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Volume 2 Chapter 27 Forgetting the Year

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    The speed that originally rushed into the room was extremely fast, but in a short period of time it was reduced to a hovering state, and stopped steadily on a coffee table with a length of only 70 centimeters. Mr. Luo and his students were all experts, and at a glance  You can see that the intelligent technology contained in this is not comparable to that of any model aircraft. This is simply a drone!

    Seeing everyone around him dumbfounded, Luo Mingzhu smiled proudly and said, "Grandpa, how about this gift? Lu Xuan spent a whole day making this yesterday?"

    "A day's work?" Mr. Luo and several people around him looked at each other. Can such a thing be made in a day's work?

    Coaxial sculls use sleeve shafts to drive the upper and lower counter-rotating rotors. High-power sleeve shafts are mechanically very difficult. The sleeve shafts not only need to transmit power, but also the collective pitch and periodic pitch of the upper rotors.  Control is quite difficult in mechanical design.

    The blades of this drone completely use rigid intelligent rotors without flapping hinges to ensure that the upper and lower rotors will not collide during high-speed flight.

    These technologies are extremely advanced even in the military industry, and many of them are just concepts. If they are just made out of thin air without a lot of testing, even this kind of small drone will be difficult to achieve.

    Lu Xuan quickly said: "Grandpa, I have actually done these aerodynamic simulation experiments on the computer, and those parts have already been produced. I just assembled them yesterday!"

    "That's enough!" Mr. Luo looked at Luo Mingzhu and said, "Mingzhu, although you are not one of our technical experts, you still need to understand some common sense!"

    Mr. Luo looked at this drone and felt as if he had found a treasure. How could he remember to be his grandfather-in-law?

    "This is the American X-2 idea, Lu Xuan, what is the power of this helicopter?"

    "Using aviation gasoline, a special turboprop engine, the rotor power is realized through a gas transmission device, which is very similar to the power transmission between the American F35 engine and the lift fan, but our power distribution is achieved in a smooth way, starting the turboprop  The rotor power will not be cut off immediately!¡±

    "Distribute power? Is it for safety? In fact, there is no need to be so conservative. This kind of thing is a classic rotorcraft. Unlike the MV-22 Osprey transport aircraft, even if it loses power, it will not lose balance, but will land slowly through rotor control.  , Theoretically, there will be no crash at all!¡±

    The speaker was an old man, wearing a brand new black Chinese tunic suit. He looked very energetic. After getting to know Mr. Luo, Lu Xuan knew that like Mr. Luo, he was Zhang Jianjun, an old technician from Changhe Industry. Like them, there was an old man Xu Languo.  After the three brothers retired, they all got together because of the same interests.

    Mr. Zhang said: "And you are using one engine to drive the rotor and propeller. Is the transmission efficiency sufficient?"

    Lu Xuan smiled and said: "There is not much loss in efficiency, and if you use a turboprop or a turbofan, the weight will increase. My unmanned high-speed helicopter is not big to begin with. If two more engines are added,  , it may not be able to fly! And when flying at high speed, it flies like a gyroplane. The two rotors on it do not need power, they are only needed when taking off and landing vertically!"

    "I see, it's not exactly the same as the American X-2 high-speed helicopter. The Americans use composite power, with the rotor and propeller providing propulsion at the same time. But this guy you made is more like the AH-56 Xia that the Americans made back then.  Yan heavy-duty helicopter, but its maneuverability and hovering are much better than Cheyenne!" Mr. Luo said: "How much can this thing carry?"

    Lu Xuan smiled and said: "It only weighs two hundred kilograms when empty. It can also carry three hundred kilograms of cargo. If one hundred kilograms of fuel are added, it can travel three hundred kilometers and last more than half an hour. It can be used to help with transportation.  That¡¯s more than enough luggage!¡±

    The three old men took a breath without entering. They originally thought that this kind of drone was just a technology verification machine. If they wanted to make a practical version of them, they had to carry out an enlarged design, but they did not expect this kind of drone.  The performance of man-machine cannot be underestimated. Although the range of 300 kilometers is a bit short, it is enough for China. Moreover, with its powerful load-carrying capacity, a lot of equipment can be installed in it, such as radar and camera equipment.  The radar equipment used by the drone is only a few dozen kilograms, which means that it can not only detect but also carry more than 100 kilograms of weapons. The speed is more than 470 kilometers per hour, which is faster than most helicopters today.  quick.

    Compared with the other two old men, Xu Languo is a little younger and shorter, but he looks stronger. If you don't look at his gray hair and just look at the tendons, he looks like a man in his forties or fifties.  , say?: "Hey, Brother Lu, since you came up with this thing and gave it to Luo Deliang as a gift, you shouldn't keep the technology secret. Can you show us those test documents?"

