Set sail1992

Chapter 358 We Can Really Do It
Hearing what Zhang Qihang said, Xia Muqing was stunned: "Can you build this kind of agricultural unmanned helicopter?"

Can Huateng make something as advanced as Dongying?
"Well," Zhang Qihang nodded, and said, "I thought about it and thought that since it is a drone, its volume, maximum take-off weight, and load capacity should be much smaller than manned aircraft, and considering that Yamaha has not developed manned aircraft at all. Based on the experience of helicopters, I estimate that the maximum load of this unmanned plant protection helicopter should not exceed 20 kg, and the take-off weight should not exceed 60 kg."

Xia Muqing frowned and thought for a while, then finally nodded: "That makes sense."

"Follow this line of thinking and continue to think about it," Zhang Qihang continued: "There is an ultra-light two-seater helicopter in the United States called Luo Naxia R22. This helicopter can seat two people, and the maximum take-off weight is more than 600 kilograms. A 133-horsepower piston engine, and so on, an unmanned helicopter with a maximum take-off weight of about 60 kilograms, only needs an engine with a maximum power of 13 horsepower."

Xia Muqing nodded again, expressing his approval of Zhang Qihang's statement: Since a 133-horsepower engine can make a helicopter weighing more than 600 kilograms fly, then a 13-horsepower engine can make an unmanned helicopter with a maximum take-off weight of 60 kilograms fly. There is nothing wrong with the logic of a helicopter flying, and maybe even a 12-horsepower engine can make an unmanned helicopter with a weight of 60 kilograms fly.

"Coincidentally, our company now has a motorcycle engine with a displacement of 150cc. The maximum power of this engine is 12.6 horsepower, which is very close to 13 horsepower." Speaking of this, Zhang Qihang laughed himself: "After removing the clutch and changing the gear After redesigning and reducing the weight of some components, the maximum weight of the engine can be controlled below 20 kg, plus the reducer and other components, the empty weight of the whole helicopter should be controlled at about 32 kg, plus Add 4 liters of fuel, and the remaining 24 kilograms are just used for spraying pesticides."

Hearing this, Xia Muqing couldn't help but said: "How much farmland can be sprayed with 24 kilograms of pesticides? I have also been to the countryside, and I have seen pesticides being sprayed in the countryside. It seems that the ratio of two barrels of pesticides is not even half an acre of land. That’s enough, the weight of the two buckets of water is more than 30 kilograms.”

"Pesticides can be made thicker," Zhang Qihang said, "Think about it, the New J Construction Corps and those large state-owned farms in the three northeastern provinces use planes to spray pesticides. Hundreds of acres of farmland can be sprayed with pesticides, and the average amount of pesticides per mu of one acre of farmland is only about one kilogram. From this perspective, it should be sprayed with high-concentration pesticides.

Taking this as a reference, assuming that one kilogram of pesticide can really meet the spraying requirements of one mu of land, the 24 kg load of this unmanned helicopter can meet the spraying needs of 24 mu of land. "

The example Zhang Qihang gave was so convincing that Xia Muqing was immediately convinced: "It makes sense, but since it's a drone, the security control system should be difficult, right?"

Xia Muqing thinks so, otherwise why is there no unmanned plant protection machine like Dongying in China?But Zhang Qihang shook his head: "It shouldn't be difficult."

Xia Muqing said in surprise, "It's not difficult?"

"Well," Zhang Qihang nodded, and said, "There are a lot of people in our country playing fuel-fueled model airplanes, you know that?"

"Well, I've seen it before," Xia Muqing nodded, "My mother and their yard have a few children who like to play with this. I heard that a fuel airplane model is quite expensive..."

Speaking of this, Xia Muqing suddenly realized, and said pleasantly: "Yes, the radio control system of the model airplane can be used directly. Why didn't I think of it?"

Zhang Qihang smiled and nodded: "So, after such an analysis now, this unmanned plant protection aircraft is actually nothing. Anyway, this aircraft does not carry people and does not require flying speed. It is essentially a large-scale model aircraft. The difficulty It lies in the lightweight improvement of our company's HT150, the development of supporting reducers and rotor systems, and the precise matching of UAVs and control systems.

However, I would like to cooperate with my alma mater Harbin Institute of Technology in these two places... With the research and development level of Harbin Institute of Technology, this should not be a problem. "

In fact, strictly speaking, at this point there is only a usable platform, and there is still a long way to go from a real unmanned plant protection machine.

What is the concept of intelligent unmanned plant protection machine after more than 20 years?
It can realize fully autonomous operation, has working modes under various terrains, can return with one key, and has omnidirectional perception ability to automatically avoid obstacles, and what I am going to do now is at best a large helicopter model that must be manually controlled. The overall aerodynamic layout is very close to the traditional manned helicopter rather than the multi-rotor unmanned plant protection aircraft of later generations. The pilot needs special training to ensure the operation of this platform, and the distance between the pilot and the aircraft should not be too far , otherwise the connection between the remote control and the aircraft will be lost.

But the problem is that if this platform comes out, it will indeed have the ability of plant protection. Zhang Qihang even thinks that the unmanned plant protection machine launched by Yamaha is probably such a large model helicopter. The reason is very simple. The technology of this era The level is at this level, what can we do?
On the contrary, Xia Muqing, after hearing Zhang Qihang's words, was really surprised and delighted: Zhang Qihang's company can actually develop the most advanced unmanned plant protection machine in the world today?

She couldn't help but be full of pride!
Thinking of this, I suddenly remembered what Zhang Qihang said just now about asking me to help him find the information on Dongying's unmanned plant protection machine, and quickly asked: "You asked me to help you find the information on Dongying's unmanned plant protection machine, Just for this?"

"Yes."

Zhang Qihang nodded.

"What kind of information do you need?"

While asking, Xia Muqing had already made up his mind that he must try his best to help Zhang Qihang find what he wanted.

"It's mainly about the relevant documents issued by the Dongying government on the unmanned plant protection aircraft," Zhang Qihang said: "In addition, it is to find out what the overall technology of the unmanned plant protection aircraft sold by Dongying on the market today is. For example, once How much pesticide can be carried, how long can it work continuously, how many acres of farmland can be sprayed in an hour, etc., "

After thinking about it, Zhang Qihang added another sentence: "It doesn't need to be too accurate, just let me know what kind of technical level Dongying Agricultural Plant Protection Machine is at now. Of course, if you can sell one or two prototypes, it will be the best." All right."

"That's no problem, I'll help you find the information as soon as possible." Xia Muqing agreed happily.

(End of this chapter)