In early April 1932, Lin Youde personally put Lin Guokai on a ship bound for Western Australia in Hamburg.

On the train back from Hamburg, Lin Youde received an invitation from Dr. Junkers, saying that the prototype of the transport aircraft, codenamed EF20, had completed the most advanced ground tests and was ready to take flight.

In Lin Youde's original world, in 1932, the JU52 was officially finalized and began mass production, and the prototype flight test time should be the end of 1930 if Lin Youde is not mistaken. And in this space-time, the prototype of the JU52 has just been built.

Fortunately, in the previous design stage, Lin Youde artificially intervened, allowing Dr. Junkers to change the single-engine design to a three-engine design, which was an improvement in the original world world when the small-batch trial production was carried out until the seventh one.

It turns out that the JU52 of Spacetime and Space uses an American engine produced under license. The same is true of this plane, and the engine that Lin Youde bought back is more powerful, probably because the Americans in this time and space regard the air force as the key to overwhelming the combat effectiveness of Shen Ji and Zhan Ji.

The aviation industry of the United States in this time and space is stronger than the previous time and space, which makes Lin Youde very headache, as a traverser, of course he has the ambition of unifying the world and becoming the captain of the ball, and the air superiority of the United States will become the most ferocious obstacle on the road to realizing this ambition.

Could it be that it is really necessary to rely on Germany's superiority in rocket technology to fight the United States?

However, it was too early to think about that, so Lin Youde decided to think about it in the future and focus on the things in front of him first.

Due to the stronger power obtained, the design of the EF20 prototype is also different from the one in Lin Youde's memory, and the performance has been improved a little in all aspects. In addition, Lin Youde's prescient instructions "The freighter will not sell well and it is better to build a passenger plane", "wait for the passenger plane to be sold before developing the freighter version" - in short, His Excellency Consultant has extended his hand to all aspects of the development of this transport aircraft.

Therefore, it is only natural that Dr. Junkers will invite Lin Youde to participate in the test flight.

Lin Youde immediately approved it, and the test flight was arranged on the day he returned to Potsdam - Lin Youde had to go to see the trade unions in various places along the way, give a speech or something, and it would take three or four days to walk.

After returning to Potsdam, Lin Youde got off the train and went straight to the "Advanced Atmosphere Fixed-Wing Aircraft Factory" factory built in the north of Sanssouci Palace. For the convenience of aircraft research and development, Lin Youde planned this new factory area next to the airport, which is specially used for the test flight of the new model, and when the passenger aircraft matures in the future, it will also be used as the airport for Potsdam's VIPs.

When Lin Youde arrived at the airport, the R&D team of the entire flight factory had already gathered on the airport apron.

In addition to the lack of war queens and god queens in this time and space, the great powers still regard the air force as an auxiliary service for reconnaissance and transportation, and the development and manufacture of new magic armor consumes a lot of resources, so the research investment in aircraft is generally insufficient. Lin Youde's fixed-wing aircraft factory in the advanced atmosphere gathered the best aircraft engineers in Germany, and the original four giants of time and space, Junkers, Heinkel, Messerschmidt and Dornier, were all gathered here.

As soon as Lin Youde got out of the car, he was warmly welcomed by this group of airplane maniacs.

Lin Youde simply waved his hand, and then set his eyes on the plane behind the large group of engineers.

JU52 in the last time and space, Lin Youde felt that it was ugly, and he had the impression that even the German stick rarely washed the floor of this ugly duck, but now the EF20 prototype parked in front of Lin Youde has a stunning appearance - although the three-release game still makes people feel ugly.

Lin Youde listened to Dr. Junkers, who was the chief designer, explain the design of the aircraft, and walked towards the fighter. In fact, he didn't understand what Dr. Junkers was talking about, and all his attention was on the plane in front of him.

Suddenly, Lin Youde's gaze fell on the pilot who was standing tall next to the boarding ramp of the plane.

"I know you." Lin Youde said after careful confirmation, "At the end of the civil war, I saw you at the award ceremony. ”

"Yes, Your Excellency." The pilot replied in a loud voice, "You gave me the Iron Cross at that time." ”

"Then how did you come here to drive a prototype of a civil plane?"

