Siheyuan: Originally I just wanted to be a little transparent

That is the OXCART plan implemented by Yingjiang in 1959. In response to the ever-evolving aviation weapons of Mao Xiong during the Cold War, they proposed the idea of ​​conducting reconnaissance missions at an altitude of [-] meters and a speed of Mach [-].

But in those days, this was almost an impossible task.

Because at an altitude of [-] meters, the air is very thin and cannot support the sustained high-level output of the fighter engine.

However, Boeing, led by Eagle, and more than 15 companies, took 6 years to finally create the "SR-71 (Blackbird)", which can be said to be the most powerful reconnaissance aircraft in the world.

It is no exaggeration to say that the SR-71 reconnaissance aircraft is the most powerful reconnaissance aircraft in the world.

You know, during the Cold War, in order to defend against Yingjiang's high-altitude reconnaissance, Mao Xiong developed many advanced air defense weapons.

But despite this, Yingjiang has a reconnaissance aircraft that has been attacked by Soviet anti-aircraft missiles more than 5000 times, but has not been shot down once. This is Yingjiang's SR-71 (Blackbird) reconnaissance aircraft.

The SR-71 adopted the most advanced technology at the time, and its fuselage used a large amount of titanium metal, with a content of more than 90.00%.

The source of these titanium metals is very interesting. Almost all of these titanium metals are obtained from Mao Xiong's franchised countries through trade.

The use of this titanium alloy can ensure that the structural integrity of the aircraft is still maintained when the fighter aircraft is flying at high speed.

The power system of the SR-71 is provided by two Pratt & Whitney J2-58 turbojet engines. Its flight altitude can reach a terrifying 1 meters, and its maximum flight speed reaches Mach 25900. It can fly at ultra-high altitudes. Perform supersonic cruise.

As a reconnaissance aircraft, the SR-71 is equipped with reconnaissance equipment including reconnaissance cameras, infrared and electronic detectors. When photographed from an altitude of nearly [-] meters, even a license plate number can be clearly seen.

But the only drawback of this SR-71 reconnaissance aircraft is that it is too expensive to build. Not only is it expensive to build, but the later maintenance costs are also ridiculously high.

Therefore, even the wealthy Yingjiang only produced 32 aircraft in total.

After all, Eagle Sauce cannot afford the maintenance cost of US$3900 million per aircraft every month!

On December 1964, 12, the Eagle Air Force decided to provide Beale Air Force Base in California for the use of SR-7l strategic reconnaissance aircraft, and established the 7th Strategic Reconnaissance Aircraft Wing.

This wing is the predecessor of the 9th Strategic Reconnaissance Wing of the Eagle Air Force.

1965年，SR—71通过了鹰酱空军战略司令部的鉴定，并在1966年1月开始交付第9战略侦察联队使用。

On March 1968, 3, an SR-8 was deployed to Kadena Air Base in Okinawa to replace the A-71 in performing strategic reconnaissance missions.

Two weeks later, this SR-71 began to perform reconnaissance missions against Vietnam and China.

Calculating the current time, it is estimated that because the Usagi satellite was launched five years ahead of schedule, it is not impossible for Takajia to deploy the SR-5 to Kadena Air Force Base in Okinawa in advance.

Moreover, according to some gossip in the past life, it seems that Yingjiang developed the stealth technology of aircraft in the 60s, but it was not very mature.

This stealth technology is the technology that was later applied to the famous F117.

Perhaps Yingjiang was stimulated by the endless scientific research successes of my rabbit, and used the less mature stealth technology on the latest SR-71 in advance.

Although this technology may be only half-baked now, it is enough to beat the world's radar.

However, Yingjiang met Lin Shengli, so they were unlucky!
Lin Shengli just pulled out a meter-wave radar related technology.

This technology was used in later generations, during the war between Yingjiang and Big White Goose. Big White Goose used this meter-wave radar technology to shoot down Yingjiang's all-powerful F117 stealth fighter.

As for how this big white goose has advanced meter-wave radar technology and can obtain and hit two kicks accurately.

This is it!
Maybe someone picked it up in the desert!
"Shengli, what do you think about this matter?"

While Lin Shengli was recalling this in a daze, Dean Tang suddenly asked Lin Shengli a question.

Lin Shengli didn't react for a while, but before he could react from his daze, he heard Dean Tang's voice. It seemed that he only heard something and looked at it. Lin Shengli subconsciously replied: "Ah! What are you looking at?"

After listening to Lin Shengli's answer, Dean Tang's head turned black!

Later, Dean Tang asked helplessly: "I'm asking you, what do you think about the fact that our existing radar cannot detect the enemy's high-altitude reconnaissance aircraft?"

