Chapter 249: Mach 3

　　 A good night's sleep.
　　 Get up in the morning, heaven is beautiful.
　　 The sky is clear and cloudless, the visibility is very good, it is most suitable for test flight.
　　 Inspect all test prototypes again.
no problem.
　　 After the inspection, the flight test officially entered.
　　The test pilots are all ready.
　　 The first player to play is Li Tonghe himself.
　　According to the flight test procedure, he will take off in the first plane. The first goal is to hit the Mach 3 high speed.
　　 "Good luck!"
　　 "Good luck!"
　　 Li Tonghe set off.
　　 He entered the cockpit of the first plane.
　　 The cockpit closed slowly.
　　 Everyone is scattered.
　　 Engine ignition.
　　 glide.
　　 Unit 1 drove out slowly from the hangar.
　　 arrived at the designated location.
　　The runway for the test flight is very long, which is longer than the runway of a general international civil airport. A full eight kilometers.
　　 This is also to prevent accidents.
　　 After all, the test flight itself is full of danger.
　　 "Let's go to the tower."
"it is good."
　　 A group of people enter the tower.
　　 There is a complete control room here, which can read various data of the first machine.
　　 At present, the speed of the 125 jet engine is less than 300 revolutions per minute. It is completely in a state of sliding.
　　 "Report! The power system is normal!"
　　 "Report! The avionics system is normal!"
　　 "Report! The emergency system is normal!"
　　 "You can take off."
"take off."
"take off."
"take off!"
　　 A series of instructions were issued.
　　 The engine speed rose sharply.
　　500 rpm
　　1000 rpm
　　The tail of the fighter jet suddenly spewed out a large group of tail flames.
　　 speed up.
　　 The speed is getting faster and faster.
　　 The engine speed soon exceeded 1500 rpm.
　　 The wings are slightly upturned.
　　 Pull up.
　　 The landing gear began to lift off the ground.
　　The fighter jet seemed to be a sharp arrow, which quickly penetrated into the sky.
　　 Mach 08
　　 Mach 10
　　 Mach 12
　　 The speed reading keeps rising.
　　 Almost within a few seconds, Unit One had already exceeded 1 times the speed of sound.
　　 At this time, the engine speed was less than 2000 rpm.
　　 The speed continues to increase.
　　 Mach 15
　　 Mach 18
　　 "Stable speed."
　　 "Keep your height."
　　 The tower issued an order.
　　 Unit 1 started to control the speed.
　　 is mainly to give the engine a respite.
　　 After all, this is the first time the engine has reached such a speed and the first time it has reached such a height.
　　 Some problems that could not be found in ground tests, high-altitude test benches, and factory test flights are likely to be exposed at this time.
　　The data is normal.
　　 The flight attitude is normal.
　　 The engine operating parameters are normal.
　　 Soon after, Unit One began to continue to rise again.
　　 The current height is only a mere eight kilometers. It is still at the height of use of civil aviation aircraft.
　　 continues to rise.
　　 Continue to speed up.
　　 Mach 20
　　 height 10,000 meters
　　 Mach 22
　　 Altitude 12,000 meters
　　 "Stable speed."
　　 "Raise the height to 15,000 meters."
　　 The tower issued the command again.
　　The fighter plane began to stabilize its speed, and then continued to climb.
　　 Soon, it jumped to a height of 15,000 meters.
　　 "It's too fast," Yuan Zhen said.
　　 "The thrust is too much." Zheng Jincheng nodded.
　　 It takes some time for a normal fighter to jump from 12,000 meters to 15,000 meters.
　　 For most jet engines, after jumping to an altitude of 12,000 meters, there will be a slight limit. It is as if a small-displacement car reaches a speed of 120 kilometers per hour, the acceleration will appear weak. It may take a long time to increase the speed to 150 kilometers per hour.
　　 However, the speed increase of Unit 1 is completely unaffected.
　　This fully shows that there is still a lot of reserve space for the 125 thrust.
　　 However, the main thing to test now is speed.
　　 Height does not need to be considered for the time being.
　　Fly flat.
　　 speed up.
　　 The speed of Unit One is getting faster and faster.
　　 Fortunately, it is invisible to the naked eye. Otherwise, I am afraid that only a streamer flashed by.
　　 "Li Tonghe, how do you feel?" Zheng Jincheng asked.
　　 "Very good." Li Tonghe's answer was clear.
　　 "Field of view?"
　　 "Normal."
　　 "Listening?"
　　 "Normal."
　　 "Meter?"
　　 "Normal."
　　 "Engine noise."
　　 "Normal."
　　 Some subjective judgments cannot be measured by data.
　　 For example, engine vibration, noise, asthma, etc., all require test pilots to judge.
　　 In addition, there are flying attitudes, flying feelings, and so on.
　　 How about the test pilots are the treasures of the treasures.
　　A test pilot is worth more than a hundred fighter jets.
　　 is simply a feeling of flying, it takes at least a few hundred hours of flying to develop.
　　 Like Li Tonghe, the flight time has exceeded 1,300 hours, and the experience can be said to be very rich.
　　 Frankly speaking, he can basically tell if there is a problem with the plane.
　　 Especially the engine problem is very obvious.
　　 As the saying goes, the engine is nothing small.
　　 The engine is the heart!
　　 Anything related to the engine is a big deal.
　　 The first thing the test pilot must judge is the engine problem.
