"This kind of car is called domineering." The next day, a group of people came to the missile unit, and finally saw this Scud missile launcher, and when they saw it for the first time, they couldn't help but shout.

The big guy has created a Mercedes-Benz heavy truck and an infantry fighting vehicle, which is already great, but compared with the other party's missile launcher, it is a small thing.

Look, one of people's off-road tires is almost as high as their chest, and the thick off-road pattern looks like a unique feeling.

The most spectacular thing is the front of the car, the cab on both sides, like a grasshopper, sticking out a head, with big eyes on both sides, looks particularly rough.

And in the middle of the two cabs, there is the engine.

At this time, the lid in the middle of the cab has been opened, and the V12 engine is displayed in front of everyone, the red cylinder head, the metallic high-pressure oil pipe, all like a strong man showing his muscles.

This is the epitome of the aesthetics of violence!

The hearts of everyone who watched it were surging.

At this time, at the front of the car, several engineers from the pyramid country were frowning there.

They stood on the bumper at the front of the car, looking at the assembled engine inside, muttering something.

No, still no!

Their missile launch vehicle, is really too devastating, originally thought, is a matter of changing the engine, although there is no same model, but, there are many similar models, the position of the anchor screws are the same, as long as the hoisting up, screwed up, can work normally, who would have thought that this kind of problem would occur.

Shake!

For a military truck, the vibration is not a big deal, it is impossible to pursue the stability of a car, but the vibration is too big, after starting the engine, the vibration is not small, and when it starts, the whole cab is like a boat.

If it goes on like this, even if the driver can stand it, the missile on his back can't stand it. If the missile is reversed, it cannot be launched.

Here they are racking their brains, and they don't know how much thought they have put into it.

"Ladies and gentlemen, our friends from the great eastern powers are here, let them see if there is a way." Shreif continued to lead the group, and now, he shouted to the people above.

At this time, those people turned their heads and looked at these people wearing the same military uniforms, all of whom were surprised faces, and one of the leaders jumped down.

"Hello everyone, my name is Said, ** company's power system engineer." "When we put our tank engines on them, there are always surprises," Saeed said. ”

The pyramid countries, unlike other countries, are also trying their best to develop their own military industry, and in more than 20 years of development, they have also made good progress, they can produce their own rifles, they can make their own artillery, they can also overhaul tanks and so on.

Even fighters, they can produce their own, what is called Helwan HA-300, of course, the appearance looks no different from the Mirage aircraft.

Originally, with the installation of the engine, the model is similar, there should be no big problem, who would have thought that there would be such a crashing situation.

"Allow us to help, hopefully we can find the problem." Qin Zhenhua said: "Now, can we take a look? ”

"Absolutely." Said Said.

So, Qin Zhenhua climbed onto the bumper at the front of the car, and from here, he could see the thick cab, the steering wheel and various operating levers inside, Qin Zhenhua's heart was itchy.

In normal vehicles, the windshield is tilted backwards, which can reduce wind resistance, but Lao Maozi's military vehicle goes the opposite way and is inclined forward, similar to the porthole of a warship, so that it is easier to see the road below.

The three-spoke steering wheel inside doesn't have any aesthetic appeal to speak of, but when you hold it, you can definitely feel the power coming from inside.

Qin Zhenhua thought in his heart, and then began to look at the engine below.

Since the other party is an engineer of the power system, it is said that he should have quite strong ability, and the problem that they are helpless should be a big problem, so he has to take a closer look.

Generally speaking, the vibration of the vehicle is a very complex problem, it may be a problem with the engine, or it may be a problem with the transmission system, and the wear of one of the gears may cause this kind of violent vibration.

If systematically speaking, this is a problem of NVH of the vehicle, which needs to be studied by a special laboratory, but when Qin Zhenhua leaned down and saw the engine below, he already roughly made a judgment in his heart.

Their experience is insufficient, so they will make such a simple and stupid mistake, but this is fine, in this case, they can give themselves a chance.

"What have you all tried?" Qin Zhenhua asked pretendedly.

"We have carefully calibrated the engine and tuned the propeller shaft, and now we are certain that it was caused by the replacement of the engine, but the specific cause has never been found." Said Said.

What can be done, they have all done it, and now, hearing the other party's words, Qin Zhenhua nodded solemnly: "Yes, they have done it, but it still doesn't work, I think, it is estimated that it is caused by resonance." ”

Resonance?

"When the vibration frequency of the engine is close to the natural frequency of the car body, it will cause resonance." Qin Zhenhua said: "Its characteristic is that when it is in a certain throttle speed range, the vibration is the most violent, and you can even feel the entire car body vibrating. ”

"yes, you're right." Said said: "But how is this possible? We're replacing a similar engine. ”

"That's right, it's a similar engine, but it's not exactly the same type of engine, which can only be said to be a coincidence, unless you find the exact same engine from the original, otherwise, even if you change to another engine of the same model, there will still be a similar situation."

What Qin Zhenhua said was consistent with the other party's conclusion during this time, and now, hearing Qin Zhenhua's judgment, the other party frowned: "So, if that's the case, won't we be able to repair these vehicles?" Unless we can find the original engine? ”

"That's not necessarily, you can try a different engine." Qin Zhenhua said.