Back to the Republic of China to be a editor

"The fourth group, the laser measurement group." Tang Hua looked at the group leader Yang Zhen, "Your tasks in the near future are rangefinders and level instruments. The laser rangefinder modulates a certain parameter of the laser to measure the distance to the target. The laser level instrument Not only to measure whether the plane is level, but also to measure whether the plane is uneven or scratched... The long-term goal is lidar. As I said just now, light is also an electromagnetic wave, so it is also possible to build a radar. Both The azimuth and distance of the object can be calculated by measuring the time interval of the pulse signal sent and received."

"The fifth group, Li Qingzhong, your industrial laser group. There are a lot of research and development tasks, so you have the largest number of 6 people. Cutting, welding, material heat treatment, laser medical treatment... Your group is different from the first 5 groups. The previous group does not have Use the thermal energy effect of laser, but you have to use it, your group belongs to the category of high-energy laser.”

"The sixth group, laser confrontation..."

……

Tang Hua talked for more than half an hour, and the mission was distributed.After Tang Hua finished speaking, Zhao Zhongyao and Qian Sanqiang chatted with the students and answered some students' questions.

However, after the students listened, a few still felt that something was missing.

"Teacher Tang, where's the ... laser cannon?" A student asked.All the other students also joined in.

It seems that the laser show on the night of December 12 shocked them the most was the last shot.

Tang Hua looked at the students present and signaled them to calm down and not get excited. "High-energy laser weapons may become a reality in the future, but not now. Many problems still need to be solved if lasers are to be weaponized. It can only be achieved after two or three generations of technological revolutions. Now we first develop the types of lasers that can be put into practical use immediately. The first thing that needs to be solved in New China is the national economy and the people's livelihood. Therefore, the country's economic construction and national defense construction are urgently needed. Priority should be given to research on things that can be produced within a few years. Things that can only be put into practical use in the distant future have a slightly lower priority.”

The students nodded "oh".

Now my words are quite effective, and I can go in whatever direction I point, and almost no one has any doubts, at least in the field of technology... Tang Hua thought.

After the speech/lecture in the auditorium, the founders of the laser family—twenty or thirty senior students left in twos and threes.

"Mr. Zhao, fiber laser and fiber amplifier." Tang Hua said to Zhao Zhongyao again.

"We have mastered the basic theory of lasers, and it is not difficult to study various types of lasers." Zhao Zhongyao said with a smile, "After a few years, these technologies will be put into use, and our Department of Physics will flourish in the field of lasers."

"The branches and leaves are luxuriant, and finally grow into a towering tree." Tang Hua said.

……

Embassy of the Soviet Union in China.

With the permission of the Prime Minister, the military attache asked for a copy of the film of the laser weapon test firing from the Beijing Film Studio and brought it back to the embassy.

Luo Shen re-watched the test site that day.

"It's unbelievable, it's unbelievable." Roshen said, "Sharif, do you often read science fiction?"

Sharif shook his head, "I haven't read much, I've only read one or two Verne books."

In the novel "The War of the Worlds" published by the British novelist Herbert George Wells in 1897, it was written that the Martians used a "heat ray" (ray gun) when they invaded the earth on a huge three-legged machine. ).Since Wells, similar weapons have appeared many times in science fiction works.John Campbell's 1930 novel "Black Star Falling" followed the trend of Wells. Campbell was probably also influenced by the development of atomic physics and radiation science in the 2s. In the book, Wells' thermal ray weapon was clearly called a ray gun. .Even George Bernard Shaw imagined a ray capable of destroying munitions in his 30 play "The House of Heartbreak."

Of course, science fiction is a brain hole arranged on a scientific framework, so writers will not include engineering design drawings in their novels.But emitting a beam of light, pia killing people or burning them into black coals, seems to fit the characteristics of weapons in the future high-tech world.

"This is a weapon that has only appeared in science fiction novels before, and it may be the weapon of the future." Luo Shen said that the film was repackaged and put into a parcel box, "In front of it, no matter how strong the armor is, it will turn into a weapon of the future." Liquids, heavy tanks and battleships will all become scrap metal, and all aircraft flying in the sky will become living targets, because wherever we see, lasers can hit. Laser transfer firepower only needs to rotate the prism instead of the artillery or turret. More flexible than any weapon. Laser weapons also don't need bullets or shells, and don't have bulky barrels that are prone to wear and tear, as long as there is a thick enough cable, it can keep firing, firing, firing..."

Ambassador Luo Shen, who graduated from the School of International Relations and graduated from the Department of History with a master's degree, has been rambling on.As a liberal arts student, he was really excited at this time.In fact, it's not just a liberal arts student, the military attache next to him is from the Soviet Army, and he was also surprised after watching the movie clip with Luo Shen just now.

"I agree, Mr. Ambassador, fortunately this weapon was first invented by our ally, and next, if China is willing to share this technology with the Soviet Union, we can gain a great technological advantage over the United States.  … Even the Soviet Union It is also very worthwhile for China to pay some compensation.”

After loading the film, Luo Shen thought about it, took another piece of paper and started drawing.He drew the teaching building of the Department of Physics of Tsinghua University, the location of the scrapped truck, the location of the documentary film camera, and a laser beam shot from the building to the truck with a red pencil.

Finally, he drew a small circle in front of the teaching building of the Department of Physics, drew a line and wrote a line: "I'm right here!!!"

Chapter 1, the anti-aircraft artillery regiment, transform!

Beijing, Xijiao Airport.

"The target drone is ready."

The ground crew maintaining the target drone reported to the headquarters by walkie-talkie.

"Runway ready for takeoff."

Hearing "runway ready" from the front and someone waving a small flag, the leader of the remote control team shouted into the walkie-talkie: "Ground crew, start!"

