Lao Du seems to be prepared, once Qin Feng comes to see the information, he can go to the second half of the night every time, well, Gu Tingting is also many times, she really has a husband and wife fate, this hobby is the same.

Therefore, Lao Du didn't plan to go back, in the duty room of the data room, his bed was made, and he was already asleep on it, and it was the second half of the night, what else was he tossing, just sleep here for one night.

Qin Feng put down the book and rubbed his eyes, knowing that he had overused his eyes again today.

As a pilot, you must have a pair of bright eyes, have a strict physical examination twice a year, and if you fail to pass, you will even be forced to leave the army.

Therefore, even if they are looking at the information, they can't take too long, after reading this today, their eyes began to spin in circles, and in the future, they must not be like this again.

However, Qin Feng knew that after he watched it today, he still had a lot to gain, and he knew for the first time that there were still flying machines like stealth planes in the world!

This will bring about a great change in the situation of air combat, and in the future, how will fighters discover this stealth aircraft and how will they intercept it?

This is definitely a serious challenge, when we have begun to develop the third generation aircraft, is this kind of aircraft already outdated? Is it so difficult for our side to catch up with the development of the world's military aircraft?

Qin Feng was a little disappointed when he thought of this, and then, when he saw the phone on the table, he finally couldn't help it.

Although it was already very late, and although long-distance calls were very expensive, Qin Feng knew that if he didn't make this call, he wouldn't be able to sleep.

So, he dialed the phone anyway.

In the past, the call was hand-cranked, the hand-cranked just shook the operator, the operator according to the requirements, connected different lines, to achieve a call with different people, with the development of the times, this technology has been significantly backward, in the early eighties, the domestic began to introduce the process control switch, to achieve the automatic transfer of the telephone, now, the domestic program-controlled switch has also come out, breaking the foreign monopoly, and to make long-distance calls, there is no need to transfer, as long as it is on the keyboard by the number, it can be.

When the phone rang, Qin Feng was still a little apprehensive, it was so late, he should get off work, right? Or, fight again tomorrow?

Just when Qin Feng was listening to the beep from the switch on the phone, and was nervous, a voice came from inside.

"Hey, I'm Song."

"Old Song, hello, I really didn't expect that you are still here, I am Qin Feng." Qin Feng was a little excited.

Song Lao's voice became relaxed: "It's you, why, you suddenly remembered to call me, or is it so late?" I heard, didn't you go to the test flight institute today? What, you're not with Tingting? ”

Even Song Lao thought of this layer, and Qin Feng's face turned even redder.

"Old Song, there is one thing, I want to talk to you." Qin Feng said: "It's about stealth aircraft, the Americans announced their F117A stealth aircraft last year, you should know, right?" ”

"Yes, this plane came out to stop vomiting, Britain and France made a sensation, of course we know." Song Lao said.

"So, you see, is this going to be a trend of the future? Later we will even meet stealth fighters? Qin Feng asked, there was still a sentence in his mouth that had not been spoken, so, did the J-10 we are developing now lag behind at the beginning?

Hearing Qin Feng's question, there was a pause on the other end of the phone, and then he said: "That's right, in private, we already have an opinion, the future era belongs to stealth aircraft, but it will take a long time for that era to come." ”

When he heard the previous words, Qin Feng's mood was heavy, but the turning point in the back made him feel at ease again.

Now there is no need to worry about the sky, it's still early.

As if he knew what Qin Feng was thinking, Song Lao continued: "Look at the current configuration of the F-117A, it is almost the most criticized by aerodynamics experts, this shape completely compromises to stealth, resulting in a lot of air resistance, we all analyze, this kind of aircraft is just a subsonic aircraft." ”

Subsonic aircraft!

After the end of World War II, there were jets, and then they attacked the speed of sound, Charles Yeagle, the test pilot that Qin Feng admired the most, broke through the sound barrier in 1947, and now, twice the speed of sound is already the speed that a fighter should normally have, and there is even a MiG-25 that can easily fly to 3 times the speed of sound.

At this speed, there are still planes that can't even reach the speed of sound, or is it a fighter, an aircraft starting with F? This is, of course, a big flaw.

In order to pursue the ultimate stealth ability in an all-round way, it has weakened all other performances, and even if it is not already in service, I really doubt that this thing can fly.

So, even if there were, it would be impossible to make such an aircraft have a high speed.

"Of course, we also have to see that the Americans are carrying out a research and development program for a fourth-generation aircraft, which is said to have an indicator of stealth, and the maximum speed can reach Mach 2, so we can see that this aircraft will use engines with a thrust-to-weight ratio of more than 10, and in the absence of powerful engines, everything is in vain. All worries are useless. ”

Song Lao's words completely resolved Qin Feng's nervousness, when he saw this plane, Qin Feng immediately had a sense of urgency, the world's aviation technology is developing so fast, we must catch up in great strides.

And now, Song Lao is telling Qin Feng to be down-to-earth and do what we should do, before we have an advanced engine, these are all delusions.

The West already has a third-generation aircraft with a thrust-to-weight ratio of about 8, and if you want to achieve the take-off of the fourth-generation aircraft, you need an engine with a thrust-to-weight ratio of 10, but what about the country? The only thing that can be taken out is Spey, and the thrust-to-weight ratio is 5.5, which is a big gap.

We are now on the stealth machine project, it is absolutely impossible, it is not easy to do a good job in the current project in a down-to-earth manner, of course, this does not mean that everyone will give up, in fact, Song Lao already has an idea in his heart.

Catching up with the pace of the world's advanced level, will never stop, now, although in the research and development of the third generation of aircraft, there are still a large number of countless problems, but Song Lao's vision is longer, has seen the future, his own party will definitely engage in stealth aircraft!

When the No. 10 project is developed, and Song Lao's physical condition still allows, he will go to the stealth aircraft, catch up on the third-generation aircraft, and surpass on the fourth-generation aircraft!