　　As far as the current state is concerned, the engine is operating normally.
　　 No, it can also be said to be abnormal.
　　 The main reason is that the speed is too low.
　　 Afterburner has not turned on at all.
　　 is like a 60 car engine, the speed is only 60 kilometers per hour.
　　 I am totally wronged by such a powerful engine.
　　 "Good. Speed ​​up."
　　 "Understand. Speed ​​up."
　　 Unit 1 continues to accelerate. The engine speed began to increase slowly.
　　 This is limited by the avionics system.
　　 is mainly to prevent overload.
　　 Mach 24
　　 Mach 25
　　 "Stable speed."
　　 "Stable height."
　　 The tower issued an order.
　　 Of course, Li Tonghe strictly enforced the order.
　　 This is a thermal barrier speed.
　　The fighter jet violently rubs against the air, generating heat.
　　Over this speed, the temperature of the aircraft's exterior will increase rapidly.
　　 Sure enough, the temperature detected by the sensor, the stainless steel skin on both sides of the nose, is almost 180 degrees.
　　 This is the temperature at the beginning.
　　If you continue to fly, the temperature will continue to rise.
　　 Sure enough, after half an hour, the temperature at the main observation point was already above 220 degrees.
　　 Obviously, this is a dangerous temperature.
　　 If it is aluminum skin, it may become soft.
　　 Fortunately, it is made of stainless steel.
　　 Finally, the temperature of the skin on both sides of the head of the No. 1 machine stabilized at about 230 degrees.
　　 Generally speaking, the weakening temperature of stainless steel is above 800 degrees.
　　 In other words, there is still a lot of room for speed-up.
　　 In fact, a lot of data of MiG 25 can be used for reference.
　　Mig 25 can break through 32 Mach.
　　 "Continue to speed up."
　　 "Keep your height."
　　 The tower issued another command.
　　 Unit 1 continues to increase speed.
　　 Mach 26
　　 Mach 28
　　 Mach 30
　　 finally broke through Mach 3.
　　 The flight speed of the first plane finally broke through Mach 3.
　　 No, to be precise
　　 broke through Mach 3 easily.
　　 Li Tonghe feels completely effortless.
　　 The engine did not exhaust its full power. The speed exceeds Mach 3.
　　 If it weren't for strict disciplinary restrictions, he couldn't wait to try it out. If it was to push the engine "throttle" to the end, how much speed would he have?
　　 Could it fly so fast that it disintegrated directly in the air?
　　 The atmosphere inside the tower is very calm.
　　 Everyone is back to normal after a brief excitement.
　　 This is China’s own research and development, the first aircraft capable of breaking through Mach 3. It set a record.
　　 All machines will record this precious data.
　　 Since then, China has become the third country in the world to have a Mach 3 fighter jet.
　　 On the large LCD screen, a big three-character was shattered.
　　 Wang Bu'an was watching.
　　 It feels like there is no passion at all. It feels like a small matter.
　　 Mainly because the engine has a lot of spare power.
　　 Basically, half of the power hasn't exploded yet.
　　 Others seem to be not surprised at all.
　　 This is something that has long been expected.
　　 The thrust of the 125 is so large, it is double-engined, and the weight of the first machine is only 18 tons. It is normal to break through Mach 3!
　　The question now is, what is the limit speed?
　　 Mach 4?
　　 Mach 5?
　　 even higher?
　　Theoretical calculations may be very high. But everything needs to be tested by practice.
　　 "Report! Satellite orbit is normal!"
　　 "Report! The US 1080 satellite is in orbit!"
　　 "Report! Russian 271 satellite is in orbit!"
　　 There is constant information aggregation.
　　 Liu Zhenhua frowned inadvertently.
　　 It seems that secrecy work cannot be done. The test flight of the first plane will definitely be detected by other countries.
　　 Jian Ba ​​does not have the ability to be invisible.
　　 125 engine also has no stealth ability.
　　 In front of other people's high-tech satellites, they are completely naked kids.
　　 But, it doesn’t matter anymore.
　　 Detect as soon as it is detected. This is also expected.
　　Everything is ready. The information is true or false, false and true, in short, it is just to make others suspicious.
　　 Now, it’s time to show off China’s muscles.
After 　　, the ultimate airspeed of Mach 3, UU reading www.uukanshu.com is not only owned by the United States and Russia.
　　 We also have it in China!
　　 We have many more!
　　 Sure enough, the detection satellites of various major countries are sending back information quickly.
　　 First of all, the Pacific Command of the U.S. Navy in Hawaii
　　 Then the US Central Command in Qatar
　　 Then the Russian Air Force
　　 Numerous large radars have been turned on.
　　Countless satellites began to adjust their orbits.
　　 For a time, countless data came in, causing countless undercurrents.
　　 "Is China launching missiles?"
　　 "What are they going to do? Missile test? Intercontinental missile?"
　　 "Damn it! Is China using missiles to cover that island? So fast!"
　　 "Damn it! We have a Seawolf-class submarine in the Philippine Sea!"
　　 "No! The target height has not changed!"
　　 "Damn it! This is a fighter!"
　　 "Damn it! This is a Mach 3 fighter!"
　　 "Damn it! This is a Huaxia fighter! Its cruising speed is at Mach 3!"
　　 "Hurry up and notify the Secretary of Defense!"
　　 "Get him up!"
　　 Update 17,000 words today, ask for a recommendation! Thank you!