Liao Zhuojing's words made Liu Yijiu feel heartache for no reason.

The equipment is gone, as long as the people are there, they can be remanufactured, if the people are gone, what is the use of these equipment? The reason why he Liu Yijiu didn't go down was not to show that he was not afraid of death, he knew that under any circumstances, Li Rui would try his best to keep him safe. Li Rui put it on and landed, also for him.

So, he didn't say anything.

But he hopes to be able to jump with Huang Pingyang, if he can't control it.

Huang Pingyang is comparable to a special pilot made of gold. In recent years, among the helicopter pilots of the Republic, there are very few special-grade helicopter pilots, especially those who have served in the comprehensive test flight of the Z-8, and who have also flown the Z-91 for such a long time.

He was the one who served when there was only one prototype at the beginning, and the test pilots of the later planes were all selected from other units, and they were not the top helicopter pilots.

"Lao Huang, don't raise the pitch, keep the helicopter flying smoothly, don't raise the pitch, keep the flight steady! If the output of the engine is increased, the remaining engine will also stop due to overload...... "Liu Yijiu was helpless, and finally just arranged a few security personnel to prepare, once the plane was completely out of control, he had to jump with Liao Zhuojing and Zhan Like in his arms.

Fortunately, when I returned to the middle passage of the cab in front of the engine room, I saw Huang Pingyang, who was sweating profusely, desperately raising the pitch, hoping to increase the output power of the helicopter's remaining engine that did not stop working.

Immediately shocked.

In such a scenario, the power output of the engine continues to be increased. Most likely, the engine will be overloaded, and then stopped.

Once this happens, there is no chance at all.

Huang Pingyang heard this. The nervousness suddenly became relaxed. Instead of caring whether the engine has enough power, he tries to control the helicopter to maintain a smooth flight attitude. In this way, the descent speed of the helicopter is effectively controlled.

"Director Liu, it's under control!" The helicopter is still descending rapidly, but it is not uncontrollable.

"Rest assured, I have confidence in my design and your operation. There is also confidence. Try to keep your flight attitude as smooth as possible and find an open space to land. We were still very dangerous before landing. "Although it is said that the design is even if a single engine is stopped. Without exceeding the load capacity, the helicopter is also able to fly very long distances and even fly back to the airfield, however. This is the plateau. Anything can happen.

At an altitude of 6,000 meters, the air movement is not too strong, but on the top of the mountain on the ground, the wind is very strong.

In the case of an engine, the output power is insufficient, and it is not easy to control the flight attitude, and it is even very likely to be blown over by the strong wind! ended up with a plane crash and death.

The Republic likewise introduced helicopters of the Mi family. French helicopters were also introduced, but in the end none of these helicopters were deployed on the Tibetan Plateau. It is because these helicopters are not very stable in the harsh and complex weather conditions.

Not to mention anything else, even the Mi-24 will not be able to go to the Qinghai-Tibet Plateau.

For a long time, the only helicopter that rescued on the plateau was the civilian version of the Black Hawk exported to China by the US imperialists. Even many border posts sent supplies only to stock up on enough before the snow closed the mountains.

The helicopter did not descend as quickly as it had before, but descended slowly downward as it flew forward in a 30-degree diagonal trajectory. Even so, Liu Yijiu's nervous heart couldn't relax, and Huang Pingyang did the same. From the time one engine stopped to the present, in less than seven minutes, the helicopter has dropped directly from an altitude of more than 6,000 meters to an altitude of less than 2,000 meters!

On average, the helicopter goes down ten meters per second!

Once the remaining engine stops, the consequences are absolutely unimaginable.

The Z-91, without the installation of weapon systems, has an empty weight of 7,200 kilograms, which is 2.4 tons heavier than the Black Hawk of the United States imperialism, which is still the use of a large number of titanium alloys to make the air so light. More than a dozen researchers, two drivers, and more than two hundred kilograms of monitoring equipment add up to nearly ten tons.

A ten-ton object moves in free fall from a height of six thousand meters......

"Keep going, don't try to increase the pitch and increase the engine output, find a place to make a forced landing. Watch out for the hill ahead, and if you can't fly over, take a detour! "Liu Yijiu has now become Huang Pingyang's navigator, and on these mountains, it is impossible to directly force landing.

Four other helicopters also accompanied the flight.

"You don't have to worry that we can't stand it, we're not at the point where we need oxygen, jump! We are not afraid of ......" said that they were not afraid, jumping from such a high altitude, Zhan Like and Liao Zhuojing's legs were trembling.

