Set sail1992

Chapter 546 Test
In the eyes of everyone looking forward to it, the plane was finally delivered. Just looking at the several large and small wooden boxes in front of them, all the students and teachers of Harbin Institute of Technology were a little dazed: just this little thing?
The things in front of us are indeed a bit beyond everyone's expectations. In everyone's understanding, there are so many large and small parts in a helicopter, and many of the things on it are sophisticated aviation-grade equipment. Maybe an instrument needs to use a special shock absorber. Packing boxes, there are dozens or hundreds of boxes, it is impossible to fit them, but there are less than 10 boxes in front of my eyes, which is beyond everyone's expectations.

Zhang Qihang greeted everyone with a smile: "Come on, everyone, don't be idle, come and help, let's assemble the plane...Xiao Liu, take the biggest box apart, the assembly manual is inside the biggest box. "

With Zhang Qihang's order, everyone immediately stepped forward and carefully opened the largest wooden box.

When the box was opened, everyone knew that the largest wooden box contained the cockpit of the Robinson R22. Some students looked into the cabin and were disappointed. They couldn't help but said, "Isn't this too simple? "

"Yeah, why is it so simple?"

"Why are there only so many instruments?"

"It feels much simpler than Chujiao 6..."

"It doesn't feel like it's much simpler than Chujiao 6, but it's really much simpler than Chujiao 6. Look how many gauges are there? There are only 6 of them, and Chujiao 6cm has more than a dozen gauges alone. One, plus various control switches... Let me go, why do you feel that this Robinson R22 has only one control system, let alone a backup control system, it seems that there is not even a backup instrument?"

"Hey! Don't tell me, it's true, there is really no backup instrument."

"Maybe the Americans are very confident in their technology and feel that there is no need to back up the meter?"

"Nonsense! From my point of view, this company is saving costs. If you look at the aircraft produced by Boeing and McDonnell Douglas, which one does not have several sets of flight control systems and several sets of backup instruments? Could it be the technology of this Robinson company? Better than Boeing and McDonnell Douglas?"

"Huh? What you said really makes sense..."

…………

Harbin Institute of Technology students, especially the students of the School of Astronautics, surrounded the Robinson R22 in front of them, talking non-stop.

It’s no wonder that everyone’s reaction was so intense. It’s because the Robinson R22 in front of you is so simple that it’s beyond everyone’s imagination. The whole helicopter only has the six most basic components such as the horizon, altimeter, airspeed gauge, and engine tachometer. The most important instruments related to flight, except for these 6 instruments, there are only communication radio stations and transponders necessary for air traffic control, and nothing else.

As students of the School of Astronautics, everyone is no stranger to airplanes. Although they have never actually flown in the sky, they also know from textbooks and various periodicals in the school library that the control and instrumentation systems of military and civilian aircraft are roughly the same in the world today. What it looks like, it can be said bluntly, the Robinson R22 in front of you is beyond everyone's expectations: there is no backup control system, no backup instrument system, it seems that even the control system is still the oldest cable type, In other words, the control system on the Robinson R22 is not worthy of being called flight control.

In fact, not only the students were surprised by the configuration of Robinson R22, but also the teachers and professors of Harbin Institute of Technology. They really couldn't imagine how a helicopter could be so simple.

For example, Deputy Dean Wu of Harbin Institute of Technology, who came here from Bingcheng specially for the agricultural plant protection helicopter project of Huateng Industrial Group, frowned and said: "This aircraft is too crude, isn't it? How can there be a backup horizon?" nothing?"

With the horizon indicator, you can know what kind of flight attitude the aircraft is in now. If the aircraft fails, such as engine shutdown, etc., the pilot must make a judgment based on the information of the horizon indicator. You can say it bluntly. Well, the horizon is the most important instrument on an airplane, and it’s fine if there are no backups for other instruments, but there is no backup for the horizon?
This is really beyond Vice President Wu's imagination.

