The third update.

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This cave is obviously much tighter than other caves in terms of area and defense, so it is a bit conspicuous at this moment. Zhang Yang guessed whether the me262 was stored here. However, as soon as he tried to enter, he was politely stopped by two guards with live ammunition.

"Major, you need a special pass to enter."

“I just visited.”

Zhang Yang pointed to the dark cave and said that he had no other ideas.

"Sorry, if you need to visit, you can ask Colonel Film to issue a pass for you. We are responsible for it."

Both guards were 1.8 meters tall, with straight military uniforms and rifles, and obviously they were not easy to talk to. Zhang Yang and the others were wearing Hydra masks, and the two guards were also hesitant for a moment.

Just as the two sides were in a stalemate, a hearty smile came from a distance.

"Major, I'm sorry for keeping you waiting for a long time."

Zhang Yang turned around and the owner of the smile was nothing but Colonel Film, the leader of the base. The Nazi officer smiled happily and walked over quickly and shook hands with Zhang Yang. A guard was also following behind him. Zhang Yang remembered that this guy seemed to have been paying attention to him. Now it seemed that Colonel Film had asked him to stare at him.

"Col. Filming."

Both sides greeted each other, and then Colonel Filmen's face darkened, glared at the two previous guards, and scolded: "You two idiots! Don't you know that Major Haosit is my guest! Apologize to the Major!"

The two German soldiers immediately changed their words and apologized to Zhang Yang: "Major. We apologize to you for what happened just now."

The two sides sang together, not to mention Zhang Yang, even Bucky could see that the other party was trying to show that they were trying to show their own strength. Zhang Yang looked at Colonel Filming meaningfully, and Colonel Filming directly ignored Zhang Yang's gaze, as if he was unaware of it.

"Now I can go in?"

"Of course, the entire base is open for you." Colonel Filming bowed gracefully.

"snort!"

Zhang Yang snorted coldly and walked in, while Bucky glanced at the guard who was following him and thought that fortunately he didn't speak just now, otherwise it would be troublesome if the other party overheard something.

When Zhang Yang walked in, Colonel Film only glanced at the two guards and gave the other party a satisfactory look. Obviously, this matter was planned in advance. Perhaps before Zhang Yang came here, Colonel Film had guessed the other party's plan to check the base. Now this foreshadowing is just right.

Colonel Filmen was never a fool. Although he defected to Hydra, he still had his own little calculations and provided ho229 design drawings as his bargaining chips. His current actions are similar to demonstrations so that the Baron would not be too contemptuous of himself. If he was not worried about being noticed by Berlin, Colonel Filmen would be willing to make his military rank a major general.

According to some information he had, many people in the German army secretly added Hydra, including some senior generals. Hydra's penetration ability surprised anyone, and Colonel Film was mixed with this group of senior generals. The rank of colonel became a little pitiful. However, he had a good grasp of the level of the demonstration and did not do too much.

Zhang Yang took Bucky to the cave, and in addition to the speculators, he also added a cunning evaluation of Colonel Film.

The cave is very spacious, with a height of about six meters and a width of twenty meters. As it gradually deepens, the cave does not become dark. There is a row of electric lights on both sides of the passage, illuminating the passage.

Feeling the airflow coming towards him, Zhang Yang could be sure that the space inside should not be too small. Colonel Film follows him and walked about twenty steps. A large iron door appeared on the other side. Half opened and half closed. Zhang Yang felt the airflow blowing from inside, and the whistling wind could be heard.

“This is our wind tunnel testing site.”

Colonel Filming explained next to him: "You may not have heard of it before. A wind tunnel is an artificial simulated airflow device used to test the impact of airflow on aircraft. There are very few air force bases with wind tunnels in France, and we are one of them."

With his explanation, Zhang Yang stepped into the door and saw a very spacious interior space. Many people in white coats were walking back and forth. After seeing Zhang Yang coming in, he didn't even have the interest to take a look. He continued to focus on the information in his hands, as if the information was made of gold.

Zhang Yang walked forward a few steps, his eyes passed over these white coats, passed through the surrounding desks, and landed behind a large glass window. Two extra-large fans could be seen vaguely rotating slowly, and in front of the fan, an airplane was fixed to the rails and was shaking slightly.

