"Anti-tail parachute?" Suddenly, someone spoke: "What's that?" ”

"In tail spin, because the speed of the aircraft is relatively slow, the movement of the aircraft is mainly rotating, and the ability of the aircraft to change the state is small, but it takes considerable force for the aircraft to change the tail spin. So, if we wanted to change the tailspin, we had to go down a couple of laps. Qin Feng briefly introduced: "After the aircraft is equipped with an anti-tail spin parachute, when the pilot cannot change from the tail spin normally, the anti-tail spin parachute can be opened through the launch button in the cockpit. At this time, the anti-tail spin parachute mounted on the tail of the aircraft will be brought out by the small rocket, and after the huge umbrella is opened, it will produce great traction, instantly change the air attitude of the aircraft, and directly pull the aircraft out of the tail spin. After the pilot controls the parachute is dropped, the aircraft enters a normal dive and exits the tailspin. ”

This principle is like this, but for specific trial production, it is necessary for the test flight institute to set up a special research team to find the aerodynamic law to study this problem.

How to enter the tail spin, how to change the tail spin, this is a very rigorous test flight science, although this is the test flight institute, but the research on the tail spin is not sufficient, so, Qin Feng's report here, has become an important basis for everyone, Qin Feng reported for a long time in the morning, and in the afternoon, everyone discussed with each other.

At the same time, Tu Lao and others also came by train.

Qin Feng flew over in a J-7, while Tu Lao and others could only take the train, and the 132 factory also attached great importance to this final test flight.

"The test flight institute, over the years, I don't know if the equipment has been updated." When Tu Lao walked in, he couldn't help but say.

As an aircraft engineer, Tu Lao doesn't know how many times he has been here, at the beginning, the self-remembering instrument in the test flight institute was a pen on black paper to automatically draw a curve, and finally the scientific research personnel analyzed and interpreted.

"We've updated our equipment a long time ago, and our old seventh room didn't eat the old book." At this moment, a person said to Tu Lao.

"Lao Ren!" Tu Lao looked at the person opposite and couldn't help but say, "I haven't seen you for several years, and you finally have no hair on your forehead." ”

Ren Lao is the person in charge of the old seventh room, that is, the TT&C Institute of the test flight institute, and this time he wants to test the tail spin of the J-7, of course, with the assistance of the TT&C Institute.

The magnetic recorder is already the latest equipment they have developed, Tu Lao followed the crowd, walked into the command and control room, saw the simple equipment on it, and remembered what he had seen in France.

Tu Lao couldn't help but say: "Our equipment is already backward, Lao Ren, I suggest that our old seventh room report to the superiors and introduce their most advanced 'Daming' measurement and control system from France." ”

The French equipment is said to be very advanced, and the test flight institute has to test all kinds of aircraft, and the data is quite important.

Ren Lao nodded solemnly: "Yes, even if we have limited funds, this flight test equipment must be updated, if we fly tail spin this time, there is a new system, it would be great." ”

Several people did not speak.

Tail spin is the most dangerous subject, even if Qin Feng has changed it last time, there is no guarantee that it can be changed every time, if it can't be changed, then the plane is gone, the plane is in this kind of test flight, those data, if it can be synchronously displayed in the command and control room, it would be great.

After speaking, Ren Lao forgot Qin Feng again, this young man is facing the greatest risk.

"Yes, it would be better if we could bring in French equipment." Qin Feng said: "But now, even if we don't, we have to complete the test flight mission, Tu Lao, don't worry, after discussing with the experts here, my confidence is stronger." ”

When he came here, Qin Feng gained a lot, and when he continued to discuss, many experts listed formulas on the spot and calculated and derived, not to mention anything else, the experts here have very strong theoretical ability.

"When will the test flight start?" Elder Tu asked.

"Tomorrow, let's start with the simplest." Head Li said.

The day was very tense, and after discussing it in the afternoon, Qin Feng went to the tarmac to see how the ground maintenance fighters were doing here.

As soon as I reached the tarmac, I heard the roar of fighter planes in the distance.

This voice was so familiar that Qin Feng couldn't help but raise his head and look at the returning fighter.

This fighter is the same as the J-7, it is also nose intake, but its fuselage is longer, the tail is taller, and under the sunset, the entire fuselage of the fighter is shrouded in a layer of golden light, like a beautiful man in the air.

As long as he glanced at it, Qin Feng knew that it was the J-8 fighter, the fist product of the 601 Institute.

Although he had heard of this project many times, it was really the first time Qin Feng had seen it, he stared intently at this fighter, it used two engines, and the acceleration would definitely be faster, right?

I saw that its wheels were lowered, its posture was normal, and it flew in front of Qin Feng's eyes, and the wheels had already touched the runway, which was almost a perfect landing.

The wheels continued to glide on the runway, and after the landing gear in front of it also touched the runway, a white parachute suddenly flashed from the tail, and the pilot had released the parachute.

Suddenly, Qin Feng frowned, something is wrong, this deceleration parachute is still emitting blue smoke?

Then, in the next second, just when the deceleration parachute was not fully opened, I saw a flame suddenly emerge from the white umbrella flower, no, the deceleration parachute was on fire!

Test flight is to fight against all kinds of design flaws, Qin Feng became a test pilot, and he has long been mentally prepared, but Qin Feng didn't expect that the J-8 would have such an accident, and the deceleration parachute caught fire.

After landing, the plane slowly taxied forward and eventually came to a stop, but this requires a long runway, so it must be assisted with the necessary measures.

Foreign advanced fighter jets, has begun to directly use the brake to slow down, in China, the use of the most common deceleration parachute, after the release, the air, the fighter can be pulled, this is also a common means in this era, otherwise, the fighter at high speed, ordinary brake pads can not withstand ah.

It's just that this parachute is on fire, and it's really the first time I've seen it.

Landing is different from take-off, when landing, the engine is almost idling, and the flame in the tail is very small, how can it burn the parachute?

Qin Feng suddenly remembered the dangerous accident he encountered, although the oil pipe burst, but the high temperature of the rear fuselage is also a culprit, this is almost the common problem of the J-7, it is brought out from the mother's womb, and the J-8 is improved on the basis of the J-7, is there also this problem?