Set sail1992

Chapter 380 Awesome
One key to set the flight altitude?
And the flight height is adjustable?

As soon as this idea came out, the eyes of several professors and graduate students in the School of Electronics and Information Engineering immediately lit up: this method is wonderful!

Including the Yamaha R-50 unmanned plant protection helicopter, the current fuel aircraft models only have the most basic YCS flight control. This flight control system can only achieve the most basic stability control. The flight attitude of the aircraft depends entirely on the pilot's feel and experience , so pilot training is very difficult, but if the aircraft can automatically maintain a certain flight altitude, this is the YACS flight control, or half-YACS, simply put, the pilot only needs to control the flight direction and speed of the aircraft That's enough, the attitude and altitude of the aircraft are controlled by the flight control system.

A professor from the School of Electronics and Information Engineering thought for a while, frowned and said, "It is possible, but how to ensure the distance between the plane and the ground?"

"It's simple," Zhang Qihang said without hesitation: "We can learn from the basic working mode of radar or sonar, and build a small radar or radio detection equipment. The detection distance does not need to be too far, and the power does not need to be huge. It only needs a detection distance of 10 meters."

"A low-power radar or sonar? This is a good idea," and the eyes of the professor from the School of Electronics and Information Engineering lit up: "But in this way, the cost of research and development will increase again..."

"That's easy to say," Zhang Qihang knew what the professor meant, and immediately followed suit: "I will sign a supplementary agreement with you later."

This thing can be further reduced in power and installed on the car in the future, it is the reversing radar, it is perfect!
When the reversing radar appeared, Zhang Qihang is not very clear, but what he knows is that anyway, the luxury cars currently on sale in China, including his own Toyota Dabawang, and a Cadillac Fleetwood from the Provincial Foreign Trade Bureau do not have it. Reversing radar, since the current car does not have a reversing radar, then I can use this opportunity to get this thing out.

The professor's face was full of smiles: "Then I'm fine."

It was Zhang Qihang, whose inspiration suddenly came, and then said: "Since the flight altitude can be set, can the flight distance be set?"

"Set the flight distance?" The professor was a little puzzled: "What's the use?"

"Let me give you an example to understand," Zhang Qihang said, "In addition, is it possible to build a centralized flight path, for example, if we set the aircraft to automatically turn a certain degree of turn after flying a certain number of meters, and after turning this turn How many meters to fly and then how many meters to fly straight... In this way, wouldn't it be possible for the aircraft to automatically spray pesticides?
Well, considering the different land areas, these parameters can be adjusted through an external laptop. Anyway, the procedures are the same. The difference is the adjustment of individual parameters. Mr. Sun, do you think it is feasible? "

"no problem."

Professor Sun readily agreed, he already understood what Zhang Qihang meant, and felt that this thing is not difficult at all: on the premise of knowing the current speed of the plane, set the flight time of each parameter, for example, at the current speed, fly 20 seconds and turn right 90 degrees, then fly for 2 seconds and turn 90 degrees, then fly for 20 seconds...

After a few cycles, the spraying operation on a piece of land can be completed, and as long as these time parameters and speed parameters are adjusted, the spraying operation can be carried out on different sizes of land, which is simply very suitable for this kind of agricultural plant protection machine.

Really, such a simple method, why didn't I think of it before?
Professor Sun was a little annoyed.

…………

Harbin Institute of Technology is Harbin Institute of Technology, except for the innocuous little problem of the layout of the medicine box, in general, Zhang Qihang can't find any faults with this drone, and even some things he didn't expect. Thinking about it, for example, if you choose to choose, the control distance of the remote control is only 300 meters. This distance is still a bit small, but considering that it would be very troublesome to simply increase the power of the remote control, two graduate students in communication engineering simply proposed A signal relay amplification scheme: directly install a receiver and amplifier for signal relay 200 meters away. With this signal receiver and amplifier, the remote control can control the aircraft at a distance of 1000 meters. This remote control distance , even if it is spraying operations for large state-owned farms in the Northeast, it is enough.

Now, there is only one question that Zhang Qihang is most concerned about: "Teacher, according to the current progress, when can the prototype be completed at the earliest?"

Professor Xu said confidently: "It's the end of the year, it should be almost there before the end of the year."

"So fast?" Zhang Qihang said in surprise, "I think it took Yamaha 50 years to develop the R-4..."

The same unmanned helicopter, Yamaha used it for 4 years, but it only takes half a year for me?
"In the field of aircraft, is a motorcycle manufacturer worthy of our Harbin Institute of Technology?"

When talking about this, Professor Xu became overwhelmed: "Let me tell you, Xiao Zhang, the biggest difficulty of your drone is the HT300 engine. In addition to the engine, it is like the structural design of the whole machine, aerodynamics, etc. , Control system, etc., for us, it is really no different from playing.

Do you think it took Yamaha 4 years to make such a drone, and you think they are amazing?But have you never thought that Yamaha did not have any technical accumulation in aircraft manufacturing before, but how much experience and technical accumulation do we have in assisting Hafei and Changfei in the development of helicopters for these years in Harbin Institute of Technology?Why should a company compare with us? "

This is the truth!
Zhang Qihang came to his senses in an instant, and realized that he had made an empirical mistake: Yamaha is indeed powerful in the field of internal combustion engines, but in the field of helicopters, why should Yamaha compare with Harbin Institute of Technology?

It's like the P-70 "Mustang" fighter was developed in just over 51 days during World War II. All of this is supported by profound technical background and experience. For Yamaha, they must It took 4 years to complete the design of R-50, but for Harbin Institute of Technology, half a year is already relatively slow...

However, Zhang Qihang also became excited when he thought that the design and finalization of this aircraft would be completed in half a year: "So, our aircraft can even catch up with next year's spring sowing?"

"Almost." Speaking of this, Professor Xu was also a little happy: "Let me tell you, the leaders of the school have been staring at this project, and everyone's appetite has been whetted by what you said before."

Zhang Qihang heard the good news and knew the elegant meaning: Harbin Institute of Technology is worried about money.

He immediately said: "Since this is the case, we will immediately start recruiting pilots. Teacher, when can we manufacture two planes for personnel training? We can use this time to train pilots."

(End of this chapter)