Under the strong impetus of the launch, the plane slowly flew into the sky, and Khonolev felt that flying this plane was simply a pleasure, and the instruments and buttons that filled the cockpit like the L39 trainer aircraft had almost disappeared here.

The most conspicuous in the cockpit of the L8 trainer aircraft are two extreme negative ray displays, which can adjust the information displayed on the display as you like through the buttons around the display, so as to truly retract and release it freely.

After successful takeoff, check the flight status, confirm the flight situation again, and if there is no problem, the anti-tailspin test flight will be carried out, which is the power of the test pilot.

Checking the fuel, the flight controls, everything was fine, and looking at the weather outside the cockpit, everything was so perfect that it was definitely a good opportunity to conduct flight tests.

"The command center, here is the test aircraft Khonolev, everything is in good condition, ready to start the anti-tailspin test, please pay attention to the ground and cooperate, collect flight data and ground images."

With Khonolev's request for the ground to cooperate with the observation, the anti-tailspin test flight was about to start, and everyone on the ground held their breath and took the initiative to fly an aircraft that was still under development into the tailspin state, which was indeed quite exciting.

"After the ground units are ready, they can start the anti-tail spin test flight, and they can start the anti-tail spin test flight!"

The news from the ground fed back to Kholiaorov, and Khonolev finally began to get to the point, he wanted to try what the limit of this trainer aircraft that gave him a very good early flight experience was.

Putting on an oxygen mask and breathing pure oxygen is a little uncomfortable, but it is a must. What will happen in the tail spin test flight, no one can guarantee.

Move your body. Feel all good: "Test flight begins!" ”

The violent factor in the blood of the Slavs instantly exploded, and they pulled the lever up violently. The flaps of the aircraft are then deflected, and under the action of aerodynamic forces, the head-up torque increases sharply.

This means that the aircraft has entered a high elevation flight state, and under normal circumstances, there will be a flight manual that tells the pilot the maximum flight elevation angle of the aircraft during training.

The more advanced aircraft synthesize the aircraft attitude, airspeed, and altitude sensor data, and then process it through the on-board calculator to obtain the maximum allowable flight elevation angle in the current flight state.

If the flight elevation angle is exceeded, the entire cockpit will sound an alarm or shake the joystick to alert the pilot, and even some aircraft will directly change the aircraft's angle of attack back to a safe state through the on-board fly-by-wire flight control system.

Or by the action of the angle of attack limiter. At all, the aircraft will not be allowed to fly beyond the maximum angle of attack, which is the consistent practice of American aircraft. This is also the reason why American planes have always claimed that they can do Cobra maneuvers, but people have never seen American planes do Cobra maneuvers in public.

All because of the evil US imperialism, as early as when the aircraft left the factory, restrictions were made in the flight control system, and the movements that may enter the danger were restricted by the computer, which is the benefit of fly-by-wire flight control.

The current L8 is a test aircraft, and there is no such thing as fly-by-wire flight control, and I don't even know what the maximum safe flight elevation angle of the aircraft is, which requires Khonolev to carry out the test flight project.

As the angle of attack of the aircraft continues to increase. The speed began to decrease continuously, and Khonolev looked at the data displayed on the monitor, and his heart became more and more surprised, and now this speed has clearly exceeded the stall limit of the L39 trainer. And the gap between the two aircraft is widening.

Seeing that the plane did not stall, Khonolev pulled the control stick to the end again, and the plane reacted a few seconds later. The mature and sophisticated Honolio knew that this was a sign that the plane was about to stall.

Originally, at this time, it should have subconsciously increased the thrust of the engine and lowered the angle of attack. But now Khonolev can't do this, all he needs is to fly the plane into the stall zone. This is the job that test pilots are going to challenge.

The plane stopped climbing, the nose of the plane began to descend uncontrollably, and Khonolev could feel like he had been thrown into the sky, and when the inertia was gone, he began to do free fall uncontrollably.

This is simply a kind of beautiful enjoyment, the test pilot has been challenging the limit all year round, hovering on the edge of life and death, but this feeling of free fall has fascinated Khonolev again and again, feeling the taste of this long-lost free fall.

Khonolev even forgot to change it, anyway, the altitude is safe, it would be good to feel this feeling first, of course, from the beginning of the stall, the plane is moving in the next more dangerous direction.

Usually after the aircraft stalls, it will be accompanied by the spiral fall of the aircraft, which is called tailspin, and the stall situation is collectively called stall tailspin.

The current L8 trainer has taken Khonolev into a stall tailspin, which is where Khonolev should pay attention to this time, and it is also the item to be tested this time.

As the plane fell, it began to rotate along the longitudinal axis, which made everything more difficult to control, and the speed of the plane's fall did not increase due to acceleration, and the speed of the spiral began to increase.

It was time to deal with it, watching the monitor show that the plane was constantly descending, Khonolev decisively pressed the anti-tailspin device to turn on the button, first the umbrella bag opened, and then the parachute rocket started sound.

As the parachute rocket began to work, it took the anti-tail spiral parachute installed in the umbrella compartment between the tail engine and the vertical tail and lowered it to the opposite of the descent of the aircraft, that is, to fly into the sky.

The anti-tail parachute was brought out, and the long anti-tail parachute was far away from the plane, and then the parachute line was straightened by the falling plane, and then the parachute was suddenly stretched open under the action of the air.

A white umbrella flower appeared in the sky, this is the most important equipment in the anti-tailspin experiment: the anti-tailspin umbrella, his role is very large, as long as there is this thing, there is no need to worry about tailspin.

The plane that was still falling just now, because of the effect of the anti-tail spinning parachute, was like being suddenly picked up by a pair of invisible big hands, although it still fell again, but the speed of the fall was already a world of difference from before the parachute was opened.

After the falling speed is reduced, the tail spin of the aircraft will naturally stop, and at this time it can be proudly said that the aircraft has completed the anti-tail spin to ensure a certain safety.

The aircraft has achieved tail spin with the help of external forces, and at this moment the aircraft has been freed from danger, and it is too simple to change the aircraft back to a powered flight state later.

Re-pushing the engine thrust to the fast train, the aircraft was originally in the state of nose downward, with the change of the tail spin, throw away the anti-tail spin parachute, the aircraft with the support of power, began to accelerate continuously, at this time it was already in a controllable dive state.

Quickly recall the critical velocity of the plane when it stalled just now, and calculate it by 1.3 times, and the resulting speed is the critical velocity that is now changed during the dive.

Seeing that the speed was in place, Khonolev did not hesitate to slowly pull up the control stick, and the plane reacted again and slowly leveled it out, which meant that the plane was changed from the stall tailspin state.

The ground tracking and control unit has been monitoring the situation of the plane, and when the plane changes out of the dive, it immediately announces the good news to the crowd.

"It's changed, the plane has been changed, everything is safe!" (To be continued.) )