Chapter 1637 System level, LV5!
The tower fell into silence again, and even the breathing became cautious.
Fu Guoxiang was highly concentrated, with his hands slightly suspended above the control lever, as if he was ready to intervene at any time.
Chang Haonan, Xing Muchun, Bian Lizhen...
Everyone's eyes were fixed on the real-time curves of key parameters such as attitude angle, overload, and rudder surface angle, waiting for the arrival of that critical moment.
However, the actual situation was beyond everyone's expectations.
The speed curve on the screen seemed to be smoothly smoothed by an invisible hand, showing only extremely slight fluctuations that were completely within the expected range.
The fuselage of "Zou Yu", under the joint protection of the sophisticated flight control system and the aerodynamic stabilization device, pierced the sound barrier with an almost elegant and stable posture.
The humidity in Northeast China is extremely low in winter, and there is almost no Mach cone visible to the naked eye.
Only at the moment of breaking through Mach 1 did the images transmitted back shake violently a few times, with a brief shock wave turbulence disturbance, but the amplitude was not even greater than the turbulence when taking off from the ground just now.
Then everything quickly returned to stability.
The whole process was so smooth that most people didn't have time to react.
It was not until the observer reported loudly with a hint of disbelief and excitement, "Speed 700 knots!" that the tense nerves in the tower suddenly relaxed.
"It has broken the speed of sound!"
After a moment of silence, applause broke out to celebrate the successful passing of this crucial level.
In fact, for "Zou Yu", the higher the speed, the less there is to worry about.
After breaking the sound barrier, the turbojet 14P engine truly entered its "comfort zone".
Without the sudden increase in transonic resistance, the surging thrust after special adjustment can be fully released.
The observer's voice became noticeably lighter as he counted:
"Section 800!"
"Section 900!"
"Section 1000!"
…The speed is like breaking free from shackles and sprinting towards a higher realm.
Soon, the speed reached a threshold just below Mach 1.8.
This is the minimum starting speed set for the Lingxiao-2 dual-mode ramjet engine.
Almost at the same moment when the observer reported "1200 knots!", the status indicator of the "LX-2" column in the main parameter display area instantly jumped from blank to flashing green - "Permitted to start"!
"Report! Speed 1200 knots! Meet the launch conditions for 'Lingxiao-2'!"
Fu Guoxiang's voice was full of determination as if he had completed a mission, and he immediately reported to Chang Haonan.
Chang Haonan gave the order in a deep voice without any hesitation:
"Switch to sub-combustion ramming mode!"
"Understood! Switch to sub-combustion ramming mode!"
While replying, the operation instructions are also issued by tapping.
The next second, the image from the rear camera of "Zou Yu" was suddenly swallowed up by an extremely dazzling light!
The flat fuselage ribs are located at the trailing edge of the waverider body. Two tail flames that are much thicker and more intense than those of the turbojet 14P, with a dazzling blue and white color, burst out!
The light was so strong that it instantly submerged all background details in the camera image except the flames themselves - the sky, clouds, and earth - in the dazzling halo and the subsequent darkness.
The entire tower seemed to be brightened by the light from the screen.
"Ramjet engine ignition successful!"
Fu Guoxiang's voice was filled with irrepressible excitement.
"Operating parameters are stable! Combustion chamber pressure is normal! Thrust output is stable!"
He stared at the screen, which was rapidly refreshing, jumping and climbing data streams, continuously reporting key indicators.
Just two seconds later, confirming that the ramjet engine was working completely stably, Fu Guoxiang issued another command:
"Shut down the turbojets!"
On the screen, the small area representing the tail nozzle of the turbojet 14P, which had originally had a continuous flame, quickly dimmed and shrank until it disappeared completely.
At the same time, the closable air inlet cover on the back of the "Zou Yu" aircraft, which supplies air to the turbojet engine, was also closed silently and tightly again, isolating the external airflow.
