Set sail1992

Chapter 379

"Ms. Li, the layout of your drone..." Looking at the layout of the drone in front of him, Zhang Qihang shook his head helplessly: "Even the position of the medicine box has not been adjusted."

Probably because there is only one available commercial unmanned plant protection aircraft, the Yamaha R-50, in the world. This model is only used to show the overall layout of the aircraft, and its overall layout is extremely close to the Yamaha R-50. , and even the position of the medicine box has not been adjusted.

Faced with Zhang Qihang's dissatisfaction, Professor Sun of the School of Astronautics, who is in charge of the overall layout of the drone, was a little embarrassed, but he also had his own reasons: "Xiao Zhang, I understand what you mean, but Yamaha installed the medicine box under the engine, There is a scientific reason in the middle of the landing gear. Such a layout will make the center of gravity of the whole aircraft more stable. We believe that the design of such a medicine box is more scientific. This is not a question of copying or not, but we think such a design is more reasonable. "

"Yes, from the perspective of the aircraft, such a design is more reasonable," Zhang Qihang nodded in agreement with this opinion, but at the same time, he also put forward his own opinion: "But Mr. Li, you can't just look at the design and the aircraft. From your own point of view, you have to consider the purpose of our drone... You see, the reason why the landing gear of this aircraft is designed so high is because it needs to make room for the medicine box?"

The landing gear of this UAV is very similar to the landing gear of the UH-1 "Huey" helicopter, that is, the retracted skid landing gear, without wheels, just two poles on the left and right to support the aircraft. Go to X treasure to search for remote control helicopters, almost all of them are skid landing gear.

But generally speaking, for the center of gravity of the fuselage, the height of this kind of skid landing gear is not too high, it is only about one-fifth to one-seventh of the fuselage. In the model showing the layout of the fuselage, the height of the landing gear is even equivalent to one-third of the height of the fuselage. The purpose is naturally to leave enough ground clearance for the medicine box arranged in the belly of the fuselage.

Professor Li's face was a little ugly: "Since you think it's inappropriate to put the medicine box in the belly of the aircraft, how do you say it should be placed?"

As for Zhang Qihang, his mentality is a bit complicated. He is envious of this student's achievements and wealth, and feels that compared with this student, his teacher has lived for so many years in vain; Dare to question my decision?", but the question is whether Zhang Qihang or the patron's father: the general manager of Huateng Machinery Manufacturing Co., Ltd. is not a research dog in the ordinary sense, so he had to endure the depression in his heart and said: "Yes, we The R-50 was used for reference when designing the scheme, but since the Yamaha R-50 is the first truly mature commercial unmanned plant protection machine in the world today, their scheme must be the best result after repeated optimization. Why can't we use it directly?"

The implication is that the medicine box layout scheme of Yamaha R-50 is the most scientific and reasonable. Let’s learn from it directly. Is there any problem?

Although Professor Li didn't say these words, Zhang Qihang is not a fool, how could he not see what Professor Li was thinking?For this sake, if you don't put forward some valuable suggestions, you will really be looked down upon.So he was not polite, and said directly: "Simple! Lower the height of the landing gear, and then place the medicine box directly on both sides of the fuselage. If possible, the medicine box can even be designed as a quick release. In this way, ground personnel You can mix pesticides while the plane is performing the spraying mission, and when the plane comes back from the spraying mission, put on the medicine box and take off immediately.”

As soon as Zhang Qihang's voice fell, not only Professor Li, but also other professors and students of the School of Astronautics standing around were stunned: Can you still play like this?

But in the next second, everyone's eyes lit up collectively: Why can't we arrange it like this?

First of all, if the medicine box is placed on both sides in a way of one left and one right, there is no need to design such a high landing gear, and the height of the landing gear is lowered, and the center of gravity of the whole machine will naturally be lowered;

Secondly, the distance from the ground to the belly of the aircraft is limited, and a certain safety distance must be reserved, so the size, shape and size of the medicine box are strictly limited, but if it is possible to place the medicine box on both sides of the fuselage , then it is different, there is a lot of space available...

Nima, why didn't I think of such a way before?

But some people were not convinced, saying: "That's what I said, but if it is placed on both sides of the fuselage, the wind resistance will be greater?"

"Wind resistance?" Zhang Qihang laughed immediately: "Our plane is a pesticide spraying plane, and the speed of pesticide spraying will not exceed 20 kilometers per hour. What wind resistance do you think should be considered at this speed?"

As soon as Zhang Qihang said this, the man who had just questioned him immediately blushed.

And Zhang Qihang’s brothers from the School of Automotive Engineering laughed together: Yes, for a drone whose operating speed does not exceed 20 kilometers per hour, what wind resistance should be considered? !

Although the unmanned helicopter project of Huateng Machinery Manufacturing Co., Ltd. is a joint project of cooperation and participation of several colleges within Harbin Institute of Technology, it is obviously based on the School of Astronautics. Therefore, during the progress of the project, there will inevitably be some Arrogance, other colleges responsible for assistance and support, such as the School of Automotive Engineering, the School of Electronics and Information Engineering, etc., are not less angry with the School of Astronautics. I feel annoyed, but I feel much better... Zhang Qihang is also a student of Harbin Institute of Technology, so he is his own person. Since he is his own person, then everyone will naturally be happy to see the people from the Aerospace Academy with eyes on the top of his head. It's done.

Zhang Qihang didn't care about himself, he turned his head and said to the seniors of the School of Electronics and Information Engineering: "Brothers, I suddenly had an idea before I came here, let's listen to it and see if it can be done?"

"You said."

Zhang Qihang said: "Can you add some simple programmable functions to the aircraft, such as adding a function of 'setting the flight altitude' on the remote control. After pressing this button, the flight control system of the aircraft will automatically control the flight of the aircraft. At a certain altitude, to ensure the safety of the aircraft, it will not crash due to improper operation.

At the same time, the flight height can be adjusted through the flight control joystick, which is convenient to design different flight heights according to different crops... Do you think it is possible? "

(End of this chapter)