The plane went to shoot, but Xu Huaijin was really unhappy, and there was always a trace of worry on his face. [Ran^Text^Library] []. [774] [buy]. [com] .v d . m

Soon Xu Huaijin appeared in Zhang Yi's office.

Zhang Yi asked, "What's the matter with Huaijin?" ”

Xu Huaijin said sullenly: "Instructor, I always think that we sell too many planes, which will bring us huge safety risks." ”

Zhang Yi smiled: "Oh? How so? ”

Xu Huaijin replied: "Instructor, although light machine guns and anti-aircraft guns have been developed now, these weapons can only play a role when the plane is flying, and they are defensive weapons; Second, the flight speed of the aircraft is too fast, and the suddenness of the war he launched is too strong, which is a mortal threat to any army, including our Chinese Revolutionary Army, and now all countries are equipped with so many aircraft, and we ourselves will become the target of attack by a certain opponent, among which Tsarist Russia is the most, we are from the northwest to the northeast, and the entire northern defense line is wrapped up by Tsarist Russia, once they build the airfield on the border line, it is possible to launch a surprise attack on us at any time, especially in the northeast, The Daqing Oilfield is only more than 100 kilometers away from the Sino-Russian border, which is too dangerous! ”

Zhang Yi nodded and replied: "Yes, it is true, but we have judged that now Germany is pressing the border, the Sino-Russian border, the war clouds are heavy, and the Germans have hundreds of planes, which has brought huge pressure to Tsarist Russia, and they dare not deploy their planes to the Far East, Eastern Europe is their lifeblood, and the security of our northern territory is still no problem." ”

"What if? Instructor, we can't help but take precautions, the current Trans-Siberian Railway has already been completed and opened to traffic, and the total strength of Tsarist Russia is millions of troops, if it really has a bad intention, it is really difficult to say......"

Xu Huaijin analyzed in a deep voice.

Zhang Yi frowned, what Xu Huaijin said was not unreasonable, across the Yalu River, there is the vast East Siberia, and here are primeval forests. If Tsarist Russia quietly made two airfields in the primeval forest, it would be really troublesome, and now there are too few measures to deal with aircraft, it would be nice to have radar......

Suddenly, Zhang Yi's eyes lit up, radar, now it's almost time to promote the development of radar. Although in the last era, the advent of radar. It only appeared in the early thirties, but Marconi, who was the first to promote the emergence of radar, is now the director of the China Radio Research Institute! Moreover, the Doppler effect on the technical basis of radar was kicked out as early as the last century, and now the technical basis for developing radar has long been available, but no one thought of putting it into practice!

Radar, radar!

If once the radar appears, it will cause a change in the means of warfare in the whole world! Think about it, the enemy discovers first, and the enemy attacks first. This is the only way to defeat the enemy!

Especially in the current war, if the radar can accurately predict the appearance of the opponent's warships and aircraft, it can definitely launch a devastating blow by surprise!

Zhang Yi's eyes flashed, he stood up openly, and said, "Huai Jin, don't worry, I naturally have a strategy to defend against the enemy!" ”

Xu Huaijin was shocked. Seeing Zhang Yi's eyes suddenly brighten, he already knew that he had an idea, and hurriedly asked, "What idea does the instructor have?" ”

Zhang Yi smiled: "Let's go, let's prepare the car immediately and go to Tsinghua University!" ”

"Tsinghua University?"

Xu Huaijin was stunned.

Zhang Yi replied: "Yes, go to Tsinghua University." Come with me to inspect, Radio Institute! ”

Saying this, Zhang Yi had already begun to walk outside, and Xu Huaijin hurriedly followed.

Not long after, Zhang Yi had already arrived outside the door of the Radio Research Institute, which had already received a notice from the president's office, and everyone came to the door to welcome the arrival of the president.

Seeing Zhang Yi arrive. Director Marconi quickly won and said with a smile: "Mr. President, welcome to the Radio Research Institute!" ”

Marconi has been in China for seven or eight years, and he is already familiar with Chinese culture and fluent in Beijing films.

Zhang Yi smiled: "Mr. Marconi, but I haven't come to visit you for some days, what topics have you been working on recently?" How's it going? ”

Marconi smiled: "Mr. President, General General, let's invite you." ”

Entering the living room and taking a seat, Marconi replied: "Mr. President, now we are working on the small wireless walkie-talkie you mentioned last time, this instrument has aroused our great interest, and there has been some progress at present!" ”

Zhang Yi nodded and said with a smile: "Okay, I don't know if there are any difficulties?" ”

Marconi replied: "Now there is no problem with walkie-talkies for calls, but the problem we are facing is how to achieve miniaturization, and now the smallest walkie-talkie also weighs seven or eight kilograms, and it is very inconvenient for personnel to carry it......."

Zhang Yi nodded and replied: "Mr. Marconi, don't be too anxious about this, we will definitely achieve miniaturization, the problem is the problem of signal receiver and transmitter, as well as the problem of signal and voice conversion, I think it should not be too difficult." ”

Marconi said excitedly: "Well, Mr. President, we have contacted a research institute in Germany and asked them to cooperate to solve this problem together, and I think in another year or two, it will definitely be possible to carry it personally!" ”

Zhang Yi nodded and said: "Mr. Marconi, this time I came here to understand the recent research trends of the institute, and secondly, there is a new topic, I hope you can prevent relevant personnel from conducting research, this is very important for our country, if you encounter some problems, you can recruit and coordinate any scientific research personnel within the Republic of China to assist, my requirement is that within three years, we must achieve a technological breakthrough, and within five years, we can initially carry out mass production!" ”

Marconi was stunned, what topic had aroused such great interest in Mr. President? Even the development of this walkie-talkie has not made Mr. President so solemn, and it seems that this subject must be very difficult.

Marconi asked, "Mr. President, what is so important?" Can't we do it alone? ”

Zhang Yi said in a deep voice: "Because I want to develop a detection instrument that can break through the visual barrier and observe distant moving targets beyond the line of sight!" ”

Marconi was a little confused, detecting a moving target in the distance that could be out of sight? What does that mean?

Zhang Yi looked at Marconi's confused look, and sighed secretly in his heart, this matter seems to have been raised a little early, originally, the theoretical idea of radar was put forward by Marconi, but now when he talks about it, he doesn't even realize it!

Zhang Yi asked, "Mr. Marconi, have you heard of the Doppler effect?" (To be continued.) If you like this work, you are welcome to vote for recommendation and monthly passes, and your support is my biggest motivation. )