Zhang Qihang said with a smile: "Dean, you have to think about it this way. The price of this plane in Millikin is only 10,000+ US dollars. It belongs to the plane that the slightly affluent middle class can afford. Since it is so cheap, Then it is impossible to give too many things. In terms of configuration, it is basically at the level of 'it can fly up and land safely'. If it is not so strict in cost control, how could Robinson rely on such A plane is alive and well?"

After a pause, Zhang Qihang said: "What do I think? No matter how much we look down on you, Robinson's way of controlling costs and ensuring product quality is still worth learning. As for what we will do in the future The appearance of the helicopter is actually simple, although the cost must be controlled, but the control cost belongs to the cost control, and there must be some backups, at least several backup instruments, right?"

"what……"

Hearing what Zhang Qihang said, Vice President Wu couldn't help laughing, then nodded and said: "Indeed, when it comes to making airplanes, we are still stuck in the idea of ​​'national projects', and many things can't be changed for a while. , but if it is only used as an agricultural plant protection aircraft, this Robinson R22 is indeed enough...By the way, what is the maximum load of this aircraft?"

I can only say immediately with a flag: "The total load of passengers, luggage and fuel is 176 kilograms."

Vice President Wu frowned: "The total load including the fuel is only 176 kilograms? That's a bit small, but if it is used to modify the plant protection aircraft, a pilot of about 65 kilograms, about 25 liters of fuel and medicine barrels and necessary Pesticide spraying equipment... Calculated from this, it can only hold seventy or eighty liters of pesticide."

"It's almost like this," Zhang Qihang nodded and said: "But it's okay, referring to the amount of pesticide sprayed by manned aircraft, it is about 0.2 liters of special aviation pesticides per mu of land, and 80 liters can spray 400 mu of land."

"Plant protection of 400 mu of land can be carried out in one take-off and landing? That's quite powerful," Vice President Wu nodded immediately after hearing this: "By the way, Xiao Zhang, I'm not familiar with helicopter agricultural plant protection. You Tell me, if you use a helicopter to spray pesticides on the farmland, what is the efficiency of the operation?"

Huateng Industrial Group has been working on plant protection unmanned helicopters for such a long time, Zhang Qihang is very familiar with these data, so after hearing this, he immediately said: "According to the statistics of the agricultural departments of various countries in the world, if it is used According to the different crops, the helicopter can perform plant protection operations on 0.25 mu to 0.45 mu of farmland per second; that is, the operating area per minute is between 15 mu and 27 mu.”

"The operation efficiency is so high?" The data given by Zhang Qihang stunned Vice President Wu: "It can work on so much farmland in one minute, so take the middle number, 1 mu per minute, this machine The Robinson R22 can take off and land once in about 22 minutes.

If the efficiency is higher, the proportioning of medicines will be started when the plane is operating, and when the plane lands, it will add medicine to the tank while refueling. Wouldn't the working area be 1200 mu for one hour? "

Counting this, Vice President Wu's face is full of surprise:
Looking at this Robinson R22, it is so simple that it cannot be simpler. In daily use, there is probably no need for maintenance other than changing the oil and filter. In this way, one aircraft with 2 pilots is calculated. It is absolutely no problem to work for 8 hours a day, so if the plant protection work is carried out on crops that are relatively easy to take care of, such as wheat, the daily work area can even exceed [-] mu!

This is amazing.

Zhang Qihang nodded: "It's almost like this."

After a pause, Zhang Qihang went on to say: "The Robinson R22 aircraft is designed with the original intention of travel, and it emphasizes speed, so the cruising speed can reach 177 kilometers per hour, but we are different. Since it is agricultural plant protection, we can There is no need to pursue speed, on the contrary, load is what we should put first.

Mr. Wu, what do you think is the maximum load that can be achieved without emphasizing the speed based on the hardware of this Robinson R22? "

Vice President Wu did not immediately answer Zhang Qihang's question, but asked in surprise, "This plane can reach a speed of 177 kilometers per hour?"