"I'm retired," said the pilot's face with pride, "the wings of freedom should not be bound by the forces of the old!" ”

Lin Youde Ha Da smiled.

After laughing, he patted the pilot on the shoulder: "That's right, the souls of those people are bound by gravity." They will never be able to touch the sky. ”

"Yes, that's what I thought!" The pilot replied aloud, "And, that's what all my colleagues think." ”

"Oh?" Lin Youde raised his eyebrows, "You are not the only one who came to retire?" ”

"Our entire team has retired under the pretext of an excuse. But there weren't enough planes to fly here, so now they're all working on the ground crew at the airport to repair the old planes. ”

"Hahaha, there's still this thing, okay, I know it, I'll get you some work."

After speaking, Lin Youde turned around and said to Dr. Junkers, "Okay, let's start the test flight." ”

Fifteen minutes later, the EF20 took to the skies. Lin Youde decided on the spot to name this type of aircraft the Junkers 1 and approved the start of trial production.

In the evening, Lin Youde held a celebration banquet at Sanssouci Palace, inviting all the engineers and technicians involved in the design and manufacture of the Junkers 1 to attend, and by the way, he also brought retired Luftwaffe pilots from the ground crew of the airport.

The next day, before everyone could recover from the joy of the successful test flight of the new model, Lin Youde summoned them all to the building of the aircraft factory.

"Ladies and gentlemen," Lin Youde stood on a makeshift platform, holding chalk in one hand and a Junkers 1 wooden model in the other, "I have been busy stabilizing the situation in and around Germany, and the entire scientific research base is still under construction, and the equipment and personnel are not perfect, so I have always let you study your favorite projects." Now, we are nearing the end of the construction of our site, and the wind tunnel laboratory for this plant is about to be completed – I have heard that the Junkers 1 has been improved with the help of some of the equipment that has already been completed in the wind tunnel. Therefore, I am now going to discuss with you the future direction of aircraft in the atmosphere. ”

Lin Youde's words caused a lot of discussion, although the engineers respected the top advisor, but in the face of Lin Youde's blatant intervention in their own areas of expertise, their self-esteem was somewhat unturned.

Lin Youde patiently waited for the discussion to disappear, and then continued: "I know that many of you don't like war very much. ”

When he said this, Lin Youde deliberately glanced at Dr. Junkers, who was a fierce opponent of the Nazis in the original time and space, and was a well-known anti-war activist - but in this time and space, he was very happy to help Lin Youde complete the cloud burst bomb mass killing.

"But," Lin Youde bit the accent, "in the foreseeable future, we will definitely experience a series of wars. The world is at the juncture of the change of generations, and the light of science and technology will replace the grace of God, but those who rely on the grace of God to ride on people's heads will not sit idly by, and in the next twenty years, the power of justice and progress will be counterattacked by them frantically!

"We don't like war, but we have to prepare for it. In this future war, we may have the help of some of the Progressive Gods and Warrior Girls, but we must focus on 'winning the war with pure scientific and technological strength', and only then can we have any hope of victory in this cruel war in the future! ”

Lin Youde stopped, took a breath, and took advantage of this gap to observe the expressions of the engineers one by one, and found that no one showed any objection, and the Frenchman Dassault was still nodding again and again.

"And in this big war, which is expected to come, air superiority will be one of our most important trump cards. Therefore, I ask you to develop two kinds of aircraft: first, a fighter plane that can absolutely defeat the enemy's fixed-wing aircraft and gain air supremacy; Second, it is an attack aircraft capable of carrying out ground attacks with ferocious firepower. ”

Lin Youde's words once again caused a discussion, this time he coughed and suppressed the discussion, and then turned around and walked to the blackboard behind him.

"For the first aircraft, since our superiority in aviation technology is not enough to form an overwhelming technical inferiority, we must ensure superiority in air combat from other angles. The key to this is to grasp the future direction of the development of air combat tactics. ”

Saying that, Lin Youde drew on the blackboard, just like singing, and his painting skills were also strengthened after the crossing, and the schematic diagram drawn in three or two strokes was very three-dimensional, and the perspective was also very correct.

