I ask you to build tractors, but you build rockets?

"First of all, a single-stage orbiting aircraft needs to go through the ablation of the atmosphere. If the insulation layer is not properly handled, the single maintenance cost will be very high. Just like H1 and H2, they do not need to be replaced for life, and the insulation layer is maintained per unit area. The cost is less than one-thirtieth of H1, almost negligible;

Therefore, the goal of reducing the cost of word flight to 1 million can be solved by the heat insulation layer, which is the second key issue. "

Serev spoke coherently and confidently, and his words were clear and clear, giving people an unnatural feeling of trust, which surprised others.

This kind of confidence and calmness cannot be faked without many years of leadership experience and strong technical strength.

If Lin Ju knew what they were thinking, he would definitely laugh out loud. It was a joke. Corvo dealt with either marshals or generals every day. He even had a fight with Brezhnev. If he was not confident, who would be?

Moreover, Serev has his own unique personality charm, which can be clearly felt when getting along with him.

Everyone nodded in agreement with his first conclusion. The heat insulation layer technology developed by Xinyuan for H2 is quite advanced. Although the cost is expensive, it has been amortized to an extremely low level over 100 flight missions.

"Second, for fuel, you cannot use a hydrogen-oxygen engine. It is too expensive and too heavy. The maintenance cost of a kerosene engine is also relatively high, so it must be clean. Use methane. It is easier to store methane, and it burns fully without producing residues. It must be used methane;

But the traditional methane engine is not good. With the gas tip engine, it can change the working state to adapt to the atmosphere and vacuum, and can also provide a higher specific impulse. Moreover, find a way to combine the air tip engine and the ramjet engine, all using methane fuel, to reduce the weight again. "

Academician She:!

"This, I'm afraid..."

The rest of the aerospace experts also had a hard time accepting it. Most of aviation and aerospace are interoperable. They were even more surprised that they could understand Serev's ideas.

For intra-atmospheric flight, methane can theoretically replace aviation kerosene, and even has a higher calorific value than the latter. There have been experiments around the world applying methane to jet engines.

But for aircraft, methane requires pressure vessels to store, which is heavier and more troublesome than kerosene, so development is limited.

Serev not only wants to unify the fuel, but also integrate ramjet engines, jet engines, and air tip rocket engines?

In this way, the overall design and weight can definitely be simplified and reduced, but the difficulty...the new technology to be broken through is beyond imagination.

Serev did not respond to the question, but took out his notebook directly from his pocket, took out his pencil and drew some simple lines on the blank page:

"Everyone must know how to combine a ramjet engine and a jet engine. The design of WCR09 can be used. The combustion chamber of the air tip engine is placed at the tail nozzle of the combined engine.

We use an annular air tip engine and add a spindle in the middle of the circular nozzle. This will not affect the workmanship in the atmosphere too much. Then we find a way to use the core engine of the turbojet part as part of the air tip engine, thus reducing the quality of the combined engine. Controlled at about 3 tons, the air tip engine can generate more than 15 tons of thrust when working. "

As a scientist trained by the alliance, Serev's drawing skills were admirable. Several experts circulated the notebook and gained a new understanding of this young man.

Such Serev is indeed worthy of some of his high positions.

After a while, an expert from the three academies sighed:

"It's too complicated and difficult. The aviation part is a big problem. In addition, the annular air tip engine is still basically in a theoretical state. The previous demonstrator was very unstable. It was much more complicated than the bell-shaped nozzle and was dead. How heavy is it? There are many small nozzles in the air tip engine. It needs to be simple and durable. This is not a small problem."

Academician She crossed his hands and was obviously thinking seriously: "However, one kind of engine and one kind of fuel can indeed achieve a terrifyingly low price. There are many ways to put a single stage into orbit, but this is indeed the cheapest. Really Very cheap.”

Serev took the notebook again, and in a few clicks a large delta-wing aircraft appeared on the paper.

"The maximum take-off weight is 200 tons, 10 new combined engines, and the air tip engine is started when accelerating to Mach 10. It can carry 20 passengers or 2 pilots and about 3 tons of bulk cargo. The orbital mass is about 50 tons. Carrying a payload of 3 tons, such an aircraft is enough to provide low-cost space personnel transportation services."

Experts calculated in their minds that the final mass entering the orbit would reach 25% of the take-off weight. This load factor is terrifyingly high. The 10 engines must work for at least 240 seconds in the aerodynamic engine state, and each engine must work for at least 240 seconds. It consumes less than 55 kilograms of fuel while outputting 25 tons of thrust. This places high demands on the gas tip engine. The specific impulse of the methane engine must be increased to an astonishing level. The specific impulse may even be close to that of the hydrogen-oxygen engine!

Although the mass of 200 tons ultimately leaves very little for humans or cargo, it still cannot conceal the superiority of this design: it is cheap, too cheap.

A completely cheap means of accessing space may even reduce the cost of accessing space to less than 100,000 for the first time.

What a tantalizing prospect, just thinking about it is extremely shocking.

Boss: "The development process of this kind of engine will take at least three years before it can be put into practical use."

Serev and Lin Ju made eye contact. The latter understood the situation and directly created a new task in the system panel. After a brief shock, he slightly raised a finger towards Serev.

Serev: "Give us 10 billion, and Xinyuan will solve this problem within a year."

"..."

Everyone looked at the boss, who coughed dryly and winked at Academician She.

Academician She cursed in his heart, Ten billion? With so much money, as long as it is a theoretically feasible thing, the space agency can't come up with it?

So he said: "Ten billion spent on engine technology is not too much, but WCR09 is already a mature technology, so it shouldn't take so much money to solve the air tip part, right?

Xinyuan is confident that it can be solved within one year. Does it already have some technical reserves? "

The boss then remembered that the Xinyuan air-end engine must have a foundation, and NAPE can be regarded as an air-end engine, unlike the space agency that started from scratch.

But you can’t be so big-mouthed like a lion!

At this time, Lin Ju, who had been hiding in silence, finally stood up and interjected:

"10 billion is the total research and development cost of our entire system. If the space agency jointly promotes the aerospace aircraft program with us, half of the funding for the engine will be 4 billion yuan. As for aircraft research and development, it all depends on how much the country provides. Xinyuan will join as a contractor. .”

In fact, what he just wanted to say was 1 billion. The system research institute's task only invested 1 million and the progress increased by 2%. Because Xinyuan, an aerospace engine and aerospace engine, has considerable technical reserves, it is not difficult. Serev just asked for 10 billion. It's really scary.

Academician She: "Then, this will become the final version of the Tengyun plan. The freight will be handed over to others, but in terms of transporting people, this is it."

Serev: "Let me be the chief engineer. In 2018, the Tengyun Project will take off."