The military base used as the research site of the Nantianmen Project is an air force base, and naturally it also has a runway.

But this runway has not been used for a long time. Since the disaster came, the air force base was sealed, and there have been no aircraft taking off and landing on this runway for several years.

When Chen Xin and the others arrived on land ships, they just landed on the snow-covered apron.

It’s not that they don’t remove the snow, but that it’s more than ten meters thick. It’s really a huge project to remove it, and the snow is very frozen very thick. Instead of cleaning the snow, it’s better to open a roller to compact the snow and use it directly on the ground.

The only problem may be that the road surface will slip after the snow is compacted, but even if the snow is cleaned up, the ground will be easily icy and slippery in such a cold day.

Therefore, in order to solve the runway problem of aerospace plane test flights, the base staff spent three days to level the snow-covered runway, so that it could at least meet the standards of field airports and could be used for aerospace plane test flights.

"Is there any problem with the runway? Is it impossible to have a little fire in the airplane engine, and the runway melts directly?" Chen Xin's concern was not a reasonless guess. After all, the technical verification aircraft of the aerospace plane tested still uses a traditional jet engine, not the female N induction field engine and the KD-64BV transformed cycle engine set on the Xuannv Aerospace Unmanned Fighter in the Nantianmen Plan.

The so-called female N induction field engine is a radiation propulsion engine that uses the products of giant change reactors as medium for propulsion. This propulsion method is still too early for humans, and technology has not yet developed to this point.

Therefore, this aerospace plane uses traditional engine technology that has been mature. Relying on the advanced technology provided by various countries, this aircraft can meet the design requirements.

However, this also brings a problem, that is, when the airplane engine is started, the temperature of the tail flame can reach a high temperature of thousands of degrees, and the snow will evaporate instantly if it melts.

The researcher on the side was not very worried about this and replied to Chen Xin: "Please rest assured about this. We have done detailed calculations and there will be no problem."

As he said that, he introduced the situation of the aerospace plane to Chen Xin in detail, explaining that even if the snow on the runway is evaporated by the tail flames of the aerospace plane, it will not affect the test flight of the aerospace plane.

After hearing the explanation, Chen Xin nodded. He also knew that since these researchers were able to formulate such a test flight plan, it was obvious that all aspects had done detailed calculations and decided to do so only after confirming that there was no problem.

But he was still a little worried, so he asked more.

Not only did he ask, Chen Xin also sent the researcher's explanation to Xiyao and asked her to help with derivation and calculation.

Although he had asked Xiyao to calculate the data before the test flight test flight application plan was started before the project team submitted the test flight application plan to Chen Xin, he still asked Xiyao to calculate it again. After confirming that there was really no problem, he agreed to let the aerospace plane take off.

As Chen Xin's order was conveyed, the aerospace plane on the runway began various inspections before the flight and started the engine.

Chen Xin held up his telescope and looked at the plane on the runway. At this time, the surface of it had been sprayed with a layer of black protective paint, which looked very inconspicuous.

But unlike the fully enclosed nose of traditional aircraft glass cockpits, it still illustrates the essence of this aerospace aircraft drone.

"I remember Xuannv's design adopts two operating modes: forward sweep wing and manned/unmanned?" Watching the test flight enter the reservation position on the runway, Chen Xin suddenly asked the researcher beside him.

According to the original design in the Nantianmen Plan, the Xuannv Aerospace UAV uses neurosensory control, and the pilot directly controls the aircraft through his helmet, so there is no need for the glass cockpit of the traditional aircraft.

In unmanned mode, a neuron computer of the bionic human brain will be installed in the cockpit to control the plane's flight and perform tasks.

Of course there is no problem with such a design. Apart from the fact that today's technology cannot do these things, there are indeed no disadvantages.

Even the wing design of the aircraft was specially conducted for feasibility analysis at that time. Although it cannot be said that it is certainly reasonable or has superior performance, at least this structure is really able to fly.

So after the entire Nantianmen plan was taken out, the original science fiction level settings and requirements were only made to make some simple modifications or lower standards to make them conform to reality and current technological level. There were no more adjustments in addition.

However, on the aerospace plane, what Chen Xin saw was that this test flight technical verification aircraft abandoned most of the original designs of the Xuannv Aerospace Unmanned Fighter.

Rather than saying that this technology verification aircraft is the realization of the Xuannv Aerospace Unmanned Fighter, it is better to say that it is just a plane redesigned according to the idea of ​​the Xuannv Aerospace Unmanned Fighter.

The researcher on the side obviously understood this problem and explained to Chen Xin's inquiry: "In addition to our technology, the original design of the Xuannv fighter also has certain problems. For example, the front swept wing design and the front wing of the diamond wing design will have certain conflicts, which will greatly affect the elevation performance of the aircraft. Therefore, we modified the aerodynamic layout and redesigned the aircraft.

The technical verification machine you see at present is a pneumatic shape designed by Lucia for the Su-47 Golden Eagle. However, the entire Su-47 project has not been put into production, so this design has not been actually produced, and it has only been tested for wind tunnels.

This time, the South Tianmen project has this need, so Lucia took out this design, and combined with other finished technologies provided by various countries, the current technology verification machine is available."

Chen Xin was not surprised to hear the researcher say this. When he visited the plane before, he did not pay much attention to the shape of the plane. After all, he had a lot of things at that time, so the specific responsibility of each project was handed over to the project leader to handle it with full authority.

He is only responsible for dealing with overall situation issues, so specific details like this can only be seen when the plane flies.

Especially Chen Xin didn't know much about the plane. If it weren't for the concept design drawing of the Xuannv Aerospace Unmanned Fighter in the information in front of him, he might not have discovered this difference.

Just as Chen Xin and the researcher were talking about this, the technical verification aircraft on the runway also completed all the preparations before takeoff, and the engine sprayed out a long tail flame, pushing it into the blue sky.
Chapter completed!