When the Z-7 flew in the past, they had never been on a helicopter at all.

This time, Liu Yijiu did not ask them to fly randomly, but observed with a telescope below, and they saw deep contempt in the eyes of the young Director Liu.

They hadn't been on these helicopters of their own design before.

"There's no need to argue, now you don't have to jump the plane! Don't you feel that the plane is flying very smoothly now? "High above the Tibetan Plateau, the tension was so high that no one noticed that the descent of the plane had become very slow.

The original devices used to monitor the data during the flight are still running, but no one pays attention to the data.

Saving life or equipment, in their hearts, there is a very clear answer. Therefore, as long as it is said in front, let jump, there is no parachute, they will open the hatch and jump out without hesitation, not to mention the parachute.

"Sure enough! Now the descent speed is 4.5 meters per second, and the level flight speed is 155 kilometers per hour......" Liao Zhuojing heard Li Rui's words, and hurriedly jumped towards the monitor next to him.

Liu Yijiu didn't have time to pay attention to the back, and now for an engine, it is already a little overloaded.

The total power of the two turboshaft-4 engines is 2860KW, and the power of each engine is only 1430, although the power is nearly 300KW higher than the 1160KW of the T-700-GE-701 engine produced by General Electric used by the Black Hawk, but the thrust-to-weight ratio is much smaller than the thrust-to-weight ratio of 0.959 of the 701 engine used by the Black Hawk, only 0.832.

Moreover, the turboshaft-4 engine is a brand-new engine, which is the engine that Director Liu made with his golden finger, and has not undergone a long-term large-scale flight test, whether it is as reliable and durable as the engine of General Electric, and it is not enough to rely on long-term large-scale experiments in the engine research and development process!

Therefore, Liu Yijiu is still worried about the remaining engine stalling.

The height of this place is not high, and once it falls, it is basically completely abandoned.

"Director Liu, thanks to you! Whew......" Huang Pingyang let out a long breath after the plane made a successful forced landing.

Only now did he have the heart to wipe a bead of sweat the size of a bean on his forehead.

In such a situation, it really scared him.

Also, the plane did not fall, and the equipment behind it was not dropped.

"Xiao Liu, when will you fly a helicopter?" When Liao Zhuojing stopped the plane, his legs were weak and he almost collapsed on the chair. After hearing that Liu Yijiu was in good command, he couldn't help but be a little surprised.

Director Liu can always bring them this feeling of surprise.

Liu Yijiu smiled bitterly, "It's not that I can fly a helicopter, but I know how to operate it theoretically." As a chief designer of a helicopter, all kinds of structures and operations have to be memorized. In that case, although the power of a single engine, although somewhat reluctant, and the output power is somewhat insufficient, the resulting lift will not make the helicopter completely out of control, and in the state of level flight, the command descends at a uniform speed at an angle to the ground......"

For the Z-91, a helicopter that Liu Yijiu has spent too much thought on, every place and every system is familiar to him.

He has a brain that is not inferior to that of a supercomputer.

"That's all there really is!" Zhan Like is in charge of the production side, and he is not familiar with these, but he is the deputy chief designer of the Z-7, and he is also unfamiliar with these technical problems.

"Alright, let's rest for a while and get ready to find a problem. In this case, if we can't get it done as soon as possible, we will have to spend the night on this snowy mountain. Liu Yijiu didn't want to talk about it anymore. In such a situation, even the chief designer may not be able to know how to deal with it and how to deal with it.

I've never eaten pork, at least I've seen a pig run.

The experience accumulated over the past hundred years of the entire country's military-industrial system is definitely not given in vain.

"Director Liu, let's fly this plane slowly to the temporary base. The car can't come up on the mountain here......" Huang Pingyang pleaded.

"No, there are tools in several other helicopters," Liu Yijiu shook his head ......and refused.

The problem here should not be very big.

At the beginning, he looked at all the electronic instruments on the console, although the indicators were also flashing, all of them were caused by the lack of engine output.

He already had a guess in his mind about the reason for the engine stop, but he didn't say it.

On this cold plateau, Liu Yijiu and Liao Zhuojing personally inspected the entire helicopter, Liu Yijiu did not check next to each other, but directly opened the engine room on the top of the helicopter, and finally carefully inspected the compressor.

"As expected, it was caused by a faulty compressor!" Liu Yijiu looked at the compressor and said with a wry smile.

Others didn't expect that Liu Yijiu would find out about the problem so quickly...... (To be continued.) )

PS: I'm sorry that the tiger is big, it should have been changed for the big one a long time ago, and it has been delayed until now.