After getting Zhang Qihang's affirmative answer, he nodded and said: "If you don't pursue speed, it's easy. Although I haven't calculated it, but according to my experience, it is no problem to achieve a load of more than 200 kilograms. If you design it Sacrificing speed and focusing on load, I think it is not a big problem to achieve a load of 220 kg."

220kg max load?
A full 46 kg more than before?

Wouldn't it be possible to add a 120-liter medicine box?

Zhang Qihang is really very happy: the more medicine he carries, the less times he needs to take off and land, and the longer the operation efficiency is, the higher it is, which is really good news.

Thinking of this, Zhang Qihang became a little impatient. He said excitedly: "Teacher, since this is the case, let's quickly assemble the plane and test it after it is assembled."

"Alright."

Vice President Wu nodded. He was also looking forward to Du Yu's next test.

........................

For this test, Zhang Qihang put in a lot of effort, and even hired a helicopter pilot from the Army Aviation Unit of the Shungeng Military Region to help.

Private companies should not even think about hiring an active helicopter pilot from the Army Aviation Force, but Huateng Industrial Group is different. It is a state-owned enterprise that Langya region focuses on!

An official letter from the region was sent over, and the military region readily agreed without saying a word: it was just a temporary loan of a pilot to help test the plane, which is trivial.

What Zhang Qihang didn't expect was that this news aroused the curiosity of relevant leaders of the military region. For this reason, the military region specially called Zhang Qihang. After some introductions, the other party asked Zhang Qihang: "Mr. Zhang, What about your helicopter?"

"That's what happened..."

Zhang Qihang didn't hide it either, he said that he planned to develop a two-seater ultralight helicopter for agricultural plant protection, and then bought a second-hand two-seater ultralight helicopter from abroad as a reference.

After Zhang Qihang finished speaking, the other party keenly grasped the key points in Zhang Qihang's words: "That is to say, this plane is a civilian two-seater helicopter produced by a private company in Millikin, and the price is very cheap, right?"

"Is such that."

"You just said that many aviation schools in the United States for civilian training pilots also use this helicopter as a trainer?"

"It's him who has such a thing," Zhang Qihang heard this, somewhat understood the meaning of the other party, and asked carefully: "Director Wang, what do you mean..."

"Mr. Zhang, I won't hide this from you," Director Wang said with a smile on the opposite side: "You should understand that if our troops want to ensure combat effectiveness and pilots want to maintain their flying skills, daily flight training is indispensable. However, the Mi-17 helicopters equipped in our army, not to mention how much aviation fuel is consumed for one flight, the life of the fuselage and engine consumed alone makes everyone very distressed. I thought, since this Robinson R22 can be selected as a helicopter by the aviation school A trainer aircraft, the basic performance should be good, and it can undertake part of the daily flight training..."

That's it!

Zhang Qihang didn't know whether to laugh or cry: Does this count as luring wolves into the house?
In fact, at the beginning of this manned plant protection helicopter project, Zhang Qihang thought about expanding the use of this helicopter as much as possible in the future, and the entry-level trainer itself is in Zhang Qihang's plan, but he is not in a hurry. He decided to do plant protection first, and then transition to trainer aircraft after accumulating data, but what Zhang Qihang didn't expect was that the army was so anxious, and now his heart is moving.

It is also understandable that the cost of using real military aircraft is too high, so even in Millikin, using trainer aircraft to maintain the pilot's basic flying skills is one of the effective ways to reduce costs.

But there is one thing Zhang Qihang knows, that is, China's army aviation unit has never been equipped with the Robinson R22 aircraft. Then this time is also an opportunity for our army to get in touch with and understand this aircraft... well, there is no problem on our side. If the situation of our army allows, we can come to some more people to inspect and learn about it This plane."

Hearing Zhang Qihang's words, Director Wang immediately grinned: "Hehe...is this convenient?"

Zhang Qihang said with a smile: "What's the inconvenience? We are a family of soldiers and civilians, everyone just come!"

(End of this chapter)