Ten days have passed since the completion of the saucer-shaped spaceship. Zhao Yu finally accumulated enough technology points to build the U-shaped spacecraft.
The bare metal consumes only three times more resources than the saucer-shaped spacecraft, but after adding weapons, the resources consumed skyrocketed.
Especially the two U-shaped spaceships equipped with star destroyer cannons. The resources consumed to manufacture one can produce fifteen saucer-shaped spaceships.
After seeing the actual U-shaped spaceship, Zhao Yu felt that it was worth spending so many resources.
"The U-shaped nuclear-powered spacecraft is 158 meters high and 3180 meters long. It uses second-generation nuclear fusion technology..."
"Carrying full fuel, you can continue flying for ten years without needing to return..."
"Except for the tail of the spacecraft, weapons can be installed anywhere on the spacecraft..."
After a brief introduction, Uncle Da said: "Sir, the saucer-shaped spacecraft is more suitable for use as a reconnaissance spacecraft inside the planet, and the U-shaped spacecraft is suitable for use as a combat ship..."
"According to the concept of a complete space combat formation, there should also be motherships, frigates, reconnaissance ships, transport ships, supply ships, etc..."
Zhao Yu nodded and said: "List to me the types and functions of the battleships required for the formation, and I will look for them..."
The exchange list does not indicate what is a frigate and what is a transport ship. Zhao Yu needs to define this himself.
Saucer-shaped spaceships and U-shaped spaceships are just one of the most expensive spaceships he has found.
"Mothership: There is no requirement for speed, weapons, or armor. The only requirement is that it is big, big enough, and can carry all the defense facilities needed in space warfare, such as space fighters, small battleships, or humanoid mechas, etc.
Equipment that provides backup support..."
"Reconnaissance ship: It is required to be small in size, fast in flight, sensitive in response, and equipped with stealth functions. It can be used for reconnaissance and surveillance..."
"Frigate: There is no requirement for size, just medium, the equipment tends to be defensive, and a large number of short-range defense weapons can be installed..."
"Destroyer: The size must at least reach the level of a U-shaped spaceship. For regular combat use, it is best to be able to carry a large number of firepower-intensive weapons, and the armor must be thick enough..."
"Cruiser: A battleship that can carry large weapons. At present, U-shaped battleships are quite suitable..."
"Battleship: A battleship capable of carrying super weapons..."
"Transport ship: It is very demanding to be able to carry enough supplies..."
"Supply ship: Small size, certain speed and flexibility, able to quickly reach the edge of the battlefield to supply frontline troops..."
"We still have too little experience in space warfare. All types of warship concepts are designed based on data obtained from the earth..."
"According to your statement, an alien fleet will arrive in two months. My idea is that before that fleet arrives, we must at least form a complete space battle formation..."
Zhao Yudun is very worried. What he lacks most now is technology. Many production lines have not been built.
Moreover, the Spaceship Research Institute is still at the first level, which means that the only ones on the redemption list are first-level spacecraft.
Nowadays, there are only three ways to obtain technology points.
The first is natural growth. You can get up to 1,500 technology points in two months.
The second is to use the title 'Mysterious Merchant' to conduct transaction feedback to obtain technology points. Currently, the theoretical upper limit can be more than 30,000. And with the birth of new production lines, the types of transactions that can be traded will become more and more abundant, and the upper limit of technology points obtained will also be
The more.
Third, you can also get a lot of technology points from the tasks occasionally released by the system.
In the short term, if you want to obtain a large amount of technology points, you still have to take the second route and trade with alien civilizations, that is, trade with the earth.
Of course, he can also choose to lie down and firmly believe that the alien fleet arriving in two months will be friendly and able to trade.
But this possibility is unlikely. According to the consistent argument of the system, the environment of the entire universe is extremely harsh. The laws of the dark forest prevail in most civilizations, and civilizations are in a state of unending struggle.
"The average technology level of the earth is 0.75. It does not pose a threat to us, and we have some contact with you, sir..."
After Uncle Da hesitated for a moment, he said: "Although I don't want to admit it, for now, the earth cannot be destroyed. Trading with them will allow us to develop and grow rapidly..."
"This also shows that our existing defense system is not enough..."
In the past, Zhao Yu didn't know that he was staying on the back side of the moon, and all defense facilities were built around the base.
Now, after knowing where he is, he must protect the earth as well, at least to ensure that the earth will not be destroyed when the alien fleet arrives in two months.
"I understand..."
Zhao Yu nodded slightly and said: "List some technological products that were eliminated early..."
Large-scale transactions with the earth have to be put on the agenda.
The only thing missing is an opportunity.
……
"No. KADP-What is the probability of an asteroid hitting the earth now?!"
"99.99%"
"It is almost certain that this asteroid will hit the earth in six hours..."
"How is the doomsday plan going? How many of the elites and talents in the underground shelter have gone down?"
"The evacuation is almost complete, but there are still a few people who don't want to be separated from their families..."
From the United Earth Defense Agency, Colonel Chu gave instructions in an orderly manner.
Chief Engineer Yang looked ugly and asked, "Is there really nothing the military can do?"
Colonel Chu sighed and said slowly: "There are many plans to deal with asteroids hitting the earth..."
"For example, a nuclear explosion can decompose an asteroid, or multiple spacecrafts can be used to impact an asteroid and change its original orbit..."
"But these measures have all been rejected, and there is no possibility of implementation..."
"This asteroid is not an ordinary asteroid. According to the plan set up by the military, the diameter of the asteroid that can be defended is only 300 meters at most. No matter how big it is, nothing can be done..."
50 kilometers in diameter...
Chief Engineer Yang looked bitter and murmured: "Does God really want to destroy us?"
Back then, the package given to the Earth's dominant dinosaurs was only a 10-kilometer-diameter asteroid, but for humans, it was actually given a 50-kilometer diameter.
If you want the earth not to be destroyed, unless there is a miracle.
Chief Engineer Yang suddenly thought of something again and said quickly: "Is it possible for the aliens to help us?!"
"It's impossible, don't think about it!"
Colonel Chu smiled shyly and said: "Ever since Thomas attacked the alien, the alien stopped answering our calls..."
"Is it possible to communicate via satellite?!"
"An attempt was made during which more than 30 existing lunar satellites were dropped to the ground, and more than ten were captured by aliens, but no feedback was received..."
He sighed and said: "We have really blocked all the way back..."
Chief Engineer Yang was helpless and turned to look at Liu Ning and said: "Liu Ning, you can leave too. Come down as soon as possible before the apocalyptic nuclear war shelter closes..."
Liu Ning pursed her lips. Although she wanted to stay impulsively, she still had her family waiting below.
Just when she was about to say a few words of farewell, her watch suddenly flashed.
Liu Ning became excited and said loudly: "It's Zhang Yixia, we are saved..."