This aircraft is different from the most common piston aircraft. It has no propellers on it, only a jet engine under the wings on both sides. The wings are also different from the piston wings. They are slightly tilted backwards and take the shape of a sweep wing, although the sweep angle is not large.

"This, this is..."

Bucky, who was standing next to Zhang Yang, opened his eyes wide. He had never seen such a model of aircraft, including the two extra-large fans in front of the aircraft, and he couldn't figure out what it was for. But these news made him quickly realize that the plane in front of him was the new fighter jet that the German army was about to launch!

Captain Filming stood next to Bucky, looking at his research results with a little pride.

"This aircraft is our newly developed me262. After the last battle, we discovered some minor problems and are undergoing subsequent modifications. These modifications require wind tunnel testing, confirming the final data bit by bit until it is finalized."

“It’s spectacular.”

Zhang Yang looked at this huge space with complicated eyes. The Germans didn't know what method to use, so they took out such a wide space in the mountain. It was not only confidential but also difficult to attack, but even built a wind tunnel inside to conduct various tests of the plane!

During World War II, Germany's scientific research level was amazing. A group of scientists at the forefront of science and technology became one of Germany's most precious assets. Unfortunately, Germany was defeated not long after. These scientists were quickly divided up by the United States and European countries, including the Soviet Union, which achieved the technological reserves of various countries and laid the foundation for the rapid development of science and technology in the future.

Colonel Filming was obviously very satisfied with Zhang Yang's evaluation. During the current war with shortage of resources, Germany still had the energy to build such a small wind tunnel. It has to be said that this made him very proud.

"This one is an improved model, and the prototype is in another hangar. If the data meet the standards after various tests, then this one will be finalized."

The sound of the wind tunnel test can still be heard after passing through the glass windows and other sound silencing measures. Moreover, the temperature of such an indoor base is obviously much warmer than that outside. I don’t know what heating method it is. In short, the surprise this wind tunnel brought Zhang Yang was no less than the previous news.

At this time, a researcher finally noticed Zhang Yang and his party. Especially after seeing Colonel Film, his eyes lit up and walked forward quickly. He first glanced at Zhang Yang's clothes strangely, and then reported:

"Mr. Colonel, the No. 2 improvement plan is still under test. Although it has not been completed, judging from the current data, the modification effect this time is quite good, and some data is much more stable than the previous prototype."

Speaking of this, the researcher wearing glasses pushed his glasses and looked at me262 with gentle eyes: "One thing we must admit that after tilting the wing backwards, the stability of the aircraft has been greatly improved. Our previous concerns were unnecessary. This swept-shaped wing can make the aircraft faster. I am very confident that in the future, the aircraft will definitely break through the speed of sound!"

The previous words satisfied Colonel Philin, and the next words made him frown.

"Future? No, Mr. Recent, based on my speculation, I believe this jet will definitely be the first to break through the speed of sound!"

Colonel Filming's words obviously made the researcher wearing glasses a little embarrassed, but it was difficult to refute. Only Zhang Yang, who had been listening to the two of them, knew that the researcher's speculation was correct.

The two key technologies of supersonic flight are: the first is the generation of jet engines, and the second is the emergence of swept wings.

Although the me262 already meets these two conditions, due to various designs, including very critical engine technology, various restrictions have allowed the aircraft to reach a maximum speed of Mach 0.86. This is the conclusion drawn by the designer of me262 Willie Messer Schmitt after multiple tests.

In fact, Messerschmitt only regards this model as a transition model. In Messerschmitt's multiple tests, the me262 dives to a speed of Mach 0.86, will drive the aircraft to press downward, which will bring a series of problems. When the aircraft reaches a certain speed, the huge overload will directly disintegrate the fuselage. After the end of World War II, the Royal Aeronautics Institute also confirmed this theory.

Understand the simplicity of these things and knowing that Colonel Film's words are just a wonderful soap bubble.

The researcher then reported the follow-up research progress to Colonel Film, with little change in the overall data, mainly due to minor modifications to the basic layout of the wings and fuselage. Compared with a single aircraft such as bf109, the signs of the swept wing of the me262's wings moving closer together are becoming more and more obvious. (To be continued, please search for astronomy, the novel is better and faster!
Chapter completed!