Between 35 billion and 45 billion, this is the space agency's assessment of the cost of developing and manufacturing the Endeavor space station.

For such a man-made product that can be used as both a super-large space station and a spacecraft, the space agency is extremely excited, and the superiors are also very interested in such a huge man-made object, and a special approval of 20 billion yuan, if it can jointly operate the Qianjin space station, it can directly contribute half of the funds.

Of course, the 20 billion is not direct money, but part of it is given to funds, and part of it is for the space agency to participate in the manufacture of some of these modules according to its own ideas.

Speaking of these, Lin Ju felt that it was not a big problem.

Xinyuan is strong in aerospace technology, but lacks high-precision scientific research equipment, so it has always been bought, and it takes energy to develop it by itself.

Cooperation with the space agency provides more access to the most cutting-edge scientific research equipment.

Lin Ju: "That's it, all the 6 crew modules are manufactured by Xinyuan, and the service module will be filled with your equipment and requirements first, but I have a condition, the progress must be fast, and the construction of the Qianjin space station should be completed around October next year." ”

"So fast?"

"You know, most of the constraints on space are capacity, and we've automated most of the modules, which is very efficient."

Academician She sighed again, it is the benefit of treating aerospace as an ordinary industry, which can reduce costs, and specaX and XAP are examples in this regard.

"The cooperation of the Advance is roughly like this, and at the end of the year, the Fifth Academy will have the energy to discuss the details with you, by the way, is your Xinyuan 4 still developing? Number three is enough, right? 247 tons of low-earth orbit capacity is really unprecedented. ”

"Four? Perhaps, the 800-ton low-earth orbit capacity is indeed too exaggerated, and it is all hard topped with hydrogen and oxygen machines, and the cost is too expensive. ”

……

"I can't imagine that one day we will be able to use such a high-thrust solid booster, which is a perfect match for the hydrogen and oxygen machine."

At the base of the desert, a gray long building was built outside the transmission tower in the Gobi Desert, and a 5-meter-diameter white object with a length of 47 meters lay horizontally on a V-shaped cement fixing trough, and the body was firmly fixed by a number of strong giant expansion screws.

This is a solid rocket booster, the kind intended for the Xinyuan-4 supergiant rocket.

As a violent product of the system, the SRB with a single-stage thrust of 700 tons, the S700 is expensive, but it is also really valuable.

This 47-meter booster connects 3 S700s in series, with a total thrust of an astonishing 2,100 tons!

Which rocket is tied to two of these things, the thrust will directly increase by 4200 tons!

If Xinyuan No. 3 is tied to two, it can increase the LEO capacity from 247 tons to 324 tons, a direct increase of 77 tons.

If you don't say that the solid thruster is a rocket artifact, it can increase the capacity simply and violently, and the classic way of use is to use the high-thrust solid thrust as a booster, with a small-thrust high-specific impulse hydrogen-oxygen engine at the core level.

The high-thrust solid thrust finds a way to send the core stage out of the atmosphere, and then the high-specific impulse hydrogen-oxygen engine puts the rocket into orbit, without the need to develop a high-thrust liquid engine.

The only drawback is that it is too expensive, although the shell can fall into the sea and then be fished up for reuse, but the solid rocket is not worth the shell.

However, the S2100 in the desert base is not used to build rockets, but is planned to be prepared for the unmanned version of the H1, that is, the launcher prepared for the new Shenlong project.

The SL-1A was deployed in space for three months, and the day before yesterday it returned to the surface for maintenance and airframe inspection.

The performance of this hastily modified prototype is very good, with high power generation, strong mobility, and it can be operated continuously in space for about 1 year after testing.

After several months of preparation, the base is ready to carry out a deep transformation of the SL-1A, and the equipment is full of practical combat capabilities.

The most important of these is an 80KW laser, which charges the capacitors through solar panels, and then stores energy to launch an attack, which can be excited once in as little as 15 minutes, taking into account heat dissipation and charging.

The laser of this power can already cause significant damage to the satellite, and the base is ready to use a "Fengyun" satellite that is about to be scrapped for experiments when the SL-1A is sent up next time to see if it can be destroyed.

In addition, the manipulator did not fall, if it really destroyed the Fengyun satellite, it could also be changed to catch it into the narrow cargo compartment of the new Shenlong, and brought back to Earth to study the damage effect.

Although little is known about the X37B, the desert base believes that the H1 has surpassed the former in terms of combat effectiveness and can be deployed in actual combat.

Actual combat deployment, that is, to build about four in small batches, and then use solid rockets as strategic duty equipment, which can be quickly launched.

The 20-ton weight of the H1 is too heavy, and it requires medium and large liquid rockets to be launched, and its preparation time and launch site requirements are far from meeting the combat readiness standard.

Although it is not possible to use the SL-1A in a big war now, it does not mean that such preparations are unnecessary, in a sense, the importance of the SL-1A is on a par with a nuclear bomb.

Four SL-1A, enough to destroy most of the enemy's satellites before they run out of fuel, missile strike satellites are far less efficient and much more expensive.

However, the problem with the standing deployment of the SL-1A is that there is no super-large solid rocket available, and in fact, if you want to use a pure solid rocket to reach a low orbit with a load of 20 tons, the requirements for the rocket's thrust and pull force are much higher than that of a liquid rocket.

At first, the desert base thought of finding the fourth institute to develop a single-arrow body rocket, a three-stage solid plus a one-stage liquid rocket, a total of four-stage rockets to send SL-1A into space, and fill the liquid fuel of the four-stage rocket before launch, which is more time-saving.

But after Guo Shen heard about it, he directly took out the big artifact of S700 and decided to make a miracle.

Three-stage solid rocket, tandem three-section S700, thrust 2100 tons, dead weight 1000 tons, two stages plus a small solid rocket engine, two stages into orbit.

There is no skill, pure and pure vigorous miracle, almost a single stage into orbit, with the powerful thrust of S2100, the SL-1A below 25 tons is sent into space, and the fixed thrust of the two-stage rocket only needs to work for a short time, and it is lost after use, which is not too expensive.

Because the vibration was too great, the S2100 was transported to the site of the desert base in the cargo hold of the An-1250 for testing, and the solid rocket experts of the Fourth Academy gasped when they saw this thing.

The Fourth Academy also has its own high-thrust solid rocket engine program, with a diameter of 3.35 meters and a thrust of 500 tons in a single stage (the original World Line was successful in 2022), which is still in the early stages of the project.

With a diameter of 5.05 meters and a thrust of 700 tons in a single stage, the S700 is simply unimaginable.

When the base ordered the ignition test, the S2100 was started, and the star-shaped cavity column inside began to burn from the inside out, and the entire shell was the combustion chamber and engine of the solid rocket.

Even hiding in the underground control room, but when the S2100 was started, the violent thrust of more than 2000 tons almost tore the earth, and the people underground could clearly feel that the earth was constantly shaking, and the smoke column of the S2100 was too big, covering the entire test site in a few seconds, rolling up the yellow sand in the sky, mixed with the gray smoke masses, which was extraordinarily spectacular.

(End of chapter)