Qin Feng didn't know how the cockpit lost pressure yet, after all, there could be many situations in it.

The cockpit is a sealed environment, and this sealed environment is the result of the joint action of multiple devices, for example, the floor under your feet, the equipment on the side, which is covered with various devices, the operating lever in your hand, there are hydraulic pipelines and the back are connected, and the front dashboard has various wires and pipelines, which are connected to the outside, and if you don't seal tightly, it will leak.

Of course, a slight air leak in the pressurized cockpit is a common phenomenon and cannot be avoided, but now, this air leak is instantaneous and will soon be the same as the outside world, which is not a common seal leak, it must be a serious problem.

Qin Feng didn't know what was going on, but now Qin Feng only knew that this fault was not a big deal, after all, it was not the main fault of various systems, similar to the engine flame-off, but it was also said that it was not small, if he didn't wear an oxygen mask, he might have been sacrificed now.

Now, Qin Feng's consciousness slowly recovered, and after leveling the plane, he thought about various possibilities, and when he heard the sound of the call on the radio, everyone on the tower of the test flight institute breathed a sigh of relief.

At least I know what happened to the plane, otherwise, I don't know why I don't know why the plane keeps dropping altitude, this is the most terrible, since it is the cockpit loss of pressure, then after going back, I will check it carefully.

"001, change course to 0-1-0, reduce altitude, return to base." The tower continued to give orders, and now, Qin Feng's fighter was still heading incorrectly and was moving away from the base, now that the experiment had been completed and the fault was clear, it was time to return.

"001 Roger." Qin Feng replied on the radio, at this time, there was no movement in his rear cabin, I don't know what Yang Lin's situation is, at this altitude, the air pressure outside is still very low, so Qin Feng must continue to reduce the altitude, to less than a thousand meters, it should be much more comfortable.

What's uncomfortable?

The air pressure outside is low, and the air pressure inside his body is high, so that it is like a bulging balloon, including the lungs, etc., are expanding to the outside world, and even his eyes feel like they are bulging outward.

Except for the loss of pressure in the cockpit, everything else was still fine, so Qin Feng began to slowly reduce the altitude while pushing the fighter to steer and aim in the direction of return.

If there are no other problems, this test flight will be a bit thrilling, but there will be no major problems.

"001 reports, all instruments are normal, and they are returning home." Qin Feng said.

At this moment, he heard the sound of the rear cabin, and after continuing to reduce the altitude, Yang Lin in the rear cabin finally came to his senses, and his eyes were in a trance, and he slowly saw everything around him clearly.

"I just fell unconscious?" Yang Lin asked.

"Yes, our cockpit is out of pressure, but it doesn't matter, it's down to two thousand meters now, and we're heading back." Qin Feng said.

Qin Feng can wake up first, it has a lot to do with his physique, the better his physical fitness, the sooner he wakes up, for pilots and weapon operators, the physical fitness requirements of weapon operators are to lower the standard slightly, after all, he doesn't need to fly a plane, he only needs to operate weapons, generally speaking, as long as they can complete normal training on rollers, etc., it is enough, however, they need to have professional knowledge of weapon operation.

In an emergency, the pilot may temporarily act as a weapon operator, but the weapon operator cannot fly.

In fact, this is still a two-seat fighter-bomber, if it is a multi-seat bomber, such as the H-6, or even those bombers during World War II, the people on it do not need to be selected strictly according to the standards of pilots, otherwise, where will there be so many flight personnel?

Especially those machine gunners, some of them hurriedly trained on the ground for a few hours, and then went to the sky, anyway, every time the battle ended, there would be a lot of losses.

Hearing what Qin Feng said, Yang Lin looked at the meter in front of him again, and knew what had just happened, this time, it was another life and death adventure, if the two of them had been unconscious, the consequences would be quite terrible.

Now, he closed his eyes again, felt the air rushing in from outside, and said, "001, I judge, it may be that our hatch is leaking. ”

The airflow is not leaking in from below, but from the side, so it feels like it is probably the hatch cover, could it be that the locking system of the hatch cover is broken?

After flying into the sky, the pressure outside is small, and the pressure inside the cockpit is pressurized, so the cockpit cover must have a qualified locking device, otherwise, the hatch cover will collapse out, every time you get on the plane, when the cockpit cover is buckled down, the ground staff who follow them closely behind, must carefully observe to see if the locking device of the cockpit cover is normal, and then you will go down and remove the gangway, and now it is said that the locking device is broken, the possibility is also very small, after all, this thing is not a high-tech ah.

Even if it is the cockpit cover of the J-6, you can use it.

"Possibly." Qin Feng said, now, with Yang Lin's feelings, Qin Feng can also feel it, it seems that the cockpit canopy on one side is leaking, and the cold wind is pouring in, and one of his arms is going numb.

I didn't know it just now, but now that Yang Lin said this, he felt this way.

Fortunately, although it is leaking, at least the cockpit canopy is still here! Qin Feng has always been very easy to satisfy, just like now, despite the terrible accident, he can still operate the plane, and he is full of confidence again.

Fly back!

The altitude continued to fall, from two thousand meters to fifteen hundred meters, and Qin Feng was sighing when suddenly, he heard a bang.

With this sound, he felt a huge attraction above his head, as if he wanted to suck him out! Fortunately, the seat belt on the seat was tightly tied to him, so that he would not be sucked up, Qin Feng was stunned at this moment, what happened to him?

At this time, Yang Lin in the rear cabin could see it clearly, and he shouted loudly: "001, the cockpit canopy above your head flew off!" ”

Whatever you are afraid of, Yang Lin in the rear cabin saw what had just happened thoroughly, to be exact, he clearly saw the cockpit canopy above Qin Feng's head, flew out from above, and then, flew over his head, fortunately, there was no sound of impact from behind, if it hit the vertical tail, it would be a big trouble!