to maneuver if you want to.

Now, it is no longer the era of individual heroes, and the power of the individual body is too small compared to the machine.

“…… It's not useless. ”

Yu Yifeng looked at the various parameters on the screen, he sighed and said: "Actually, it's already very good, its individual combat ability is good, the cost is quite cheap, if you use unmanned driving, remove the life-sustaining device and other miscellaneous things, the cost can be lower, and it can be manufactured in batches." ”

“…… In a way, high maneuverability is always good. It is good to use as a drone. ”

"Also, if our life sciences can go one step further and strengthen the human body, then this kind of spaceship can be used. Like what titanium bones, strengthen blood vessels, strengthen internal organs, and so on. After all, drones are susceptible to electronic interference, and humans don't have this problem. ”

Yu Yifeng said softly: "In other words, a large amount of perfection can also give birth to a group of super soldiers......"

Xu Yunjin was stunned, this was something he didn't expect, superhumans could withstand 30 times the gravity of the earth in an instant! The two discussed it privately, and Yu Yifeng slightly revealed the relevant progress of Perfectin, which has appeared willpower potions, started animal sex experiments, and so on.

Immediately after, he turned back and said, "Mr. Romon, are there any other models?" ”

Professor Luo Meng nodded hurriedly: "Of course there is!" ”

After so many years of research by their entire group, it was impossible for them to come up with just this small space shuttle that could only carry two people. He clicked on another document on the screen, and a spectacular model popped out.

He pointed his finger and said, "This is an enhanced version of the Victory spacecraft, which I will call the Aircraft-001, or A-001 for short, and it can be used as both a combat ship and a cargo ship. ”

"It is about 30 meters long, about 18 meters wide and high, made of a large amount of light metal, and has a rated load weight of 640 tons."

"The maximum speed is about 300 kilometers per second, which is about one thousandth of the speed of light. However, the overall maneuverability is not as good as that of a small space shuttle. To reach this top speed, it takes six hours of pushing time. ”

This is a real spaceship, because after all, it is large and carries a lot of energy, and its maximum speed is faster than that of a small shuttle.

It uses the latest ion engines and is also much faster than previous Victory spacecraft. If this spacecraft were to travel between the Earth and the Moon, it would only take a few hours, less than half a day.

"The A-001 should be the main model in the future, and we can also modify it slightly to form various variants." Dr. Romon turned the computer screen around and headed towards Yu Yi Feng and the others!

Yu Yifeng looked at the various parameters on the screen and studied them carefully for a long time. Including the A-002, A-003 and other models in the back, they are all variants of A-001, but he is still not satisfied!

The drone of the green light man has reached one-thirtieth of the speed of light, and now humans can only reach one-thousandth of the speed of light, of course he is a little dissatisfied.

He asked, "Isn't it the latest ion engine?" How can you only achieve this speed? By the way, what technology does the green light man's drone have, and is there controlled nuclear fusion technology? Why does it fly so fast? ”

Dr. Romon was stunned, and he explained: "The drone of the Green Light Man also uses a similar ion engine, but the energy is still nuclear fission energy...... It's weird, but that's the way it is......"

"The reason could be...... It is difficult to miniaturize controlled nuclear fusion technology. "Speaking of which, Dr. Romon is also very regretful, there is no nuclear fusion, what a pity.

Yu Yifeng nodded, he actually knew this, if there was really controlled nuclear fusion technology, scientists would have been shouting for a long time.

However, he has no doubt that the green-light civilization has achieved controlled nuclear fusion. It would be a big joke if an interstellar civilization could not achieve controlled nuclear fusion.

But miniaturizing controlled nuclear fusion in a small drone may not be an order of magnitude technology......

After all, nuclear fusion is not as simple as nuclear fission, and now mankind has not even touched the threshold, at most...... I can only say that I saw the threshold.

"The green light drone has brought a complete set of material technology, small fission energy technology, intelligent operating system, and more efficient ion engine, etc. One of the most critical is the ion engine......"

Dr. Romon flipped through a pile of data from his computer and drew a delicate model of it, which is the culmination of the wisdom of the electronography experts over the years: ultra-high-speed ion-propelled engines!

The ion engine, that is, the plasma engine, is a kind of electric propulsion system, which has been quite mature, and the main medium of its application is plasma. In the past, satellites on Earth used this kind of engine, but they had very little propulsion, unlike the current one.

It uses the Lorentz force to drive a spacecraft in reverse by accelerating charged atoms or ions through a magnetic field, the same principle as particle accelerators and railguns.

Compared with the traditional chemical push, it is too outdated, consuming a huge amount of energy, but the final kinetic energy brought is not large.

The first moon rocket, Saturn 5, is a typical example of chemical propulsion. Its first stage is loaded with 2075 tons of liquid oxygen kerosene propellant.

Once the engine is ignited, it can "drink" all of these "drinks" in 2 minutes and 34 seconds.

The hot gas is ejected at a speed of 2,900 m/s, but it is only enough to send 47 tons of payload to the moon.

Of the total 3,500 tons of thrust that can be generated, a significant part is used to "tow" the rocket itself and more than 2,000 tons of fuel. Therefore, its "specific impulse" is not high, only more than 300 seconds, and the propulsion efficiency is very low.

"The higher the speed at which the ion engine sprays plasma, the higher the specific impulse, and the latest engine jets plasma at a maximum speed of 3,000 km/s, which is one hundredth of the speed of light! The specific impulse is about 300,000 seconds, which is 1,000 times that of traditional rockets, and the energy conversion rate is as high as 70%! Romon explained.

"If the engine can work all the time, it can reach higher speeds, but due to energy constraints, its speed limit is about 2,000 km/s. In order to ensure safety and reliability, we set the rated speed at 300 km/s. ”

Yu Yifeng nodded silently, this limit speed is actually not bad, reaching one-hundred-fiftieth of the speed of light.

Scientists have calculated that even with powerful nuclear fusion energy, it can only accelerate a spacecraft to 10% of the speed of light, let alone a small nuclear fission.

The faster the speed, the more kinetic energy is needed, and if the speed is higher, there is also a relativistic effect.

It is impossible for humans to become fat in one sitting.

However, he was a little curious: "Why is the Green Light Man's spaceship so fast?" To one-thirtieth the speed of light? It's almost impossible to use nuclear fission energy?! ”