Chapter 310: Joint research and development

　　 Wang Bu'an entered the flying tower.
　　 Liu Zhenhua nodded towards him. But did not speak.
　　 Wang Bu'an also nodded silently.
　　 Cheng Kailong gestured quietly not far away, beckoning him not to speak.
　　 Obviously, Liu Zhenhua and Cheng Kailong meant to deal with it coldly. It is estimated to downplay his identity. So as not to be targeted by someone who is interested.
　　 This is a good thing. Of course, Wang Buyan actively cooperated.
　　 The less his identity, the better. It is best to have no contact with military industry.
　　 220 Institute itself is a cover. On top of him, the names of several "big men" appeared in a real sense. They are the "real" leaders of the 220 Institute.
　　 If you don't know the details, you will definitely go to these fictitious names. Who cares about his Wang Bu'an?
　　 Mach 15
　　 Mach 20
　　 Mach 25
　　 Mach 30
　　 The unloaded Bull Demon Transporter was extremely fast and easily broke through Mach 3.
　　 Its height also quickly exceeded 30,000 meters.
　　 The double three that was very difficult to break through in the past has become a piece of cake these days. Any plane can easily make a breakthrough.
　　 Ma Yuhe’s feedback is very good. No feeling abnormal.
　　The readings of various meters are also normal.
　　 The stone backbone is finally relieved.
　　 Two hours later, the Bull Demon King returned home as instructed and landed smoothly.
　　 Wang Bu'an focused on checking the landing gear.
　　 This second-hand landing gear is too big to match.
　　 Fortunately, its performance is still very strong. For the time being, it can help the Bull Demon King toss for dozens of hours. However, after dozens of hours, the situation became critical.
　　 Stone Core also worried about this landing gear. But he couldn't find a better substitute.
　　Want to produce by yourself? Sorry, there is no relevant technology at all.
　　 "How much is this?" Wang Bu'an asked.
　　 "More than ten million." Shi Zhongjian said painfully.
　　 "One set? Three sets?"
　　 "A set."
　　""
　　 Wang Bu'an was speechless.
　　 What a great landing gear. One set costs more than ten million.
With three sets of 　　, it would cost more than 30 million. No wonder the price of the Boeing 747 is so expensive. Dare to start every component!
　　 A brand-new Boeing 7478 passenger plane, the price starts at about 300 million US dollars. It is equivalent to about RMB 2 billion.
　　 I would like to say that the most valuable part of an airplane, except for the engine, is probably the landing gear.
　　 For transport aircraft, the landing gear is also very critical.
　　 This problem must be solved.
　　 Otherwise, the bull devil can only stay on paper.
　　If you want mass production, it is impossible to continue using the used Boeing 747 landing gear.
　　 Obviously, Shi Zhongjian has no technology to solve the landing gear problem for the time being. Only Wang Bu'an can.
　　 Inadvertently, Wang Buyan’s road map has another episode: the landing gear of a super heavy aircraft. It must be resolved in the near future.
　　 No-load test flight was successful.
　　 Next, there is a half-load test flight.
　　 A large number of sliding fire boxes were moved into the cabin. Each fire box is about 1 cubic meter. The weight is about 100 kg.
　　The stacked wooden boxes are evenly distributed in each position of the cargo hold. The weight is about 80 tons.
　　 In this way, the takeoff weight of the Bull Demon King has reached more than 160 tons.
　　 Ishizhong couldn't help feeling a little nervous.
　　 This is the real load takeoff.
　　 The load of 80 tons already exceeds the Il-76 transport aircraft.
　　 As long as the 80-ton half-load test flight is successful, it means that the Bull Demon has the possibility to replace the Il-76. At least it is competitive.
The selling price of 　　 Yier 76 is also very expensive. Start with at least $200 million. There was news that the two polar bears sold to a large country in South Asia were modified with the Il-76.
The modified early warning aircraft received a full 1.1 billion US dollars. If converted into RMB, it would be 7 billion. Enough to produce more than 20 Bull Demon King transport aircraft.
　　 If it is modified by Wang Bu'an, it can even produce more than 30 aircraft.
　　 Obviously, there is a gap, the difference between heaven and earth.
　　 No wonder that even if the Bull Demon is pieced together, the test flight will be approved.
　　 Obviously, the superiors do not want to be held back by Il 76, and do not want to continue to be a water fish. The field of large transport aircraft must be self-reliant.
　　 This time the test pilot is Kong Lingwei.
　　He is also a veteran test pilot.
　　According to his statement, he has been flying for 100 hours this month.
　　 Before, each test pilot's flying time per month may be less than ten hours. This month it has increased by more than 10 times!
　　The favorite thing of test pilots, of course, is that there was no mechanical failure during the test flight.
　　 There is no danger in this way. There is no need to analyze a large number of reports after going to the ground.
start up.
take off.
　　 All four engines broke out.
　　 The Bull Demon King took off easily.
　　 The takeoff distance is only 250 meters and less than 250 meters. It shows that the power is still too strong.
　　 For the pilot, the overload will be very large. At least 8 or more. If it is not well controlled, the test pilot is likely to have black or red vision.
　　 Fortunately, Kong Lingwei's operation is quite appropriate. His body did not feel unwell.
　　 Two hours of flight without any problems.
