The engine test bench test is a test that any engine that has just been developed must go through.

Heaven's stuff often needs to be successfully tested on the ground and the theoretical design is verified before the next step can be carried out.

No matter how good the theoretical design is, even if there are no defects, the tail flame spin rocket engine designed by Liu Yue must be successfully tested on the test bench before it can enter the production of sample bombs.

The base headquarters has taken the project very seriously, and now it is finally possible to verify the design.

Whether or not to launch the 273-mm MLRS project, today's tests are the key.

"Liu Yue, it's a good thing to be sure, but there is no component test and component test, and the risk is still very high...... "Seeing the staff filling fuel, Jiang Zhihe reminded Liu Yue, "It won't take too ......much time to start the test from scratch now."

His voice was small.

Saying these words is not to discourage Liu Yue's enthusiasm, but to remind Liu Yue that this is too risky.

"Leader, I also know that the risk is high, but we don't have time, this engine has gone through countless theoretical calculations in the design process, and even I have used our supercomputer modeling and simulation ......" Liu Yue naturally knows.

If you want to complete the test, you have to start with every part of the engine.

Now he doesn't have that much time.

Otherwise, starting from scratch, the test of this engine can last for several years, and a series of tests are carried out from the material characteristics, toughness, heat resistance, service life and so on of each part, and it is not easy to complete the design.

"We now have the biggest opportunity, as long as there is no problem with the whole machine test, other parts test can be supplemented later...... If you can make a sample cannon in a short time, once the situation on the southwest border changes, you can get the actual combat test......" Liu Yue saw that Du Feng and Li Xingnong had come over and explained in a low voice.

A self-defense counterattack on the southwestern border!

"Those designs of yours are all here for this, right?" Li Xingnong looked at Liu Yue, "Maybe it can't be fought? The focus of our country's work is economic construction......

Liu Yue glanced at Li Xingnong and did not speak.

Self-defense and counterattack wars, that must be fought.

If you don't fight, the clown on the other side will think that it is really the third in the world, and it will swell to the extent that it will continue to invade China's territory.

Originally, the other party was getting more and more excessive, and China couldn't bear it.

Otherwise, who wants to fight?

In these years, the country is so poor that the people have not even solved the basic problem of food and clothing, who has the heart to go to war?

It's not the United States and the Soviet Union.

"In fact, this is very similar to the 123 factory, otherwise we would not be able to directly test the whole machine. Component testIn the process of production of the whole machine, the components that have been locked in have been ......," Liu Yue explained in order to reassure everyone.

I did do some experiments.

After all, rocket engines are different from other engines, and the working environment is very harsh.

If the service life of the engine cannot be reached, and finally the rocket is launched, and before it flies to the target position, the engine is scrapped because the parts cannot withstand the high temperature working environment.

Kong Xiangrong, director of the engine test station, has always expressed concern about such a direct access to the whole machine.

Seeing the leaders of the headquarters coming over, he didn't give a good face.

In the past, the experimental stations were all experimenting with large rocket engines, and such a small thing was not tested at all.

did not let the experimental station prepare the test bench in advance, and in the end, he could only use the rocket simulation shell they provided according to Liu Yue's request.

"Leader, this is not in order. Kong Xiangrong reminded everyone.

"Special case. Jiang Zhihe and others naturally knew that they did not follow the rules, and the process was too much less.

Now that it's all come to this point, what else can we do?

"Stationmaster Kong, get ready......" technician Tian Li came to report.

"Comrade Liu Yue, come on. Kong Xiangrong didn't say anything else now, and directly asked Liu Yue to come.

Liu Yue also knew in his heart where Kong Xiangrong's dissatisfaction with himself came from.

I had only communicated with this side before, and it wasn't until the experiment was about to be done that he came to Kong Xiangrong, and at first Kong Xiangrong didn't agree with his method at all, and in the end Liu Yue said that he borrowed the monitoring equipment of the experimental station and did it by the 2186 Technology Department.

In addition, various materials from previous theoretical calculations were provided to the experimental station.

Otherwise, Liu Yue's engine would not have been able to go to the test bench at all.

"Let's test the reliability of the engine first. Liu Yue didn't talk nonsense.

Three engines, all placed on the test bench.

The conditions of the experimental station are very simple, built halfway up the mountainside, half outside, and the internal observation area and control room are built inside.

Thick reinforced concrete blast walls have been built on three sides of the test bench, which is used to test large missiles and launch vehicles.

The first one is fixed on the test bench to test the reliability and service life of the engine.

Around a circle of oblique nozzles used to generate spins, there are devices used to test thrust, temperature, etc.

The fuel, on the other hand, is placed in an area not far from the test bench, separated by an explosion-proof wall.

From the outside, the small engine on the internal test bench can only be seen through explosion-proof glass.

"10-second countdown, 10,9...... 2, 1, ignition!" Liu Yue took the walkie-talkie, stood outside the explosion-proof glass, looked at the engine on the test bench, and gave an order.

"Smack~" The staff in the control room pressed the ignition button.

"Boom~"

The engine, which had been horizontally fixed on the test bench, spewed an orange-red flame to one side.

As the flames generated, a thick cloud of smoke diffused outward.

"Increase the supply of fuel! Gradually reach the maximum thrust ......" Liu Yue saw that the ignition was successful, and he did not get the slightest excitement.

A small rocket engine, what's so exciting?

If you really want to be excited, you should also make a multiple-ton rocket engine.

As the supply of fuel propellant increased, the flame ejected by the engine on the test bench became lighter and lighter, and soon turned incandescent white.

All kinds of data are transmitted by the monitoring equipment on the test bench to the measuring room not far away.

Time passes slowly.

"Liu Yue, it's been three minutes......"

Seeing this scene, Kong Xiangrong was a little surprised.

In this first test, the ignition was successful, and Liu Yue actually let the engine work for five minutes.

Just looking at the flames that erupted from the tail, the thrust was not small.

How far does this have to fly?

"Directly test the life limit!" Liu Yueming knew that this was a violation, but he still did it.

Kong Xiangrong originally wanted to object, but seeing that the leaders next to him were silent, he didn't say anything anymore.

"Hum~"

It wasn't until 17 minutes later that the first engine finally stalled.

The engine has turned off and the tail nozzle has turned red and there are signs of melting......

"The maximum theoretical range is 120 kilometers, and the maximum specific impulse state lasts for 14 '29", according to the theoretical design, the maximum speed of the rocket reaches three times the speed of sound, and it only takes more than two minutes to reach 120 kilometers away.

For the first engine that had just completed the experiment, Du Feng was a little painful.

Performance or something, it's not that important.

Cost is the key!

"Yes, the service life is five or six minutes, it's enough......" Zhao Guoyun was also in pain, "Our is not a fighter engine, it doesn't need such a high service life, anyway, it can't be recycled, and the service life is wasted too much......"

Liu Yue was on the side, and his face jumped several times one after another.

He knows the difference between a rocket engine and a turbofan engine used in a fighter plane, which is a one-time thing, and has been deliberately reduced in its service life when it was designed.

"Leader, I haven't used titanium alloy parts in this engine......"

"No need, no need, that's too wasteful!" Jiang Zhihe also hurriedly shook his head, "Can the materials in this be replaced? The cost is too high, our troops can't afford it!"

"If it is replaced, the specific impulse of the engine will be reduced a lot, and the range and power will be reduced......"