Came to the Chengfei Research Institute, Xia Yu and Wu Jianming went straight to the real yàn room, just outside the hangar gate of the real yàn room, Xia Yu saw that Yang Wei was already waiting for him, there was no nonsense, Yang Wei directly handed Xia Yu a piece of information, and said at the same time: "This is the ground test number of the static testing machine and the technical verification machine, now I am waiting for you to come back and make the first flight." ”

Xia Yu thanked him, and then followed Yang Wei into the real yàn hangar, as soon as he opened the door of the hangar, the first thing he saw was that the static testing machine was parked in a corner of the hangar, and another identical X20 technology verification machine was surrounded by staff, as if checking something.

At a glance, the X20 technology verification aircraft is designed and manufactured based on the overall architecture of the J-20A, so the shape has not changed much, and the most obvious is undoubtedly the cockpit that has been cut and trimmed into a streamlined shape that is integrated with the fuselage. Compared with the fuselage, the position of the cockpit does not have any protruding places, it looks more similar to the nose design of the UAV, and the gold absorbing coating further reduces the RCS value of the cockpit, compared with the information in hand, the ground RCS test value of X20 is almost low to the point of being undetectable compared to the J-20A of the teardrop-shaped cockpit.

Nodding, Xia Yu took a look at the wind tunnel test, and the number of jù was greatly improved, and then looked down, it was the test number of the engine, Xia Yu was happy, but he didn't expect that after getting the wreckage of the F22, the information obtained from the Pratt & Whitney F119P could actually make the WS15 make such a big modification. Compared with the original WS15, the length of the engine is shortened, the thrust of a single engine has increased to 175 kN, the shortened engine has reduced the weight, coupled with the weight reduction of the radar system, coupled with the use of more than 70% of lightweight composite materials, the thrust-to-weight ratio has actually increased by 1.67, and the basic number jù has been calculated to comprehensively surpass the F22.

The original plan was to shorten the fuselage of the X20, but after discussion, the tail of the fuselage was not greatly modified, but with the shortened engine, the main and side magazines and internal fuel tanks were redesigned, and the center of gravity did not change much, increasing the bomb capacity and range.

Circling around the X20, Xia Yu climbed into the cockpit, because of the low top of the cockpit, the entire cockpit was also moved into the nose, just by sight, it feels like sitting in a passenger plane, the field of vision is extremely limited, but this is not in Xia Yu's consideration now, because after wearing the display helmet, the whole X20 is like a transparent one, you can look at it wherever you want, and you don't need to worry about it now.

What makes Xia Yu care is whether the radar system installed in the X20 can work well, because unlike the J-20A, the radar carried by the X20 is a digital array radar, which is a fully digital array antenna radar formed digitally according to the beamforming mechanism, and the receiving and transmitting beams are digitally formed.

Compared with the J-20A active phased array radar, the all-digital array radar is undoubtedly much more advanced, this use of T/R module transmitter, receiver, exciter and local oscillator signal generator into one system, not only flexible signal processing, can transmit and receive multiple beams at the same time, but also because there is no phase shifter, the power consumption of the whole radar is low, and the reliability has been improved.

Digital array radar is actually a kind of phased array radar, but unlike ordinary phased array radar, digital array radar abandons the traditional digital phase shifter and a large number of power cables and control cables, which greatly saves space in the aircraft and reduces the weight of the radar, and more importantly, the digital array radar has a high degree of adaptability and multi-functional characteristics, which can not only be used for remote warning detection, target search and indication, target precision tracking and missile guidance, etc., but also can carry out electronic countermeasures.

That is to say, if the fighter is equipped with a digital array radar, its search radar, fire control radar, communication radar, early warning radar, electro-optical targeting system, electronic countermeasure system and other functions are all integrated, which greatly reduces the weight of the aircraft, which can not only greatly facilitate the operation of flight, but also improve the performance of the aircraft, which is the prospect of the future fighter radar application.

However, the digital array radar is not mature now, although it has been tried to be practical, but in fact, most of them are partially digital, such as J-20A, although it is also said to be a digital array radar, but only a small part of it has been digitized, and it is not a full digital array radar in the real sense.

In order to make X20 equipped with this kind of radar,Xia Yu also specially contacted CLP 14,The all-digital phased array radar that is still in their real room is asked,In order to convince CLP 14,Xia Yu didn't bother to salivate at the beginning,But it's finally as Xia Yu wants,What I have to do now is to test the stability and tolerance of this radar,Xia Yu is already planning to have a good time in the air。

Although Wu Jianming doesn't know those extremely professional numbers, Wu Jianming is not stupid, and it doesn't matter how this X20 is made, as long as he can know how to use X20. In Xia Yu's answer, the more Wu Jianming listened, the more surprised he became, this X20 had obviously exceeded his imagination, and the all-digital array radar alone had already made Wu Jianming unable to close his mouth at all, not laughing, but surprised.

Standing on the ladder frame and watching Xia Yu check the airborne systems one by one in the cockpit, basically born from the system integration of the gem platform architecture, so that Wu Jianming, who has piloted J-10B, J-11, J-15 and J-16 and J-20, does not feel unfamiliar, almost all over the huge screen on the front of this cockpit, clearly and accurately showing the status of the fighter, but in the new content in the combat number jù chain option, Wu Jianming has never seen it, so he asked: "Hey, Xiaoyu, what is that?" ”

Xia Yu raised his head when he heard this, looked at the place Wu Jianming pointed, and then smiled at Wu Jianming very proudly and said, "This is the big killing weapon I specially prepared for X20." ”

"What a big killer, don't tell me about these false things." Wu Jianming was dissatisfied with Xia Yu's answer, waved his hand and said, "Tell me more details." ”

Xia Yu didn't mind Wu Jianming's attitude, the two of them had long been familiar with each other so much that they didn't care about this kind of thing at all. casually pressed the option on the screen, and a square window suddenly popped up, Xia Yu pointed to the window and said, "Do you see the eight virtual aircraft in this window?" ”

Wu Jianming looked at the window that Xia Yu pointed to, there were two columns in the window, each column had four icons representing the aircraft, nodded to indicate that he saw it, and then Xia Yu casually put a little on one of the icons representing the aircraft, and the multiplexing display next to the window immediately changed, Wu Jianming's familiar combat window appeared on the multiplexing display, how did it look, it was exactly the same as the window table xiàn when the plane was flying, I didn't understand what Xia Yu wanted to say, Wu Jianming frowned and asked: "What is this?" ”

"It's a drone warfare network." Xia Yu smiled proudly and said: "X20 has a drone command network set up in the general control system, which can command eight drones to carry out tasks together at the same time, to put it simply, this is our neuron." ”