    Lu Xuan couldn't help but smile bitterly, where did the test data and documents for this thing come from?  But since they asked, Lu Xuan certainly didn't have to keep it a secret. Although these things were advanced enough, these concepts had already been proposed, and even verification machines had been built, so Lu Xuan was not afraid of throwing these things out.

    "Of course we have this, it's at my assistant's place, if grandpa wants it"

    Although Lu Xuan does not have this kind of data in his hand, this type of high-speed helicopter has conducted thousands of flight tests in the World Matrix, and the data is already extremely complete. Of course, Lu Xuan cannot hand over all this data.  , just selected the typical data of hundreds of times, so that they not only get what they need, but also understand Lu Xuan's painstaking efforts, and it is not too exaggerated.

    Mr. Luo became anxious upon hearing this and said, "Xu Languo, this is a gift from my grandson-in-law. Why are you joining in the fun?"

    Xu Languo chuckled and said: "Luo Deliang, you have retired, there is no use keeping that thing, you might as well contribute it to our research bureau!"

    As soon as they said these words, the door was suddenly knocked open, and a group of soldiers with live ammunition suddenly rushed in. Pangu immediately stood in front of Lu Xuan. After looking around, he saw that the drone was like a formidable enemy.  , the guns were pointed at the unmanned helicopter and Pangu.

    Most of the people in their guard company are soldiers who have been selected from the special forces. Many of them still have the desire to join the special forces. They have an instinctive sense of danger. In this room, except for their target - that  Among the drones, the most threatening one is of course Pangu.

    Seeing these people pointing at Pangu and Lu Xuan, the three old men couldn't help but said angrily: "What are you doing?"

    "Report, the guard company commander Bi Xueyin reported to the three leaders that we developed a drone of unknown origin that rushed into this place, so come in to check!"

    Luo Deliang said: "There is no need to check, that is a gift from my grandson-in-law. Do you still want to arrest us and confiscate the drone?"

    "Of course of course it's not necessary, we are just for the safety of the chief here!" Bi Xueyin muttered in his heart, actually giving a drone as a gift. This grandson-in-law is really very creative. If a drone with this performance is placed  Internationally, it costs millions of dollars, which is more expensive than many luxury cars.

    At this time, a middle-aged man wearing a military uniform and carrying a major general's epaulettes pushed in the door. Although this man was over forty, his figure was very standard, and there was no sign of losing weight. He gave the impression that he was very energetic.  , he first asked about what was going on here, and then said: "Okay, Lao Bi, there's nothing going on here, why don't you go out and sit down first? Eat and drink well, don't say I've treated you badly here!"

    After this person took care of things, Luo Dongping looked at Lu Xuan and said with a smile: "You are Xiao Lu, right? Although this is the first time we meet, I am busy with things outside and have left you out a bit, so don't mind!  "

    Lu Xuan smiled and said: "No, no, if uncle has something to do, just go and do it!"

    Luo Dongping had a good impression of Lu Xuan. Although it was the first time they met, he was a little reserved. This kind of restraint was not because of his own power, but because of the common sense of a son-in-law meeting his father-in-law. I heard that this boy was because of  He took out a plasma generator and mobilized people from the National Security Bureau, which shows that this kid is really good at it.

    "Dad! There's a banquet outside, why don't you go out to socialize?" Luo Dongping turned to Luo Deliang and said.

    Luo Deliang said impatiently: "Why should I go? Your mother has already cooked the food here. Later I will join your mother, Mingzhu, Mingwei, Manzhu, Xiaolu and my old buddies here. This is what we call home.  Banquet, among those old comrades outside except you, how many of them sincerely came to wish me a birthday?"

    The Luo family is indeed a big family, with three generations living under one roof. This kind of family atmosphere gives Lu Xuan a strange yet familiar feeling. Luo Mingzhu's mother and grandmother kept staring at Lu Xuan at the dinner table. It is said that the mother-in-law likes her son-in-law more and more.  , but this made Lu Xuan feel a lot of pressure.

    "Xiao Lu, we are all our own people. Since you and Mingzhu have established a relationship, we also need to know something about you. I wonder how your family is, Xiao Lu? What is your attitude towards your relationship?" Xu  Manzhu said with a smile.

    "I I have had no parents since I was a child. I heard from my adoptive grandfather, Grandpa Du, that my parents used to be border anti-narcotics policemen in Baoshan, Yunnan Province. Because my mother made a wish before she died and did not want me to live on the border, so my father  Those comrades helped me move my household registration to Shanghai"

    Luo Deliang said: "It turns out they are the children of martyrs."Now that we are safe at the border, who knows how many good men are buried there, Lu Xuan, drink with us, even if it¡¯s for your parents"

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