At this moment, "Zou Yu" has completely gotten rid of the constraints of jet power and has completely transformed into a pure waverider aircraft powered by two "Lingxiao-2" ramjet engines.
The sharp leading edge of the kissing cone cut through the thin air at high altitude, the fuselage slightly lifted up, and under the surging thrust of the ramjet engine, it began to climb and accelerate more rapidly!
At this point, the last bit of tension in Chang Haonan's heart completely relaxed.
He has absolute confidence in the excellent aerodynamic characteristics and stability of the waverider configuration at hypersonic speeds.
Countless wind tunnel tests, precise supercomputer simulations, and actual data from previous verification aircraft...
Compared with the transonic section and power conversion process, which are full of uncertainty, the risk of the subsequent hypersonic cruise is reduced to the lowest point.
On the console screen, the altitude and speed values soared like a wild horse, and Fu Guoxiang's hands completely left the control stick.
Even if an accident really happens next, it will be impossible to rely on human reaction speed for "emergency handling".
Just a few minutes later, "Zou Yu" had climbed to an altitude of 3.5 meters, and the speed pointer even broke through Mach 4.7!
The thin and cold stratospheric air was violently compressed and rubbed by the high-speed aircraft, and began to emit a faint halo.
Precision sensors keenly capture changes in the flight environment, and the engine control system operates autonomously.
On the screen, the status indicator of "LX-2" instantly switched from the stable "sub-combustion" state to "scramjet" representing the scramjet mode as everyone watched with bated breath.
The flow field in the combustion chamber is reconstructed in less than one second, transitioning from subsonic combustion to supersonic combustion mode.
The surging thrust once again pushed the black sword to penetrate the stratosphere in an even wilder manner, and the number in the speed column also broke through the Mach 5 mark.
On the screen, the infrared thermal image representing the surface of the aircraft began to show bright orange and yellow colors, representing extremely high temperatures, like flowing lava.
At the edge of the optical image transmitted back, the air on the surface of the aircraft, which was ionized due to intense aerodynamic heating, was also emitting a dreamy colorful coat.
That is the glow caused by the ionization of the air due to intense friction...
……
The emotions in the tower were finally released, and thunderous applause and cheers broke out!
Many people were so excited that they even hugged and high-fived each other.
Years of hard work and countless days and nights of dedication turned into the ecstasy of success at this moment!
This is a milestone moment in the aviation history of China and even mankind!
However, as the core creator of all this, what Chang Haonan felt at this moment was not the excitement he had expected.
He looked at the crowd in front of him, and his brain kept issuing instructions to "join in the celebration."
But the body seemed to be out of control.
An indescribable, almost ethereal calm, like the deep waters of a lake, flooded Chang Haonan's mind.
I don't know how long it took, maybe a second, or maybe a minute, the upgrade prompt that I haven't seen for a long time sounded:
[Research points: 793800
Theoretical level: LV5 (-)
Engineering experience: LV5 (-)
Management ability: LV5 (-)
Comprehensive ability: LV5
Projects in progress: 2
Projects that can be carried out: 5]
Obviously, at the moment when Lingxiao-2 switched to scramjet mode, it pushed "Zuoyu" to break through 5 times the speed of sound.
[Air-breathing hypersonic aircraft] This project was judged to be a success!
"This settlement is really timely..." Chang Haonan secretly complained in his heart, "If only the salary could be paid so quickly..."
Then, beneath the calm water surface, it seemed as if billions of stars lit up at the same time!
Countless inspirations, conjectures, formula fragments, physical pictures about fluid motion, whether clear or vague... like the Big Bang, suddenly and violently poured into his mind without any warning!
They are so disorganized that they seem likely to fall into the water and disappear at any moment.
Chang Haonan felt that his thinking had never been as sharp as it was now.
He put all his willpower into the surging storm of thoughts, trying to catch the fleeting inspiration and sort out the tangled revelation.
Finally, after a thorough analysis...
"Has it... come to this?"
The answer is at hand:
【NS equation】
