In the blink of an eye, 1932 came to an end.

On this morning, Lin Youde set off from Sanssouci Palace to go to the land equipment test site to watch the demonstration of the prototype of the "Field Transport Tractor", but as soon as he went out, he saw snowflakes slowly falling from the gray sky.

The fox who was originally holding Lin Youde's arm immediately threw off Lin Youde's arm and ran out, and began to pretend to be an innocent girl who saw snow for the first time, and spread her arms in a hula circle in the snow.

If Lin Youde didn't know the nature of this guy, probably- probably wouldn't be good. Lin Youde shook his head, he was not a person who would have been captured by a basic romantic scene like a beautiful girl and Xue Piao.

Qianxun jumped and sold for a while, and found that Lin Youde didn't sell it, so he ran back and pushed Lin Youde's shoulder: "You are too incomprehensible." ”

"You usually have to sell less sass, and I'll probably enjoy this beautiful scenery a little more." As he spoke, Lin Youdra opened the door and made a gesture of invitation to the fox.

After the fox boarded the car, Lin Youde also got into the carriage, and before he could sit down with his buttocks, the fox stuck up, put his arm around Lin Youde and asked, "Will my task be to test the defense ability of those tractors later?" ”

"You don't have a mission."

"Eh, weren't those weapons made to defeat the Divine Queen, I think it makes sense to test how many of those things a Divine Princesses have to destroy before she gets tired and falls......

"It doesn't make sense at all, you shut up and sit down!"

The fox pursed his lips and let go of his arm a little, but still let his body continue to stick to Lin Youde.

"You're not learning how to bark?" Lin Youde asked.

"Don't scream, I'm tired of playing." While Chihiro answered, the car started.

**

When he saw the thing parked in the testing ground, the fox laughed exaggeratedly and rolled over to the ground.

"Do you really want to use this kind of thing to defeat the Divine Hime? Haha......ha

Lin Youde wanted to stop the fox's impolite behavior at first and take care of the developers' face, but in the end he couldn't help but laugh out loud.

At the time when he made the request to the engineers, Lin Youde hadn't realized that his golden finger had such a wide range of influence in addition to music and cooking, so he didn't directly draw a picture to convey his thoughts to the engineers, but only told them that this thing should have inclined armor, excellent cross-country ability, and enough to suppress enemy firepower, and be able to run long distances.

As a result, the engineers spelled out such a strange guy for Lin Youde.

Lin Youde found it difficult to describe the strange-shaped iron bump in front of him in words, he imagined a little what a group of such things would look like, and had to admit that the fox might be right, and the people who saw this scene might be laughed to death directly.

The chief engineer in charge of the design is one of Dr. Porsche's proud disciples, and at this time, he was smiled by the "****" of His Excellency the consultant, and suddenly felt that his face was dull and his expression was very ugly.

He was embarrassed when the fox suddenly stood up, coughed, and quickly changed his serious face.

"However, there are some things that can't just be seen by appearance, Mr. Chief Designer, please show off the performance of this thing."

The steps given by the fox softened the chief designer's expression a lot, he cleared his throat and glanced at Lin Youde, who nodded to him and signaled that he could start.

Thirty minutes later, the presentation ended.

Lin Youde also probably knows where the problem is. When a problem needs to be solved, these German engineers often add parts of the machine to solve the problem.

In order to meet Lin Youde's requirements for a long-distance run, they stuffed a huge fuel tank into the car, and at the same time, in order to ensure that the engine did not lie down during the run, they prepared an exaggerated radiator for the car. Then, in order to meet Lin Youde's requirements for protection capabilities, a lot of armor was added to protect the core components that were a little too big.

Then, unsurprisingly, they found that the car was overweight, so in order to ensure the speed of the off-road sprint, they increased the power of the engine, which led to higher fuel consumption......

After the cycle reached the extreme, such a strange thing was made, although this thing met the basic requirements put forward by Lin Youde, but the cost was too high.

After figuring this out, Lin Youde asked his entourage to get a blackboard.

After the blackboard was moved, Lin Youde picked up the chalk and looked at the German engineers who came around.

"I must admit that it was my fault that such a thing was born, and that I did not make it clear. Let's start with my first request. ”

As he spoke, Lin Youde drew two diagonal parallel lines on the blackboard, then pointed to the engineers and said, "Look, this is inclined armor." ”

Lin Youde originally thought that as long as he told the Germans that the armor should be tilted, they would understand why they did this, but in fact they didn't understand, and they were worthy of insisting that vertical armor would not be wrong if they were not taught a lesson.

