The G550 took off into the air and flew smoothly towards the South China Sea Island.

On the plane, He Ting kept asking about aerospace aircraft engines and other advanced technologies.

Director Wu and He Ting, although they are not in the same system, are at different levels after all.

He Ting reported directly to the patriarch, but he was not.

So He Ting spoke, and Director Wu could only listen.

And no matter how Ren Heting asked, Gu Song didn't say anything. Later, I used the excuse of getting up too early and began to close my eyes and rest.

The plane fell to the ground, and the car arranged by Flint Aerospace to meet it directly pulled people to the Changwen headquarters.

"It's going to be a little longer to stay here in Changwen, so let's go to the apartment and sort out the experience first. The weather is different, also change clothes first, and Zhao Hongtao will take everyone to familiarize themselves with the environment here, and then go to the canteen to meet. The formal presentation will be held in the conference room in the afternoon. ”

These words were addressed to Li Wei and other astronauts.

Director Wu felt that he was also being treated like an ordinary team member. Of course, he was not struggling with whether the accommodation treatment was the same, but seeing that He Ting had already pulled Gu Song inside, he didn't greet him at all.

So he could only go to the apartment area with everyone first, and after he was ready to put down his luggage, he went to Gu Song and them first.

……

He Ting pulled Gu Song and went to the engine test bench.

"What's the hurry!" Gu Song was helpless, "The key task this time is a test flight, not a discussion of technical points." ”

He Ting smiled calmly: "I only noticed that there were intensive tests on your side before, and when I looked at such a large data reflection, I thought that the Candle Dragon rocket engine was improving, who knew that you were doing it so quickly?"

"Oh...... Then some of these tests are indeed improved tests of the Candle Dragon 2 rocket engine. Gu Song looked at He Anzhi, who came to greet him, and then said, "To be honest, this aerospace aircraft engine is suitable for space transportation, but it is not suitable for you to perform some tasks over there." After all, the technology is still the first generation, and the endurance and maneuverability indicators are not good. ”

He Ting disagreed: "Even if this engine itself is not suitable, if you want to achieve single-stage orbit, you must have overcome a lot of technical difficulties." Some of those solutions can be used elsewhere as well!"

Gu Song looked at him strangely: "The problem is, these technical problems...... Do you understand?"

He Ting is in a high position, but he is not from the scientific research system. With such cutting-edge technology, he can't understand it when he tells him, right?

Gu Song reacted after a while, and looked at the young man who came with him: "This big brother Fei ......"

He Ting gave him a thumbs up in admiration: "Fei Jing, the backbone of the Weilong team." ”

The young man nodded vigorously.

Gu Song was shocked: "Brother Fei, your name ......"

"No way, Mom and Dad got up. Fei Jin's expression remained unchanged, as if he had long been used to it.

"You're really prepared...... In this case, Lao He, you can take out the test data and introduce it to Commander He and Brother Fei. ”

When he arrived at the reception room in the main building, He Anzhi took his laptop and tinkered with the projection.

"Very well prepared!" He Ting praised.

"Originally, it was just a test flight, just borrowing two astronauts, but it had to be so complicated. Gu Song muttered, "With such fanfare, you must also be prepared." ”

He Ting said a strange thing: "The prototype of the aerospace aircraft has been developed and is about to take flight, and it is not a big deal in your eyes, so I can't understand it." If you had known that this was a single-level monster in orbit, how could it be so simple? Believe it or not, maybe the ancient elders would come over in two years. ”

He silently looked at this well-known young academician and winner of the highest science and technology award.

This guy really has that kind of look on his face that doesn't care too much.

Effortlessly suppressed curiosity, and waited for He Anzhi's introduction.

A clerk brought tea, and after bringing the door again, He Anzhi was also ready. He nodded at Gu Song, and then said: "The development of aerospace aircraft itself is to solve some shortcomings of carrier rockets. In addition, there is a lesson from the space shuttle ahead, so when it was first designed, Gu Song took out the direction of single-stage orbit. ”

He Ting still understands this background.

The rocket engine is ignited from the ground, and it uses its own oxidizer and fuel to ignite to generate thrust. Therefore, it has to carry a large amount of oxidizing agent, so that the mass of the propellant accounts for a large proportion. In this way, a rocket of several hundred tons may have a payload of only about 10 tons.

No matter how recyclable it is, there are natural limitations.

He Anzhi said: "The development of Yinglong Aerospace Aircraft is divided into three parts. I was in charge of the engine, Fan Yuanbai was in charge of the spacecraft configuration and design, and Guo Yue was in charge of the software system. Of course, the general responsibility is Mr. Gu. ”

"In terms of engines, the rocket-based combined cycle power plant route is adopted, which is a schematic diagram of the structure. ”

Looking at the picture on the projection, he squinted his eyes slightly and looked at it intently.

He Anzhi explained: "In the state of low sonic speed, the intake ramjet engine is used. After the initial speed is sufficient, it is possible to switch to a rocket engine. If you want to break it down, you can see that it has a total of five working states. ”

He opened his mouth as if he wanted to ask a question, and then held back.

He continued: "Of course, the process of designing and completing this engine requires a lot of pre-simulation calculations with specialized quantum computers and artificial intelligence. There are too many technical points in it, such as pneumatic thermal, processing and manufacturing, mechanics, material technology, and turbomachinery...... Fortunately, Mr. Gu was involved in the special projects of precision instruments and machinery, materials technology, artificial intelligence and quantum computing at that time. ”

He Ting remembered what the patriarch said about Gu Song's "peculiarity", and muttered in his heart that this guy must have been prepared step by step a long time ago.

"I won't go through the technical difficulties that have been overcome one by one, but let's talk about the results. He Anzhi looked a little excited, "When this guy is working on Mach 5, the specific impulse can reach more than 6,000 seconds." The intake pre-cooling system is strong and can work up to Mach 12, allowing the engine to work in scramjet and the rocket engine to start at the highest possible speed, increasing the payload ratio. ”

He couldn't help it, and asked: "In other words, in fact, this engine includes the solution of the scramjet engine?"

He Anzhi looked proud: "Sort of." However, we have not studied how to design a single ramjet engine to further enhance its potential. ”

He Ting asked curiously: "Useful?"

He nodded excitedly, but only said, "Please continue to introduce." ”

"The final engine, if allowed to propel at maximum efficiency, could easily go into a synchronous orbit. And if it only reaches low earth orbit, it can greatly improve the comfort and not cause so much pressure on the aircraft. According to the simulation, the passengers in it will feel similar to those on a civilian airline. ”

"Because of the high working efficiency of the engine, the payload of the 425-ton design take-off weight of the Yinglong Aerospace Aircraft can reach 76.5 tons, and the proportion of payload has reached 18%! Of course, I am only responsible for the engine. In fact, the design and software system of the aerospace aircraft has greatly improved its reliability, and the maintenance time and other costs are not much better than those of the space shuttle. In the words of the boss, in fact, the design idea is a civil aerospace aircraft. ”

Gu Song nodded and said, "This is civilian, for peace construction." If you have any needs on your side, you can study and demonstrate them later. However, this thrust level, specific impulse, and the requirements for the size of the aircraft are not suitable. ”

Fei Li replied in his place: "It's already very powerful...... The commander is not to realize the strategic use of aerospace aircraft in one step, and many of the technologies in this will play a great role in our next-generation aircraft design and research!"

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