Chapter 1047

Yunshi stopped quietly on the airport apron, as if waiting for something. Qin Guan went up, walked along the channel to the front, and then sat on the flight seat.

The driving of an airliner is different from that of a fighter.

Chen Rui is a fighter. Now he sits in the position of the passenger plane and sits next to Qin Guan. He said: "if this kind of big plane wants to test fly and spin, it must be careful."

Chen Rui is not afraid of death, but he knows he must not act recklessly.

The horse in the back always stood and said to the people, "yes, of course we know we can't act recklessly. If you want to test the tail spin of an airliner, you'd better have an anti tail spin umbrella."

Anti Spin parachute, also known as spin out parachute, was carefully analyzed after the tragedy of NiuGuo airliner.

After investigation, they found that the aircraft entered a phenomenon called "deep stall", which was brought about by the high T-tail layout. When the angle of attack of the aircraft is large to a certain extent, the horizontal tail enters the shielding area of the wing and loses its function. The original way to change the stall spin is to make the aircraft bow and accelerate, and make the horizontal tail of the aircraft bow and fail, so that this phenomenon has no solution.

So, in this case, what should we do? For mature aircraft, its stall boundary will be explored by test pilots. When the aircraft approaches these boundaries, the flight control system will remind the pilot to pay attention, or directly take over the control to avoid stall.

Therefore, normal flying aircraft don't have to worry about entering the tail spin, but the test pilots come to explore the boundary conditions of the new aircraft.

Therefore, this anti tail spinning umbrella was invented.

In tail spin, due to the relatively slow speed of the aircraft, the motion of the aircraft is mainly rotation, and the ability of the aircraft to change the state is small. However, the aircraft needs considerable force to change its tail spin.

After the aircraft is equipped with "Anti Spin parachute", when the pilot cannot change out of the spin normally, the aircraft can open the "Anti Spin parachute" through the launch button in the cockpit.

At this time, the "Anti Spin parachute" installed at the tail of the aircraft will be taken out by a small rocket. After the "Anti Spin parachute" is opened, it will produce great traction, instantly change the air attitude of the aircraft and directly "pull out" the aircraft from the spin.

This is the principle of the anti tail spinning parachute. It is somewhat similar to the deceleration parachute of an aircraft, but its aerodynamic efficiency is higher and stronger, and the installation position is also exquisite.

If there is no such device, it will be difficult for yun10 to test the tail spin.

Qin Guan heard what old Ma said and asked, "has our anti tail spinning umbrella been studied?"

Ma Lao shook his head: "tail spin is a difficult subject in the aviation industry. We have little research in this field, and there is no passenger plane. Therefore, it is a blank now."

Without an anti spin parachute, the spin test flight is doomed to be full of risks, which is why they are hesitant and have not had a test flight.

"Let's deal with this." Qin Guan had an idea. He went to the weapons cemetery to look for the anti tail spinning umbrella of this large aircraft.

Yunshi is a copy of the Boeing 707, so go to the flight test data of the Boeing 707 and find its tail spin flight test subject. Naturally, there is such a thing.

Although the Boeing 707 is a civil airliner, it has many modifications of military aircraft. It should be in the weapons data cemetery. If not, there are similar new transport aircraft and bombers. In short, you can find them.

Qin Guan made up his mind. In short, no matter how many difficulties there are, we should continue to promote this project.

Moreover, once Yunshi is successfully converted into an air tanker, can it be sold to the Sabbath? Or exchange with the plane of the Sabbath?

The idea flashed by. Let's talk about the future. I'll do it now.

The data can't be taken out immediately. Let Chen Rui familiarize himself with the operation of Yunshi these days. When he's familiar with it, he'll get the data and install an anti tail spinning umbrella. Then the flight test will be much easier.

"Our big plane is still blank. If only there were flight simulators for big planes," Chen Rui said suddenly.

Hearing Chen Rui's words, Qin Guan was enlightened. Yes, he simply exchanged another flight simulator. In this way, the subject of stall tail spin can also be tested on the flight simulator now!

This greatly reduces the risk. Although there is no yun10 data in the flight simulator of the passenger plane, there will definitely be Boeing 707.

Qin Guan nodded: "let our technicians find a way to build the flight simulator of this large passenger plane!"

After inspecting the passenger plane, the test flight subjects of the j-8-2 fighter and the J-11 fighter have also been completed. The two planes have flown in one after another, and even one landing seems to be a competition.

Qin Guan looked funny, but the research and development of military aircraft had to be like this. If it could compete, it would be the best.

After dinner, in the afternoon, general Zhang, commander of the air force, arrived with a crowd.

The male cat fighters have made the air force even more powerful. This jian-11 fighter developed on the basis of the male cat fighters is even more valued by the air force. After all, the Han country has a vast territory, and it is far from enough to rely on the more than 70 male cat fighters. It can even be said that these male cat fighters are just a seed, which makes the country move rapidly towards the direction of the third generation aircraft. However, if you want to blossom and bear fruit, you have to rely on your own struggle.

This is the meaning of J-11.

At the same time, due to the contacts of 6601 Institute, their j-8-2 fighter has naturally been sought after by countless people.

The senior management of the air force will come here every once in a while to see the R & D Progress of these fighters. Now, the test flight is the last step towards success, and it has attracted people's attention.

"General Qin, let's meet again," said General Zhang, holding Qin Guan's hand warmly. Qin Guan's contribution to the air force is obvious to all.

"General Zhang, I'm so glad to see you." Qin Guan said, "I'm also proud of the progress of our air force equipment. We need to close the gap with the West on the third generation aircraft, and we can catch up and surpass on the fourth generation aircraft."

Now, the Western third-generation aircraft are only just equipped with troops. For example, eagle's F-15 is also overcoming the technical defects of the advanced F100 engine and really moving towards maturity. It can be said that its own side has caught up.

By the fourth generation, we will catch up with and surpass.

Fourth generation? Hearing Qin Guan's words, everyone was stunned.