The MiG-29N, which is still at the stage of project verification machine, still aroused great interest in Long Yun after the disclosure of the report.

After all, the RCS value of the MiG-29 fighter has long been no secret in the real world, and depending on the band of the irradiated signal, the typical X-band equivalent radar scattering area is about three square meters.

As a comparison, the N29 radar on the MiG-019 fighter has a detection range of about eighty kilometers for head-on targets of three square meters of the RCS; And if the numbers in the project report are true, the RCS of the MiG-29N is suppressed to about 0.1 square meter, and according to the principle of "the radar detection range is proportional to the fourth power of the target RCS", the theoretical detection range of the N019 radar on the MiG-29N will be reduced to about 35 kilometers.

From 80 kilometers to 35 kilometers, at first glance, this stealth ability seems to be a kind of chicken rib.

If converted according to such a ratio, based on the air situation detection capability of the AN/APY-1 radar on the US E-3A early warning aircraft, if the MiG-29N really achieves an RCS of 0.1 square meter (although Long Yun does not know how this is achieved), the detection range in the S-band will only be reduced from 400 kilometers to about 180 kilometers.

Reducing the detection range of more than 200 kilometers at once seems to be a great deal, but the MiG-29, which launched an attack at this distance, will have to further accelerate its penetration and not carry out a missile attack until it is close to within 50 kilometers of the E-3A -- and during this time, NATO's battlefield command system has every time to respond. Escort fighters near the "watchtower" were mobilized to intercept them. The AWACS aircraft itself will also change positions depending on the situation. When the threat increases, it simply slips away and turns around and disengages.

So purely from a theoretical point of view, it seems that the radar stealth capabilities of the MiG-29N are only better than nothing, and cannot be used to carry out the arduous task of hunting "watchtowers".

However, now Long Yun, because he has some research on many problems of radar detection, he knows very well that the so-called "fourth power root" law is just a theory, and the actual situation is far more complicated than a formula. If, just if, the RCS of the Low Detectability Verification Machine is really at the level of 0.1 million square meters, as the design bureau said. Then he can confidently conclude that the detection range of the E-3A "watchtower" early warning aircraft against the non-plugged MiG-29N fighter will shrink to about 100 kilometers, or even lower.

As an improved model based on the existing MiG-29 fighter, although he has not seen the real thing, Long Yun also knows that the MiG-29N's radar stealth ability is limited, and it is far from being called a real stealth fighter.

But even so, what does it matter?

Compressing the detection range of AWACS aircraft to a hundred kilometers is enough for the "hunt" operation.

……

During the journey, he thought about the situation of some stealth fighters, and when tiredness hit, Long Yun soon fell asleep.

After a brief slumber on the ultra-low-flying Mi-28N helicopter, he opened his eyes again in his sleep, and the dim instrument panel and the sleek cockpit bulkhead were gone. In the hazy vision, all I could see was the beige seat backs under the dim lights of the cabin.

Oh...... This should be on the liner. That is, to end the time travel and return to the real world.

Unconsciously, after experiencing another crossing on flight TG615, Long Yun thought that when he ended the crossing in the parallel world, he was also on a flying helicopter, he slowly took a few deep breaths in his seat, regained consciousness, and at the same time felt that his recent crossing had become more and more casual, or rather easier and easier.

Then again, where are the flights flying now?

Thinking about it, he turned his eyes to look at the side, there was still a dark night sky outside the porthole, and he couldn't see the starry sky clearly under the diffusion of light in the cabin, Long Yun raised his hand and yawned, he took out his mobile phone and proofread the time zone, and then determined that it was about two o'clock in the morning Beijing time. According to the display on the mobile phone, flight TG615 should have approached the India-Pakistan border and will land in Karachi soon.

Kindness...... Long Yun thought in his heart, it's okay to be like this now.

After all, in that parallel world, the Red Empire's strategic counteroffensive in the Caucasus had already begun, and the expected great progress was made on the first day of the "anti-radiation operation"; With the battle on the day of the decisive battle as a foreshadowing, he can now put his mind at ease for a while and continue to move forward on the trajectory of his life in the real world.

Although on this trajectory, what awaits him is just a battle in the sky.

Less than half an hour after waking up, the wheels of flight TG615 smoked green smoke on the runway and landed in Karachi, Pakistan's largest city.