"In the last war, air combat was generally a knight-like grappling, so fighters also paid more attention to grappling performance. But I would say that such air battles will be a thing of the past. In the future, air combat will become energy air combat, emphasizing the importance of gaining altitude superiority, then diving and plundering, and then disengaging at high speed. After Lin Youde finished drawing a schematic diagram of the raid attack and disengagement, he turned his head to look at the pilots.

All the pilots looked thoughtful.

Lin Youde looked at this situation, and then went down his train of thought: "So this new fighter should have excellent climbing performance, whether it is the steady climbing function of 20 to 30 degrees of elevation, or the function of using speed to climb instantaneously after diving and pulling, it should be very good." At the same time, it should have excellent dive performance and structural strength that allows it to pull up at very high speeds without breaking the wing. ”

"Your Excellency," said the pilot in charge of yesterday's test flight of the Junkers 1, raising his right hand, "I have a question. ”

Lin Youde immediately nodded and motioned for him to speak directly.

"We can understand what you said about diving and plundering, but the situation on the battlefield is changing rapidly, and there must be many cases where you have to enter the grappling, what should you do at that time? I don't know much about aircraft design, but according to the way I have flown so many models, a fighter with a particularly good dive generally feels a little worse when hovering. ”

At this time, Messerschmitt also nodded and said: "Vertical maneuvering and horizontal maneuvering are two different aspects of aircraft design, and how to take into account them has always been a difficult problem in front of us. ”

"On this point," Lin Youde looked at the pilots and then at the engineers, "on this point, we can also make up for it with tactics." Pilots, in the future, you will use two fighters as the basic unit, and it is strictly forbidden for you to be alone under any circumstances, even if you attack, you must attack with both planes. When you have to fight, you use this two-machine tactical move. ”

As he spoke, Lin Youde drew a schematic diagram of the scissor maneuver invented by Major Thatch of the U.S. Navy Air Force on the blackboard.

"Look, just like this, the two fighters cover each other's tails and shoot at the enemy planes that drive out their teammates at six o'clock with a large deflection angle. For this maneuver, the ability to hover is not really important, what matters is the ability of the fighter to roll. So you just need to develop a model that has excellent vertical maneuverability and a high roll rate, and you don't need to be particularly good at hovering. ”

This time, it was the pilot's turn to erupt.

Lin Youde ignored the pilots' comments and continued: "In short, you must remember not to engage in entanglement with the enemy as much as possible, and the future air combat will be a cycle of searching, diving and attacking, disengagement, climbing, and searching again. ”

Lin Youde cleared his throat.

"And the second type of fighter, I think it should be a dive bomber. The target of such fighters is not the enemy's battle or god army, but the enemy's pillboxes, artillery positions, and other fortifications that may hinder our ground attack. The experience of the German Civil War has taught us that as long as the supply lines are quickly interspersed with the enemy's rear, the threat of the Knights of War, who lack the ability to sustain combat, will be greatly reduced. And to achieve such a rapid and large-depth breakthrough, it is indispensable to be able to keep up with the heavy firepower of the troops. This heavy firepower is provided by this second type of bomber. ”

"The dive performance sounds a bit repetitive with the requirements of the first one." This time it was Dr. Heinkel who spoke, "so it's better for us to ......"

"No, this second type of fighter has to be designed separately." Lin Youde interrupted Henkel, "It doesn't need to climb very well, and at the same time it has strict requirements for stability when diving, and it needs to have enough bomb load. I hope it can carry one to two tons of bombs, dive at a wide angle to a height of hundreds of meters, and then be able to pull up steadily. ”

When they heard Lin Youde say that the bomb load of one to two tons was loaded, all the engineers frowned.

So Lin Youde had to add: "Of course, the bomb load is not a hard indicator, but it cannot be less than half a ton, which is the bottom line." ”

After finishing speaking, Lin Youde looked around the factory and asked loudly: "Does anyone else have any questions about these two research directions?" ”

The engineers looked at each other, but no one said a word.

So Lin Youde turned to the pilots: "As for you, gentlemen. While the new aircraft is being developed, I have another task for you. ”