Neptune had expected his reaction to Xu Xingchen, so the test plan was also prepared, and his own ship girl model had actually been completed.

Through scientific research equipment design, the physical performance of the ship girl is simulated, and then the resources are consumed and the manufacturing equipment is produced.

Since he was fully prepared and Neptune was particularly anxious, he started to do the test on the same day.

Xu Xingchen also took several followers and other leaders of the ship girl organization to follow Neptune to the test site, which is the rocket launch site.

Although the launch site does not require a single ship to exit directly, the launch site is the most empty and safe and will not affect other facilities.

A group of people and ships followed Neptune and entered a warehouse next to the launch site, preparing to see the model Neptune prepared.

But when the hatch door opened, a group of ship girls looked at the things in front of them, and were a little confused.

The warehouse area is not large, with a length of only sixteen meters and a width of only ten meters. There is only one thing in the entire warehouse.

It was something similar to a two-arm missile launcher, fixed on a circular chassis with a diameter of more than eight meters.

There are wheels under the chassis, which should be directly pushed to the field outside.

Two flat rockets are fixed on the launch frame. The rocket is about eight meters long and the diameter is estimated to be more than 600 mm.

The other ship girls looked at the scene and subconsciously began to look for the ship girls model. After all, there were already rockets in front of them, but they didn't see the ship girls.

Xu Xingchen looked at the two rockets and felt very familiar. After a brief thought, he clapped his hands suddenly:

"Your Rocket was modified by YJ21?"

Neptune smiled and shook her head and said:

"In fact, it was just using the appearance of the YJ21, and the fuel was replaced with liquid, and there was no load inside. It was just two independent rockets.

"I was originally going to use DF21 to modify it, but later I found that I couldn't use that big. The size of two YJ21s is enough.

"Because we don't need rockets to send the ship girl into satellite orbit, as long as it can be sent to an altitude of about 200 kilometers.

"Because the goal is to launch quickly, it was named the Express 21 simple launch vehicle system."

After listening to it, Xu Xingchen looked around, and then asked with other ship girls’ doubts:

"And what? Where is your ship girl?"

Neptune ran up quickly, jumped to the middle of two rockets, came to the bracket, and knocked on a place behind the bracket.

A cover immediately popped up in front of the bracket, revealing an escape pod about two meters long.

The door of the escape pod opened again, revealing a lifelike model of the ship girl.

It seems to be Neptune, but there are obvious changes, such as the height has increased to 1.7 meters, and the bust has been doubled to the level of Hulun Lake.

However, Xu Xingchen quickly understood that this was Neptune's own ideal state.

Neptune looked at Xu Xingchen with anticipation, as if waiting for Xu Xingchen to complain about her.

However, Xu Xingchen ignored this model and did not recognize it as Neptune at that time. Instead, he nodded and said something else:

"It is indeed safer to let the ship girl sit in this small cabin, but the problem is... this does not match your plan..."

Then Xu Xingchen also walked to the launcher and reached out to knock on the two small rockets that had been knocked down:

"According to your words, you want to load the rocket on a ship, and you want to directly exit the ship. Now, isn't it still the ship girl used to send it on the rocket as a payload?

"If you consider using the most energy-saving method to send a single ship girl to space, you should use an aircraft to launch small rockets, which will save fuel more, right?"

Gu Chu

The other ship girls also immediately realized that this was inconsistent with what Neptune said.

Neptune was very regretful and helpless, but the topic had gone astray, so he shook his head and explained what was happening in front of him:

"It's not that it's not that it's not that it's not exactly consistent. I mainly consider that after the ship girl unfolds the ship's ship's load, the weight will increase by several times significantly.

"If you really launch a ship shipping, you have to enlarge the rocket to the DF17's bullet-body level, and you need to have more than a dozen tons of rockets.

"The most important thing is that such a large rocket is so ugly to tie it to a human-sized ship.

"That can no longer be considered as a rocket tied to a ship. It can only be said that the ship girl tied to a rocket, which is no different from placing it in a fairing.

"Unless it is to directly unfold the hull, design a hull similar to an aerospace vehicle, and unfold the hull and directly out of the atmosphere.

"And that kind of operation will consume most of the size and load on the atmosphere, and will also affect the structure and space in space, which is really not worth the effort.

"So I finally changed my mind and took off with a ship-mounted state and a rocket, but it wasn't entirely a rocket with a ship-mounted state.

"Aren't most conventional rockets classified? Our ship-mounted rockets have also been classified.

"The first stage of my Express 21 rocket is the two that everyone sees. Their mission is to send the upper stage to an altitude of about 200 kilometers.

"Then, I installed the second stage of the rocket on my own ship and used it as a rocket engine for ship and hull.

"After the first stage of departure, the ship is deployed at an altitude of about 200 kilometers, and the second stage of the rocket is used to go to the orbit you want to go, or simply fly to space space.

"The total weight of this Express 21 type launch equipment is less than ten tons, so it is relatively easy to send a ship girl to space alone.

"There are almost no requirements for launch sites and can even be used as equipment on large ship hulls.

"It is really possible to launch anytime, anywhere, and it doesn't require too many professionals. It can be used as a launch device for emergency and daily use.

"Our Long March 5 modified weighs nearly 1,000 tons and has a low orbital load of more than 30 tons.

"But while maintaining the highest security, you can only transport more than 30 ship girls at a time. Comprehensively, it is not as cost-effective as this set of equipment.

"Because Long March 5 was originally a cargo transporter, it is very unprofitable to simply transport individual ship girls to space in terms of space and weight ratio of the load."

After hearing this, Xu Xingchen and the ship girls nodded subconsciously and slowly. Neptune’s plan was very good.

On planets with rich atmosphere, overcoming gravity and atmospheric resistance is the most important part of aerospace missions.

This process consumes a lot of fuel and takes up a lot of rocket weight and space.

As long as the gravitational circle and atmospheric circle are rushing out, the marginal range of the aircraft will increase almost infinitely, because there is no air resistance and gravity in the space environment.

The simplest example is that the earth is 380,000 kilometers away from the moon and the closest point to Mars is 55.71 million kilometers, which is more than a hundred times different.

However, the payload sent to the moon by Long March 5 is eight tons, while the payload sent to Mars is still four and a half tons.

Neptune's compromise method is to reduce the load and weight of the first-stage rocket as much as possible, and send the ship girl to low-Earth orbit at the minimum cost.

Then let the ship girl start the second-class rocket, that is, the rocket engine installed on the ship, and move in a space environment.

Although it is not the most ideal sky-high, it is indeed the most suitable design under the current technological level.

In the future, when you have to travel back and forth between space frequently, you do need a relatively simple transportation facility that can easily send ship girls to space.

For this kind of demand, it would be too wasteful to continue to use large launch vehicles like Long March 5 to simply transport ordinary ship girls, mainly because the launch process is too cumbersome.
Chapter completed!