　　 The Bull Demon King transport aircraft with a payload of 80 tons made several relatively fierce movements in the air. No abnormalities were found.
After 　　 landed, Kong Lingwei had only one test flight opinion:
　　 Properly extend the take-off distance.
　　 It is recommended to extend the take-off distance to more than 350 meters. It is better to exceed 400 meters.
　　 The power of the four engines is really surging.
　　 He felt that only two engines were enough. With four engines, it is easy to cause overload.
　　 Experienced test pilots may be fine. However, ordinary pilots may have misoperations. There is a chance to adjust if there is black or red vision. The most feared is being unconscious on the spot.
　　 The stone backbone is relieved again.
　　 followed by a full-load test flight.
　　 The empty weight is 80 tons, and the maximum take-off weight is 260 tons. The load is close to 180 tons.
　　 Kong Lingwei is still in charge of the test flight.
　　 A large number of fireproof boxes are loaded on the transport plane.
　　 At this time, the appearance of the ugly pot belly finally came into play.
　　 The super huge belly ensures enough room for accommodation.
　　 A full 1,800 fireproof boxes were successfully stuffed in.
　　 It is estimated that an ordinary helicopter can also be stuffed in.
　　 Tank or something, don’t worry at all.
　　 If the location is properly arranged, two super heavy tanks can be transported.
　　 But the design of the stone backbone is obviously conservative. The cabin fixing device he designed can only fix one tank. There is no way to fix the other one.
　　 Obviously, this shortcoming must be improved after the test flight is over. Fortunately, the problem is not big.
　　 only need to redesign the fixed buckle on the floor.
　　 However, the technical content of these buckles is also very high. It is required that each buckle can bear a weight of more than 15 tons.
The design of 　　 stone backbone is directly welded, and the ground is too convex and uneven.
　　For large objects, it may not be a problem.
　　 But for some precision machines, obvious bumps can cause imbalance.
　　 Of course, these are minor problems. It can be improved later.
start up.
take off.
　　 The power is more than enough.
　　 flew easily.
　　 With a load of 180 tons, he flew easily.
　　 According to the test flight requirements, the flight is high
The speed is maintained at 15,000 meters, and the flying speed is not allowed to exceed Mach 2.
　　 Obviously, this is absolutely no problem for the Bull Demon King.
　　 Two hours later, it landed smoothly.
　　 But the flight test procedure has not yet ended.
　　 It is estimated that at least 150 hours of further test flight will be required before the final test flight report can be obtained.
　　 However, from the current three test flights, the performance is very good.
　　 If there are no accidents, the follow-up test flight is just to further improve the test flight data. It's routine.
　　 "Chief Worker Wang, I have a request."
　　 "What request?"
　　 "Please put the design of the Bull Demon King in the name of your 220 Institute."
　　 "Why?"
　　 "We joint research and development."
"you sure?"
　　 "OK."
　　 Yes, it is joint research and development.
　　220 developed the engine. 217 Institute is responsible for the airframe. In all reports, the names of the two institutes are written.
may I handle it in this way?
of course can.
　　 Law without prohibition is feasible.
　　Who told other institutes not to hurry up? Who told the 217 Institute to move fast?
　　Who said 217 Institute needs the endorsement of 220 Institute?
　　Before submitting the joint research report formally, Wang Bu'an reviewed the Bull Demon again. Summarized its advantages and disadvantages.
　　 After all, this is a transport plane that requires his endorsement, so he must be cautious.
　　The advantages of the cow devil are many.
　　 First of all, the cost is very cheap. Only more than 200 million yuan.
　　Secondly, the manufacturing process is very simple. The processing difficulty of parts is low. General aircraft manufacturing plants can do it. Some parts can be completed by ordinary machinery factories.
　　 Again, maintenance is very simple. They are all welded structures and almost no maintenance is required.
　　 After all, what Shi Zhongjian uses is completely the level of a junior trainer, which is the most basic. It is impossible for the ground crew to encounter any difficulty. Even the pilot himself can temporarily act as ground support.
　　 There are a few characteristics~EbookFREE.me~ Air Force Rabbit is impossible to look down upon. Replacing Il 76 is no problem.
　　According to the design of the 217 Institute, the load capacity of the Bull Devil is actually the smallest, with only 160 tons actually overloaded to reach 180 tons.
　　 There are also models with a larger load capacity.
　　 Above the Bull Demon King, there is Zhu Bajie. The load capacity is 250 tons.
　　 Above the Pig Bajie, is Maitreya Buddha. The deadweight is 500 tons.
　　 There are bigger ones. Code-named Kunpeng, it is 1,200 tons.
　　 The stone backbone is a typical example of how bold people are and how productive they are. Once the Bull Demon is successful, subsequent models will come one after another.
　　 The biggest limitation is actually the landing gear.
　　The landing gear needs to support a weight of 250 tons, which he can't do.
　　 Therefore, Zhu Bajie has no prototype for the time being.
　　 Up to now, more than 200 units of 125 engines have been produced. Most of them are used in test sites. There is no official listing yet.
　　 is probably such an excellent engine, so I don’t want to use it on the J-8.
　　 In the hands of the stone backbone, there are four in total.
　　 Now all four stations are used up.
　　What about other prototypes?
　　 He can only turn to Wang Bu'an for help.
　　5