Chapter 247: F-8 facelift

　　 Yuan Zhen valued Wang Bu'an very much.
　　 Wang Bu'an is not too cold to him. Even a little disapproving.
　　 Why?
　　 Overkill!
　　 Yuan Zhen's position seems to be misplaced.
　　Wang Bu'an actually knows who Yuan Zhen is. He is a very famous aircraft designer in China. Outstanding meritorious service.
　　 There are many excellent works under Yuan Zhen's name.
　　 However, Jian Ba ​​is not Yuan Zhen's work.
　　Even, he has no contact with Jian Ba ​​at all. Eight poles can't be hit.
　　 The original prototype of the J-8 was a very old MiG-21 fighter. That was a work from the 1960s. It's almost sixty years since today.
　　 But, don’t underestimate the MiG-21 fighter.
　　 It is a fine product in the second-generation aircraft. It has good maneuverability and fast speed. It has been walking in the world for 60 years, has produced tens of thousands, and has outstanding combat achievements.
　　The shortcomings are that the amount of fuel is too small, the range is short, the nose is air-intake, and the equipment compartment is too large for large radars.
　　 Until today, there are still many countries’ main air force is the original MiG-21.
　　 is basically the same generation as the MiG-21 and is the 104 fighter jet of the U.S.
　　 At that time, my country’s aircraft designers faced two options.
　　Is it an imitation MiG 21?
　　 or imitating 104?
　　 Or do you choose neither? Or choose both?
　　 In the end, a hundred schools of thought contended, a hundred flowers blossomed, and many wonderful designs appeared. Among them, there is a series called Dongfeng fighter.
　　 You read that right, it is a Dongfeng fighter.
　　 is not the Dongfeng Intercontinental Express that everyone is familiar with now.
　　 The Dongfeng 113 fighter jet that has died, but its appearance is very beautiful. What 20 is completely incomparable. It's a pity that he died.
　　 After taking many, many, many detours, Baye finally came out.
　　 Because of its slender and streamlined body, its nickname is very special:
　　 Beautiful man in the sky.
　　 Cai Guoqing in the air.
　　 It is estimated that my rabbit's feelings for Ba Ye are too deep. The imported Su-27s have retired. At present, some Ba Ye continues to be active in the sea and air.
　　 The first-generation J-8 had no all-weather combat capability. It can only fly during the day.
　　 The second-generation J-8 has increased all-weather combat capabilities.
　　 The third-generation J-8, which increases fighting ability.
　　Since the J-8 is a relatively backward fighter, it has not been changed since then.
　　 The current world-famous aerial star is 20, 15 and so on.
　　 This time, Yuan Zhen temporarily transformed it.
　　The main goal is actually to test the performance of the 125 jet engine. Do verification for other fighters.
　　 As a fighter, the J-8 has entered the elimination list.
　　 However, even so, the J-8 test aircraft needs to consider all aspects.
　　 How to change the model in order to dig out all the performance of 125?
　　 20 that emphasizes stealth performance is definitely not needed. The 125 jet engine did not consider the need for stealth at all.
　　 Wang Bu'an didn't think about that much. I just hope to add thrust to the pile.
　　 Facts have proved that the thrust is indeed up. But the stealth performance is worrying.
　　 However, stealth performance is not necessary.
　　 After all, in many areas, thrust is more important than stealth performance.
　　 For example, in the field of transport aircraft.
　　 For example, a heavy fighter.
　　 Meidi 15 heavy fighter does not have stealth performance! The same is the king and hegemony, and the MiG 29 is beaten unnecessarily.
The original design concept of 　　125 is to support the transport aircraft.
　　 If you need supporting stealth fighter. That must be redesigned. Perhaps this is the main task of the 220 Institute?
　　 Otherwise, how could the country pay you 18,848 ocean wages every month?
　　 Do you think the country’s funding comes from the wind?
　　 fell into a trap
　　 What a big trap
　　 "Wang Buyan, are you nervous?" Liu Zhenhua said with a smile.
　　 "Not nervous." Wang Bu'an shook his head.
　　 "Why?"
　　 "What's so nervous about this?"
　　 "125 goes to heaven for the first time, don't you worry about what will happen?"
　　 "Absolutely not."
　　 Wang Buan said confidently.
　　 There is a problem?
how is this possible?
　　 This is not from the 7404 factory.
　　 It is produced by robot elves from beginning to end. 100% original Cybertron technology.
　　 Others are 9999-level technology, will something go wrong?
definitely will.
　　 But absolutely not including the earth.
　　 "General Manager Wang, please check the engine installation first to see if there are any problems." Yuan Zhen said solemnly.
　　 "Okay." Wang Bu'an nodded. Han Xuewei and Xia Nan were also called over.
　　 Yuan Zhen handed him a thick reference manual.
　　 The connection data of the engine and the airframe are detailed in the manual.
　　 The combination of engine and fighter itself is also a very advanced knowledge. It is a very advanced skill in fighter design.
　　 When it comes to the launch of fighter jet engines, there are definitely a variety of different types.
　　Some are hidden in the belly of the plane.
　　Some are suspended under the wings.
　　Some are installed on the nose.
　　Some are installed at the rear of the aircraft.