After the flight stopped, according to the guidance of the flight attendants on the plane, Long Yun packed his little carry-on luggage, sandwiched it among the passengers who were shoulder to shoulder, and walked briskly in the airport hall when he came to Karachi International Airport for the first time, while looking at the bustling sunken eye sockets and dark-skinned people around him with a little curiosity; As a hurried passer-by who made a short stop during the journey, and had no intention of stopping to enjoy the hazy night view near Karachi Airport, Long Yun walked out of the gate with a travel bag on his back, called a taxi with a black background and went straight to the contact address, and gave the driver 20 yuan directly when he got off the car.

The rules of Karachi's taxi operation are a bit interesting, no matter how far or near it is, the price is 10 yuan, and only long-distance flights such as the airport need to give extra money.

Although it was still midnight local time, some hotels and restaurants in Karachi were still open 24 hours a day, including the Fasima Hotel, where Long Yun stayed this time; After registering his identity in the lobby of the hotel in the name of a personal trip, Long Yun found that the "organization" had booked a room for him, so he took the key card and went to the room to wash up briefly, and then forced himself to relax and sleep first anyway.

From Beijing to Baghdad, the total time difference of several hours cannot be completely ignored, since the task will be carried out immediately after arriving at the destination, Long Yun feels that it is better to solve the problem of time difference first.

I turned off the lights and rested in a daze, and I don't know if I really fell asleep.

Tossing and turning on the spring bed in the hotel, until he was woken up by a mobile phone ringing in his ears, he opened his eyes to find that the window was already bright, and Long Yun took it with sleepy eyes and saw that it was seven o'clock in the morning - this should be the local time in Karachi, right?

Looking at the number on the screen, in fact, he knew who would call, Long Yun quickly patted his face, made himself clear, and didn't say that he missed his mouth on the phone, and then picked up and spoke. On the phone, Su Xue, who had a soft voice, really asked him how the journey was and whether he had arrived in Pakistan and settled down now; Because the two sides did not use video calls, this was quite confusing to Long Yun, so he reported to Su Xue that he had settled down in the reception hotel in Karachi (which was completely true) and would soon go to the training base with the members of the exchange group who had arrived earlier (this is complete nonsense).

"Ah, Su Xue, Karachi in late autumn is quite cold,"

Half-truths and half-truths on the phone, Long Yun was now thinking of the subcontinental chill he felt last night, as for the specific situation in the hotel, he didn't plan to talk about it, so as not to say too much and lose it, "On the road, I don't have anything to worry about here." What about you, don't you have to go to work today? ”

"Ah, what do you say; To such a big and distant place, we are all very concerned about you~"

Probably after less than a day of separation, there was not much to ask, a pair of lovers on both ends of the phone chatted briefly, the little girl told Long Yun to pay attention to rest and diet, and then hurriedly ended the call for fear of delaying him to do business. Putting down his mobile phone and stretching his limbs on the bed in the relatively soft guest room, Long Yun seemed to remember something to do, he took out the tablet he carried with him from his travel bag, and downloaded a lot of information about Pakistan's customs and tourist attractions from the Internet, and then went out to the restaurant for breakfast, and by the way, he also bought two brochures about Karachi.

Yes, if you think about Iraq that you are going to go to, it depends on the current war-torn situation, and it is not certain whether there is a network available if you really get there; Since he is pretending to go to Pakistan, he must not stay in the base all the time as an instructor like squatting in prison, so if he can't say anything else when he is on the phone, I am afraid that Bing Xue's smart lover will find some clues.

After breakfast, with the booklet he had just bought, Long Yun followed the encrypted document prompts on his mobile phone to find the "organization's" liaison office in Karachi, which was actually a guest room in the Fasima Hotel building.

In room 5015 on the fifth floor of the hotel building, through the door of the room, the WIFI function of the mobile phone was used to pass the key and verify the identity. Before finding the contact location, I thought that the "operational liaison office" of the secret organization in Pakistan should be a secret front organization with a little scale; But I didn't expect that this was just an ordinary hotel room, and the layout inside was quite simple, as if no one usually lived here.

However, although the furnishings were simple, after a little movement and snooping with his consciousness, Long Yun knew that the alert-looking and light-skinned man in front of him was indeed an intelligence agent hired by the "organization" in Pakistan, although the suit of jackets and jeans on his body was not formal at all, and the clothing was a little too thin for the late autumn season. (To be continued......)