The so-called Levesman reversal is a helicopter maneuver, which is a large elevation angle to climb to a certain height and then the nose changes from up to down, and then dives back at the opposite angle, this action is internationally known for its thrilling thrills.

This is a difficult tactical maneuver, the Levisman maneuver uses a helicopter to pull up and jump at high speed, get rid of enemy ground fire, and when it is about to reach its apex, rotate 180° around the rotor axis, turn back and immediately switch to a dive attack.

This tactic is mainly to quickly carry out the transition from detachment to another attack under the enemy's ground firepower, reduce the enemy's attack time, form a huge "Mount Tai pressing the top" situation, and form a huge psychological pressure on the enemy. It is also a key tactic to increase combat effectiveness.

This kind of action is not something that ordinary helicopter pilots can play, no wonder everyone will applaud when they see such a wonderful action.

As one of the test flight commanders and the person in charge of the test flight base, Liu Zhengfeng's face changed slightly, and he said loudly: "What is this Feng Zhiguo doing, playing the piano indiscriminately!"

An officer next to him saw the political commissar getting angry, and couldn't help but think that Feng Zhiguo, this guy always likes to get carried away, and deliberately showed his hand in front of the chief, and now he got into trouble.

On the helicopter, Feng Zhiguo was also happy in his heart after completing the Levisman reversal beautifully, and he admired the fuel cell and motor rotor system mounted on this helicopter so much that he threw himself to the ground, and the Levisman reversal just now was very smooth and easy, which also made him and Zhang Zhiqiang behind him too addicted.

In addition to being excited, Feng Zhiguo also realized that he had a momentary itch just now, and a Levisman reversal came, and it was really possible to get into trouble.

However, he does not regret it, and he can only blame the performance of the motor rotor system is so good, and it is really difficult for him to control it.

Although the weight of this Wuzhi 10 fuel cell set plus the size of the three motors is close to two tons, and its net weight has reached more than six tons, which is one ton heavier than the Apache helicopter, the maximum take-off weight is close to 13 tons, and there will be no helicopter load drop with the increase of lift-off altitude, which provides extremely powerful power for Wuzhi 10.

What's more, the only noise emitted by this Wuzhi Ten comes from the sound of the paddles breaking the air, the noise is almost the same as the sound of a car, and those sitting in the cockpit can communicate normally without wearing headphones, which greatly improves the concealment of Wuzhi Shi and the ability to combat missions.

After the beautiful Levesman reversed, the test flight of the helicopter was completed, and Feng Zhiguo drove the helicopter to land slowly in the designated area.

After the rotor on the top of the helicopter gradually slowed down and finally stopped, Feng Zhiguo and another test pilot got off the plane one after another, trotted all the way over, and finally stopped in front of Zhang Haiping and others.

Feng Zhiguo saluted a military salute, and then reported loudly: "Hello leaders, the test flight has been successfully completed, everything is normal!"

Liu Zhengfeng glared at Feng Zhiguo fiercely, the successful completion of the test flight made him very happy and satisfied, but Feng Zhiguo came to such a Levisman reversal when the test flight was about to be completed, he didn't know whether he should be happy or angry.

It seems that the chief is very satisfied with this test flight, and he has to hold back the grumbling in his stomach.

"Good, very good!"

Zhang Haiping said with a smile: "I also saw the difficult maneuvers made by the two of you just now, which shows that your piloting level is very high, and it also proves that the maneuverability of this helicopter is very good." ”

"Chief Report, it is the excellent performance of this helicopter that gives us the confidence to complete these difficult maneuvers. ”

Feng Zhiguo puffed out his chest and said loudly.

Zhang Haiping said with a smile: "Captain Feng, tell me about the test flight just now, the more detailed the better." ”

"Yes, Chief!"

Feng Zhiguo saw that the chief did not want to pursue his unauthorized very difficult maneuver, and then excitedly explained the entire test flight situation, and even kept praising how excellent this engine is, how strong the performance is, and the technical and tactical plan that can be developed after the Wuzhi Ten Columns are equipped with troops.

Zhang Haiping also nodded frequently.