　　Some engines are very large, occupying almost one-third of the fuselage. For example, MiG 25 and so on.
　　Different engine layouts will affect the performance of different fighters.
　　 The number of engines also has a great influence.
　　 is not only a problem of thrust, but also a problem of safety and balance.
　　 The vast majority of fighter jets are arranged with dual engines. On the one hand, more thrust can be obtained. One aspect is for safety.
　　 Double-engine fighters, even if one is damaged, the other can still function.
　　 If it is a single-engine fighter, if it is damaged, it will be a tragedy.
　　Jixiang are all dual-engine configurations.
　　 This time the change has not changed. It is still equipped with dual-engine.
　　 Wang Bu'an began to check carefully.
　　 is not as simple as taking a look.
　　Every component needs careful inspection.
　　 You know, this is not a ground test, nor a high-altitude test. It is really going to fly to the sky.
　　 Jianba itself is not expensive.
　　 But the life of a test pilot is very precious.
　　 If there is an accident and the plane falls, the economic loss is a small matter. If the test pilot had an accident, that was the big deal.
　　Any test pilot is a treasure among treasures.
　　 Moreover, if there is an accident, it is equivalent to announcing the death penalty of 125.
　　 Still want to try a second time?
　　 dreaming!
　　 Others will never give you a chance.
　　 There are too many engines to go to heaven. you failed. Others will replace them immediately.
　　 Wang Bu'an reached out and stroked the fighter.
　　 Robot Elf No. 1 immediately penetrated into every corner of the fuselage, carefully inspecting it.
　　 not only check the installation of the engine, but also check other parts of the fighter plane.
　　 There are a total of five test machines this time.
　　 Among them, the appearance of the two frames is made of aluminum skin. The exterior of the three racks is made of stainless steel.
　　 What is the difference between aluminum skin and stainless steel?
　　The quality of the former is very light.
　　The quality of the latter is very heavy.
　　The fighter plane made of aluminum skin only weighs about 12 tons.
　　The fighter plane made of stainless steel weighs more than 18 tons. The difference between the two is almost 50 in weight.
　　 The former is a light fighter, flexible in action and good at fighting.
　　The latter is a medium-sized fighter.
　　 Why use stainless steel to make the appearance of the aircraft?
　　 must be to exceed 25 times the speed of sound.
　　 It is based on double three.
　　 Flying at Mach 3.
　　 Flying altitude is 30,000 meters.
　　 Compared with the J-8 prototype, these five fighters have major changes.
　　 The main change is of course the cancellation of the fuel tank.
　　 Since 125 does not need aviation kerosene at all, there is naturally no need to maintain fuel tanks.
　　 This also greatly reduces the takeoff weight of the J-8.
　　 Because of the elimination of the fuel tank, the counterweight is much simpler.
　　 For any fighter, the counterweight of the fuel tank is a very advanced knowledge.
　　 You need to know that aviation kerosene is liquid and will flow. Fighters make different attitudes, and the position of aviation kerosene is also different.
　　If the shape of the fuel tank is not handled properly, it will seriously affect the maneuverability.
　　 However, none of this can be seen on the test machine.
　　 What can I do with the free space?
　　 is of course used to hang weapons.
　　Under normal circumstances, the J-8 will carry at least three tons of aviation kerosene to take off.
　　 In other words, after the fuel tank is eliminated, the J-8 test plane can carry at least three-ton bombs.
　　From this perspective, it is also possible to temporarily act as a bomber.
　　 Three-ton bombs can destroy many targets.
　　 Ba Ye’s biggest weakness at the time was that the thrust was too great to hang more weapons.
　　 There is no problem now, there is no problem with hanging it as a Christmas tree.
　　 It takes a full hour for the inspection to complete the inspection on Unit 1.
　　 Wang Bu'an did not make any changes.
　　 This is absolutely not allowed.
　　 If he has been remodeled now, upgraded, and obtained good flight test data. But something happened later, what should I do?
　　 Generally speaking, there are no major obstacles.
　　 sign.
　　Confirm.
　　 Repeated signature confirmation.
　　 This means that if something happens, you are responsible as a designer.
　　 Wang Bu'an is not only a designer ~EbookFREE.me~, but also a researcher and producer.
　　 In other words, all responsibilities must be shouldered.
　　 Of course, Yuan Zhen can't run either.
　　 It depends on the accident identification conclusion, who is ultimately responsible.
　　 Not excited.
　　 Not bloody.
　　 feels like a routine.
　　 There is no excitement soaring at all. It feels like a trivial matter!
　　 "Master Wang. This is for you."
　　" Mr. Wang. This is for you.
　　 Xia Nan brought back a lot of test flight data. Among them are the various project arrangements for the flight test. Everything has to follow the procedure.
　　 You can't fly if you want to fly.
　　 is not just how you want to fly.
　　 must be based on a predetermined route, altitude, and speed. Any errors are not allowed.
　　 Han Xuewei also brought back a lot of observation equipment. Including telescopes or something.
　　 Test flight is a long process. It takes a long time.
　　 However, the most important thing is the first few days.
　　 If there is a problem, it will be revealed in the first few days.
　　 "Wang Buyan, are you confident?" Liu Zhenhua asked.
　　 "Yes!" Wang Bu'an replied loudly.
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