After listening to Dean Tang's narration again, Lin Shengli realized that this was what Dean Tang in the hospital asked.

So, Lin Shengli stood up, thought for a moment and said:
"Regarding this matter, I think this is a major breakthrough in Yingjiang's research on fighter technology and new material technology."

"They have developed a new type of supersonic high-altitude reconnaissance aircraft, and they have also applied a new type of material on it."

"And it is very likely that it is the combination of this new material and the new fighter aircraft that makes our radar unable to detect their reconnaissance aircraft."

"In fact, for new fighters, no matter how high it flies, although our radar cannot capture it particularly accurately, it will not be unable to detect it."

"So I think the main problem should be the technology of that new material."

"As for this new material technology, I think we can call it invisible technology."

As soon as Lin Shengli's words came out, although the people present were all elites in various fields in the scientific community, his words still shocked these people.Perhaps, this is the limitation of the times!

Compared to the comrades here, Lin Shengli, a time traveler, if only to see this with his eyes, is equivalent to standing on the shoulders of giants and overlooking the world.

"Comrade Shengli, don't you dare say such nonsense!"

"What stealth technology?"

"If that plane was really invisible, we wouldn't have been able to detect it!"

Regarding Lin Shengli's words, although Dean Tang has always believed in Lin Shengli's miraculous performance, what he just said was a bit too outrageous, so Dean Tang's words were inevitably full of doubts.

After hearing Dean Tang's questioning words, Lin Shengli was not too surprised.

You know, if we follow the normal historical trend, this will require the application of stealth technology on fighter aircraft, which will only appear on fourth-generation aircraft.

As for the fighters currently in service in our country, they are still mainly first-generation aircraft.

If it weren't for Lin Shengli's participation, he would have created the equivalent of a second-and-a-half-generation fifth master in advance.

If we follow the plan step by step, at this time, we have only produced a few test aircraft of our second-generation aircraft.

Now, Lin Shengli felt that the stealth technology developed by Yingjiang, even if it was only a half-baked stealth technology, was very unexpected when applied to the SR-71.

This kind of technology is beyond the imagination of our current scientific researchers.

Lin Shengli smiled at Dean Tang, and then the familiar stage of shock and education began again. Lin Shengli's popular science class began.

"Comrades, I think when you first heard the word invisibility, you may subconsciously think of the kind of invisibility that we cannot see with the naked eye."

"And the invisibility I just talked about is a kind of technical relative invisibility."

"Well, in order for everyone to understand and understand this concept better, let me ask you a question first."

"How did we discover the enemy plane flying at an altitude of tens of thousands of meters now?"

"Also, when we can see the enemy planes with the naked eye, think about it, at this time, they have already flown to our door and have already started dropping bombs."

After listening to Lin Shengli's question, the comrades present below looked at each other.

The expression on everyone's face was not about how difficult Lin Shengli's problem was.

On the contrary, the question Lin Shengli asked was too simple.

The question Lin Shengli asked, even if they are not comrades in the radar field, they all understand this common sense issue.

After Lin Shengli finished asking the question, a younger comrade who was not in the field of radar research stood up and said:
"Researcher Lin, I think everyone knows about this issue. We now rely on the early warning function of the radar to detect enemy aircraft."

Upon hearing this, Dean Qian, a top boss in the scientific research community, suddenly lighted up, as if he had figured something out.

But he still felt a little vague in some places, so he looked at Lin Shengli again.

After the comrade finished speaking, Lin Shengli nodded and said, "Everyone has heard it. What this comrade just said is right. Our current detection of enemy aircraft relies on our radar system."

"And the so-called stealth technology I just talked about is also relative to radar."

"The invisibility does not mean that it is invisible to our naked eyes."

"After all, if this is the case, then this is not science, but metaphysics!"

"The invisibility I'm talking about is invisibility relative to radar."

"Think about it, if our radar can't detect the enemy plane, then that plane will be invisible to the radar!"

After listening to Lin Shengli's explanation, Dean Tang and the comrades present finally understood what the so-called invisible technology Lin Shengli just said was.

And Dean Qian is probably the one who understands the most among these people.

However, despite Lin Shengli's explanation, Dean Tang had more doubts and questions.

Thinking of those doubts and questions, Dean Tang stood up and asked: "Comrade Shengli, although the concept of stealth technology you mentioned can indeed explain why our radar discovered the enemy's reconnaissance plane."

"But how can such technology be implemented?"

"You know, that enemy plane is a large reconnaissance plane. Although it flies high and fast, its size is still there. How could it not be detected by our radar?"

"Comrade Shengli, can you tell everyone about this in detail?" (End of Chapter)