The ground crew worked together to shake the propeller of the target drone vigorously and rotated it two or three times. The engine of the target drone converted from the old Nakajima 91 type was finally driven, and began to taxi along the runway under the control of the remote control team.

The nearest airport to the Ming Tombs shooting range is Xijiao Airport, which is only about [-] kilometers away.However, this is still beyond the visual control distance of the remote operator on the ground, so a relay remote control method must be used.A remote control group at the airport controls the plane to take off, and another remote control group monitors the target aircraft at the Ming Tombs shooting range to let him fly to the scheduled missile launch site.If the target plane returns (all the anti-aircraft missiles are shot into the air), then the Ming Tombs remote control team will fly back and hand it over to the airport remote control team at the control border.

The convoy of the air defense missile system had already stopped at the Ming Tombs and was on standby at any time.

Tang Hua arrived at the shooting range half an hour ago, and along with the car came the entire team of fire control computers from the Beijing Computer Institute and the Communication Institute.

"Before you were asked to increase the computing power of the fire control computer to solve two vector parameters at the same time, it was to prepare for multi-target interception. Of course, the current Hongqi-1 air defense missile still tracks and intercepts one target at a time, but in actual combat , in order to ensure a reliable interception rate, the front-line troops need to launch two anti-aircraft missiles at a time, so that they can be more sure to shoot down the aircraft in the first time. If two anti-aircraft missiles are launched one after the other in a short period of time to attack the same target, then the fire control computer still needs to provide correction parameters for the two anti-aircraft missiles, of course, there is only one target, which means that three quarters of the functions of the fire control computer you have compiled will be used now."

After getting out of the car, Tang Hua explained to the team leader Zhang Jue why the request was added.

"Actually, there is another reason," Tang Hua added, "I suddenly felt that the wooden box I gave you to limit the size of the fire control computer was too big..."

……

Tang Hua and the team members walked into the shelter while talking.This time, it didn't take long before the report from the radar station came from the walkie-talkie.The radar station on the shooting range has discovered the target aircraft, which is flying at a speed of 260 km/h.

This speed is a bit far from the speed of several US military jets on the Korean battlefield, even compared with the carrier-based aircraft on the US aircraft carrier.

Let's test it like this first.

Tang Hua first took a telescope to look at the position of the anti-aircraft missile. The launch vehicle had already started to move, and the radar and the missile turned seventy or eighty degrees at a fast speed, aiming at the sky.

When the target aircraft appears in the field of vision, the missile should always be pointed at the aircraft. Now even from the telescope, Tang Hua can see the anti-aircraft missile launcher rotating slowly driven by the rotation and pitch motors.After a few seconds, the field of view of the telescope was suddenly filled with smoke and flames, and the first anti-aircraft missile on the upper left side of the launcher was fired.Three seconds later, the missile on the upper right side was also fired.

Putting down the binoculars, you can now see with the naked eye two missiles flying towards the target aircraft one after the other.

The maximum flight speed of the Hongqi-1 air defense missile is only Mach 2, but in the early 50s, this flight speed was absolutely sufficient.There are no mass-produced supersonic aircraft in service yet. The maximum flying speed of several high-subsonic aircraft in service is just over 1000 km/h, and the maximum speed at low altitude is 2-8500 km/h. The speed is Mach 5, and the maximum range is [-] meters. Even if the missile is fired from behind, it has an effective range of [-] kilometers.

According to the predetermined procedure, the target drone flies at an altitude of 1500 meters. This altitude may not be accurate, because the original target drone completely relies on the remote operator's visual inspection and hand feeling to roughly determine the height.

Eleven or twelve seconds later, a puff of gunpowder smoke exploded near the flying target aircraft, followed by a second puff of gunpowder smoke.Now it is not clear which missile hit, or both missiles hit, anyway, when the smoke cleared, the target drone had split into two pieces and fell in circles in the sky.One of them is the fuselage and half of the wing, and the other is the other wing that was knocked out.

The crowd in the bunker was very excited, cheering and applauding one after another, just like the Tsinghua Department of Physics on December 12...

"Wait a minute, there is a second target drone." Tang Hua said.

In order to avoid mutual interference between the target aircraft and the target aircraft, the flight time interval between them is 10 minutes.

"Comrade remote operator, please operate carefully and carefully."

The second target drone is a target drone flying at an ultra-low altitude of 100 meters...

"clear."

The ultra-low-altitude flight of the target drone still relies on the technology of the remote operator, and now there is no time to install any autopilot or height measuring device on the target drone.Tang Hua could guess how nervous the remote operator was right now.But no matter how nervous you are, you have to pass the level. The most important thing for short-range air defense missiles is to hit low-altitude and ultra-low-altitude targets. When hitting ground targets, it must be attack aircraft and fighter jets flying low and licking the ground. the greater the threat.

After a while, the radar report found the target drone.This time, he probably found that the distance was relatively close. As soon as he spoke on the walkie-talkie, Tang Hua almost saw the target drone flying along the valley.For the sake of flight safety, this time the target drone did not pretend to make a turning maneuver, and flew flat at low altitude.

The fire control radar tracked the target aircraft again, the missile launcher rotated and tracked, and there were two "swish" and "swish" sounds, and two Hongqi-1s flew out.Now all the missiles on the quadruple launcher are empty.

There were two more explosions in the distance, and the fireballs that exploded were not very conspicuous against the background of the mountains.Because the altitude was very low, the target drone rolled and hit the ground, and the unburned fuel burned the wreckage of the target drone into a ball on the ground.About ten seconds later, two bangs and bangs of explosions reached Tang Hua's ears, with echoes like rolling thunder.