After the briefing on the test flight, Zhang Haiping said to Liu Zhengfeng with a smile: "To continue the test flight, we must test the maximum performance of this Wuzhi 10, provide a large amount of flight data for the research and development unit, and also provide flight preparation for the combat unit's training department." ”

"Yes, Chief. Next, we will carry out the mission of test flight in the plateau environment. Liu Zhengfeng said.

At this time, Du Changhai, as the chief designer of Wuzhishi, shook Yang Jie's hand excitedly and said enthusiastically: "Comrade Yang Jie, thank you very much for your company for providing so much advanced equipment, which is why there is such an advanced Wuzhishi." ”

"Mr. Du, these are everyone's credits, without Mr. Du's rich experience in aerodynamic design and the cooperation of other domestic units, it is impossible to have such an excellent weapon and equipment. I also hope that in the future, we will work together to design and manufacture more types of helicopters and provide more advanced weapons and equipment for our country's national defense. ”

Yang Jie does have such confidence, now the second generation of fuel cell technology of Huaxing Group has matured, in addition to the power density of the fuel cell has been greatly improved, now the power density has been able to achieve 3.8 kilowatts per liter, the volume and weight of the fuel cell have also been reduced to a certain extent.

At the same time, the electrochemistry laboratory is developing a new electrode catalyst with lower iridium cobalt alloy content, and in order to prolong the life of the electrode and avoid carbon monoxide poisoning in the electrode, the carbon monoxide filtration catalyst at the original hydrogen inlet and air inlet has also made a certain technological breakthrough, and at the same time, it is also developing a lower-cost proton exchange membrane, and the structure and drainage system of the fuel cell have also been optimized.

At the same time, the electrochemistry laboratory is also constantly developing hydrogen oil technology, and now 100 liters of hydrogen oil hydrogen storage has been able to reach 12 kilograms, according to this level, a large car with 70 liters of hydrogen oil can run 1000 kilometers without a problem.

Moreover, the Machine Tool Research Institute has made rapid progress in the technology of permanent magnet synchronous motors by virtue of its strong technical strength in the electric spindle over the years, and has made the permanent magnet motor with the highest power-to-mass ratio at this stage, which has now reached 5 kilowatts per kilogram, and the two parallel 1300 kilowatt motors equipped in Wuzhi 10 are very small in size.

It is also the fact that Huaxing Group can have such a strong technical strength to support it, so that Wuzhishi has such a strong driving force.

Du Changhai said happily: "Yes, with the technical support of your Huaxing Group Company, I believe that we will give birth to more advanced helicopters!"

Zhang Haiping heard the conversation between the two and said with a smile: "It's best if you have such confidence, but now the military needs a lot of advanced weapons and equipment. ”

Helicopter gunships are often claimed to be the backbone of the army, and the Chinese army needs to stand up its own solid and strong backbone.

And now the progress of Wuzhi Ten is so smooth, which really makes Zhang Haiping full of strong confidence.

In the next few days, the test flight base also carried out many test flights, completed a series of test flight subjects, and the armed helicopters showed very excellent performance, which made Yang Jie very satisfied.

After staying in the test flight base for so many days, Yang Jie also communicated with the designers of the test flight team and Wuzhi Shi, especially in technology.

Yang Jie's many of Yang Jie's technical insights and advanced concepts are of great interest to Du Changhai, and Yang Jie's technical attainments are extremely impressive to everyone.

After Yang Jie left the test flight base, he also visited Changhe Aviation Group Company.

In the huge assembly workshop, there are several Wuzhi 10 prototypes in the final assembly, and the scene is spectacular.

A test flight prototype of a helicopter requires at least three or more prototypes for various tests, and with the excellent performance of Wuzhi 10 in the test flight process, the military is also in urgent need of this excellent helicopter, and the helicopter manufacturer has turned on full horsepower and produced it at full capacity.

Yang Jie also personally sat in the two cockpits of Wu Zhishi and felt it, but it greatly satisfied his wishes, he, like most men, has a strong mood for these advanced weapons and equipment, not to mention that the equipment on this helicopter is still provided by his own company.