Chapter 258 Jamming pod test!
The two pod prototypes were completed several days earlier than previously expected.
This is not a surprise. After all, anyone who has been Party B knows that when writing a deadline, you must add a period of grace on top of the normal progress just in case.
Chang Haonan and Xu Yang came to the production workshop from the dormitory area as soon as they received the news.
Two pods, one large and one small, were lying quietly on the brackets specially designed for them.
Although the engineering prototypes are still in a very rough state, they can still provide a glimpse of what they will look like in the future.
There is nothing much to say about the large pod. It is just a proportional copy of the captured product, with only components and part of the program code replaced according to Chang Haonan's design.
The synthetic aperture radar that originally occupied the middle position of the pod has been handed over to another group, and this test does not involve the radar reconnaissance part, so it was replaced with a counterweight block of equal weight and size to prevent The pod was too heavy at both ends and too light in the middle, causing structural problems in the air.
The small pod sells much better, because it was designed to be carried by tactical aircraft under the wings, so it was designed into a long strip with curvature around it.
And in order to ensure compactness, an impact generator with a smaller size and power was chosen, which was installed at the rear of the pod through two air inlets instead of at the head to avoid interference with the transmitting antenna here.
The overall appearance is similar to the K/RKL800 large electronic jamming pod (export model KG800) that was commonly equipped on heavy fighters and bombers in previous generations.
The only price is that it cannot be completely powered by itself like that large pod, and needs to be supplemented by a carrier aircraft.
不过对于发电功率为18kw*2的歼8C和15kw*2的歼轰7来说都不是问题。
Not to mention the domestic Flanker family whose power generation capacity will be as high as 30kw*2 or even higher in the future.
"Good stuff, good stuff."
Chang Haonan patted the pod shell in front of him, which looked a bit like a semi-finished product, and felt quite satisfied.
In the previous life, the Chinese navy and air force suffered losses from American electronic warfare equipment in the naval and air confrontation for a long period of time.
Although they only have one more interference pod now, everything is difficult at the beginning. With the breakthrough from 0 to 1, it will be a matter of course for them to go from 1 to 10 or even to 100.
"By the way, where is Guo Gong?"
Chang Haonan was just about to call for people to conduct ground power supply and signal input and output tests, but after looking around, he found that Guo Lin was not there.
In fact, everyone rushed over temporarily after receiving the news, and many people had not yet arrived. However, Guo Lin usually has food and accommodation at the residence, so he is always the first to arrive when something happens. Today It was a bit strange that he didn't see anyone else for such a big thing as the pod being offline.
"Gong Guo... I don't think I've seen Gong Guo today?"
Someone said after thinking for a moment.
"I remember that Guo Gong seemed to say two days ago that his younger brother came to Jinling to join him. Maybe he was arranging for family members?"
"..."
Just as everyone was talking to each other, a panting Guo Lin finally appeared at the door of the workshop.
"Is everyone here already?"
Guo Lin took a look and found that among the more important people, he was already the last to arrive. He couldn't help but explain:
"A relative is here. He took half a day off today and just came back from outside."
Regarding this kind of thing, Chang Haonan didn't have much idea to gossip. After Guo Lin calmed down his asthma, he announced the start of the test.
"Prepare for the first round of testing, step wave frequency shifting, jammer starting modulation frequency 1MHz, interval 0.4MHz, interference-to-signal ratio 8dB, 10-segment pulse..."
The ground test does not really use a radar to illuminate, but directly inputs a simulated signal into the system to detect the output. Considering the resolution of the detection equipment, in order to facilitate observation, the frequency of 10Ghz is not really used. In fact, it is equivalent to a basic program debugging process, which mainly detects the basic logic and algorithm functions of software and hardware.
The process is not complicated, but it is time-consuming.
According to the tasks assigned in advance, several staff members quickly began to adjust the settings of the jammer and signal generator.
Chang Haonan also walked aside, preparing to check the waveform displayed on the oscilloscope screen.
At this time, I happened to hear the conversation between another engineer and Guo Lin next to me.
"How are you going to arrange Xiaoyu?"
Judging from this tone, the two of them should be relatively familiar with each other. Combined with the fact that someone just mentioned that Guo Lin has a younger brother who came to defect to him, it is not difficult to guess Xiaoyu's identity.
"Let's find him a job as a helper first, and we'll see if we can find a more suitable job later."
Guo Lin sighed lightly and replied.
"Don't worry too much. Your brother has such skills as a carpenter. Doesn't he still have to worry about not having enough food to eat here?"
Another said with relief:
"When this busy period is over, I'll ask your sister-in-law to go to Nanjing Automobile to inquire about it. They said before that the shortage of workers is severe."
“It’s not a question of whether we can have food or not.”
Hearing his friend's comfort, Guo Lin had a wry smile in his tone:
"He changed his age when he graduated from junior high school when he was 15 years old. He took over from my father and worked in our cable factory. If you really want to look at his household registration, he is actually my brother. He has never left the factory for or years, and now suddenly After receiving the notice to be laid off, I was afraid that he would not be able to change his mind..."
Another helpless story under the tide of the times.
Chang Haonan suddenly remembered the Lao He family mentioned when his parents said they would arrange a blind date for him during the winter vacation.
Although he had no memory of the name, the experiences of dual-income families should be generally the same.
In fact, even many single-income families cannot afford it. In this day and age, it is definitely not possible to support a large family with just one person's income.
At this moment, with a beeping sound, the test officially began.
Everyone then devoted all their attention to the data and equipment in front of them.
"Oh...the quality of this fake target is very high."
Xu Yang stood behind Chang Haonan, looking at the signal waveform displayed on the oscilloscope, his tone full of excitement.
"Yes, it's no wonder that both ground radar and the radar on our aircraft are deceived..."
Chang Haonan nodded:
“7个假目标，10ms、14ms、18ms、22ms、26ms、30ms、34ms，而且除了第一个稍弱之外，所有的信号特征都比真实目标更强，我是雷达我也犯迷糊。”
Chang Haonan recorded all the data, and then quickly issued the order again:
"Prepare the second segment, piecewise linear function frequency shift, starting modulation frequency 1.5MHz, interval 0.4MHz, frequency modulation slope 20KHz/ms, interference-to-signal ratio 8dB, 4-segment pulse..."
A completely different signal appeared on the oscilloscope.
Different from the large number of false targets just now, this time, the signal peak of the real target was covered up by a dense multi-segment coverage interference.
This is a mode that the original pod does not have, and it works well for some radars whose absolute power is not strong enough.
Xu Yang gently waved his fist in the air - it was she who came up with the idea of joining this mode.
Reproduction does not mean copying the original, but improving and developing on the basis of the prototype.
"..."
The ground testing process ended up taking a full day.
At each of the predetermined test frequencies, the results were very successful.
As for more complex tests, since the microwave anechoic chamber of the 14th Institute is still under construction, the real results can only be seen in the sky.
"Lao Guo, prepare to fly to Yanliang!"
Chang Haonan recorded the last data on the paper, raised his head and said to Guo Lin next to him.