"In combat, our Tan-I mean, our field tractors have to deal with direct fire, which means that most of the shells will come from the horizontal direction, of course, I know, the shells will sag under the influence of gravity, but the sagging shells are either from a long distance, or the muzzle velocity is already slow, so these shells don't have to worry. The main threat comes from high muzzle velocity munitions, which come in a relatively horizontal trajectory, which have enormous kinetic energy. And the advantage of inclined armor is here. ”

Lin Youde drew a horizontal line through his two parallel diagonal lines.

"This is a simple trigonometric problem, assuming that the original armor is fifty millimeters, and after tilting the alpha degree, the thickness of the armor that the incoming shell needs to penetrate is equal to fifty millimeters divided by the COS alpha ......"

"Your Excellency, divide by SIN Alpha." There are young engineers who say.

"Okay, thanks for correcting." Lin Youde's face was slightly hot, and his expression was a little embarrassed.

The fox, who was sitting on a chair not far away, laughed so hard that he fell backwards with the chair.

Lin Youde scratched the back of his head and decided to forcibly skip this embarrassing part, so he continued: "In short, the inclined armor is not my personal preference, but the need to start from actual combat, so that in fact, as long as the armor is much thinner, I can achieve the protective performance I need." ”

"However," the chief designer seemed to have doubts, "if the field tractor is hit by a more serious falling shell flying from a distance, it will be penetrated, although the distance will make the shell lose some energy, but ......"

"Mr. Chief Designer, it is very difficult to hit a laterally moving Tan-field tractor at a distance of more than two thousand meters. Of course, if the tractor is heading exactly in the direction of the artillery, there is no need to consider the lateral displacement, and the hit rate will increase. Therefore, we need to distinguish between the protection of the tractor in all directions, the front should have the best protection, followed by the flanks, and the rear defense can be a little lower. It is the responsibility of the battlefield commanders, not your engineers, to ensure the safety behind the troops. ”

Lin Youde's words caused a discussion.

He waited for a moment before a cough redrew the engineers' attention to him, and then he continued, "Okay, let's move on to the second point, mobility." I think you've made a mistake, all I need is for this guy to be able to run long enough distances without problems, I don't have too high requirements for the speed of this thing's maneuvering, of course it's good to be faster, if you can't get fast, as long as you make sure that you can go cross-country faster than a human forced march, it's acceptable. ”

After Lin Youde finished speaking, the engineers looked at each other and were just about to start discussing, when the fox, who had been playing soy sauce next to him, suddenly said: "I don't quite understand, the purpose of you want to build this thing is to enable the troops to rush through the enemy's defense line under artillery fire, and then quickly advance to the depth, right?" But you don't seem to be building this thing to that goal. ”

With that, the fox jumped up, walked out of the canopy viewing platform, walked over to the iron lump bathed in the light snow, and turned to look at everyone.

"You see, this turret is completely redundant, and installing a turret might greatly expand the usefulness of the guns equipped with this thing, but it doesn't make any sense for the purpose you drew for this thing, my dear. Depending on what you're trying to do, you should make it look like a body, and then have space to carry infantry in the extra space. In battle, it was responsible for transporting the infantry to the position, and then using the machine gun on the hull to support the infantry to seize the position. Of course, in order to destroy the fire point and increase the chance of winning the assault, it is also possible to reload the cannon. ”

Then the fox grabbed his chest with both hands and trembled: "The cannon is mounted on the front like this, and when the enemy fire point is found in the front, it stops and aims!" ”

The fox then squeezed the twin peaks with his hand, and at the same time his mouth made a booming onomatopoeia.

The gesture caused the placket of her dress to slide down slightly, but she didn't seem to care.

"Look, isn't that great?"

Lin Youde fell into a state of powerlessness, this fox can even sell meat at this time, this is already the skill level above the grandmaster.

"When the time comes, there will be a derivative vehicle that removes the turret to carry the infantry." Lin Youde paused, "But the basic model must have a turret, and a turret can better adapt to the complex battlefield situation." Of course, after the development of the basic model is completed, we can use the basic hull to develop an assault gun equipped with a larger caliber gun, which is no problem, but the key basic model must be developed first. ”

Then Lin Youde turned to the engineers again: "Everyone, I am not satisfied with the model you designed this time. You immediately start designing and building a new prototype. Remember, I don't need you to be high performance in every aspect, you don't need to stuff parts into the car, I need something that's simple, reliable, and easy to produce. As long as the performance is up to my requirements. We first have to solve the problem, and then gradually accumulate experience in production and use, step by step improvement, this is called 'small steps and fast running', although the steps are small, but as long as we move fast enough, we can also achieve the effect of big strides. Do you understand? ”

The engineers nodded.

Lin Youde was not at ease, and emphasized again: "Solve the problem first, and then run in small steps, remember." ”

"Yes, Your Excellency." The chief designer replied in place of his subordinates.