The rise of nanometers

Huang Xiuyuan asked with interest: "Dr. Chen, what other plans are there?"

"It is difficult to break through the energy density of batteries in a short time, but we have another high-energy material." Dr. Chen clicked on a feasibility report on the tablet.

Another high-energy material? Huang Xiuyuan reacted instantly: "N20?"

Dr. Chen nodded calmly: "Yes, it is N20. N20 has an energy density 17 times that of TNT. It is an excellent high-energy material."

Wang Defa... Huang Xiuyuan looked at the other party speechlessly. Can you think of some solutions that humans can use? Use N20 as energy fuel. If you make a mistake, you don't know whether the enemy will die or not. Soldiers equipped with exoskeleton armor will most likely need a box lunch. .

"It's too dangerous, if..."

Before Huang Xiuyuan could finish speaking, Dr. Chen interrupted him: "Mr. Huang, why do we have to stick to human driving? In fact, we can completely build intelligent combat robots."

"Uh..." Huang Xiuyuan was a little uncomfortable with this kind of leaping thinking, and he slowly said, "If you use an intelligent robot, you really don't have to worry about the dangers of N20. The problem is another risk of intelligent robots. Dr. Chen, you should understand of."

"Hacker intrusion and electromagnetic interference do exist, but this problem is not unsolvable." Dr. Chen calmly expressed his thoughts:

"To prevent hackers from intruding, the best solution is the independent small LAN system proposed by Mr. Huang in the smart home, which can completely avoid being hacked."

Physical isolation is indeed over, but Huang Xiuyuan still has doubts: "If a small local area network is used, it returns to the previous problem. There must be personnel nearby to assist in control."

"It can be controlled separately. Soldiers use battery-powered exoskeleton armor to control combat robots nearby. As long as the fighter robots and soldiers keep a distance of more than 30 meters, with the strength of the exoskeleton armor, even if the combat robot self-destructs, there will be no major problems. "

"The combat robot can also be used as a power bank when in a non-combat state. In addition, because it is controlled by personnel at close range, it can effectively resist electromagnetic interference. If you are still worried, you can actually connect an optical fiber cable."

Connect the fiber optic cable! ?

This suggestion reminded Huang Xiuyuan of those fiber optic guided anti-tank missiles.

This control method can indeed effectively avoid electromagnetic interference, but when you think about the picture of controlling a combat robot with an optical fiber line, it is simply not too weird.

The current optical fiber guidance usually has a range of 1 to 2 kilometers, and the special optical fiber line weighs 150 grams per kilometer. For exoskeleton armor, this weight is nothing.

"My idea is this..." Dr. Chen explained his idea.

The combat robot is equipped with a radio communication system with a communication distance of about 3 kilometers and an optical fiber communication system with a length of 1 kilometer.

Under normal circumstances, a distance of 500 to 1,000 meters is maintained between the combat robot and the controller. Once it encounters electromagnetic interference and there is no way to restore wireless communication, the combat robot will eject the fiber optic cable toward the controller. After the two complete the wiring, enter Fiber control mode.

"This solution has good feasibility, but when dealing with complex terrain, you need to consider the situation of fiber optic cables being broken or entangled."

"If it is a jungle or mountain forest, the control distance should be about 50 to 150 meters!" Dr. Chen has obviously done a lot of verification work.

Huang Xiuyuan returned to the topic of fuel: "The calorific value of N20 is about 17,236 kcal/kg, which is actually about 1.7 times higher than the 10,000 kcal/kg of gasoline. In addition, the generator needs to be redesigned."

Dr. Chen shrugged and smiled: "After using unmanned combat robots, the weight occupied by humans can be used for fuel reserves. 60 kilograms of N20 passivated fuel is equivalent to 102 kilograms of gasoline."

After a pause, he continued: "With the generator and the thermoelectric power generation module, the overall thermal efficiency of the power generation system is about 60%, which is much higher than that of a fuel engine."

Regarding this, Huang Xiuyuan did not deny that the thermal efficiency of gasoline engines is only 20% to 35%, while the thermal efficiency of diesel engines is slightly higher, reaching about 35% to 43%.

The efficiency of generators is indeed stronger than that of fuel engines. Combat robots use electric drive systems not only because of the high power generation efficiency, but also because of the low sound of electric drives, simple mechanical systems, and the size of electric motors.

Huang Xiuyuan touched his chin: "According to your design plan, if humans are not required to drive, the troublesome humanoid structure can be completely abandoned and a multi-legged robot can be used instead."

"We see the same thing." Dr. Chen nodded.

After speaking, he found several design drafts from the workbench beside him: "These are several multi-legged robots I designed. They can be said to be multi-legged mecha tanks."

Huang Xiuyuan took over the design draft, and there were three designs in total. The shapes were mostly similar to arthropods, similar to crabs and spiders.

The largest one is equivalent to a main battle tank.

Of the remaining two models, one is similar to an ordinary pickup truck and should be medium-sized; the last one is also the smallest one and is similar to a small tricycle.

Dr. Chen reminded: "The advantage of exoskeleton armor, or mecha, is that it is flexible and adaptable to fighting in mountains, jungles and urban lanes."

After reading the design draft, Huang Xiuyuan said with a smile: "In fact, it can also be designed for low-altitude flight. Using N20 as fuel, it can last about 4 to 6 hours."

"I've thought about this too. Personally, I think the price/performance ratio is not as good as that of drones. After all, drones can be used as consumables." Dr. Chen then added: "Combat robots can also be used as consumables."

What are consumables?

Huang Xiuyuan knows this very well. A combat robot using N20 as fuel is itself an extremely dangerous "bomb."

If the target is suitable, or there is really no way to bring it back, self-destructing combat robots are the best choice.

Dozens or hundreds of kilograms of N20 fuel are equivalent to the power of one or two tons of TNT. If an explosion occurs, unless it is equipped with a high-protection exoskeleton armor, it will definitely be a disaster within a hundred meters.

After discussing for a while, Huang Xiuyuan brought up the issue of generators:

"N20 generators need to be specially designed. Ordinary generators cannot withstand N20 explosions."

"I did supercomputing simulation experiments and drew some inspiration from nuclear explosion engines..." Dr. Chen explained his inspiration for the generator.

In fact, a small generator is similar to a diesel engine. He covers the surface of N20 with a layer of nano carbon powder to create "fuel particles", which are then injected into the combustion chamber and detonated.

After the N20 particles are detonated, the nano-carbon powder on the surface will react with the oxygen in the air for a secondary reaction, further improving the combustion efficiency, pushing the piston to cycle back and forth, allowing the generator to generate electricity.

The thermoelectric power generation system covering the outside of the combustion chamber will also use the waste heat of the generator to generate electrical energy to improve the overall thermal efficiency of the fuel.

The two discussed this plan in depth for several hours.

Hu Li, who was silent at the side, silently wrote down the various suggestions and ideas of the two of them.

Hu Li closed his notebook and suggested, "Mr. Huang, Dr. Chen, it's almost dinner time. Let's eat first before continuing."

Raising his hand, Huang Xiuyuan found that the time was around six o'clock in the evening, so he nodded.

Thank you all for your support (ω｀), and thank you to book friends "Qingtianyi", "Bookworm Guzi", "Book Friends 20490524 103546045", and "Book Friends 201905241006582 01"!