"Okay."

Zhou Hai let go of the joystick, wearing Type 07 pilot glasses, staring at the blue halo directly ahead, and looking forward to the upcoming supersonic flight in his heart.

Taking over the control, Yang Xiaolong checked the flight parameters through the on-board avionics, everything was normal, the remaining fuel was 76%, and he tightened the control stick and turned on the engine afterburner.

"Boom!" In an instant, the afterburner of the left and right engines was fed and ignited, and the engine scream became louder, like thunder, spreading throughout the sky.

The tail end erupts a sharp orange-red high-temperature tail flame, which is dazzling and eye-catching.

The 'Minshan' S-17 aviation turbofan engine can output up to 4,750 kg of terrifying thrust in the afterburner state, which is a proud data for a small thrust turbofan engine.

With only 76% of the Falcon fuel left and no external weapon load, the two Minshan engines burst out a total of 9,500 kg of thrust, all of which acted on the body, making the thrust-to-weight ratio of the whole aircraft exceed the threshold of 1.

Streams of high-quality aviation fuel flow through the oil pipeline, supplying two industrial flowers that have entered the state of afterburner swallowing, the flight parameters of the left display change wildly, and the airspeed gauge shows a geometric improvement.

Hasten!

Flying at an altitude of 12,000 meters and bathed in the sun, the L-15C Falcon shows the demeanor of the king of higher education aircraft.

1000 km/h!

1100 km/h!

1200 km/h!

At this time, the entire L-15C Falcon is already in the transonic stage, the fuselage is partially shocked, the air resistance increases sharply, the lift will be greatly reduced, and the fuselage seems to be stuck in a quagmire and difficult to move, which is a certain degree of turbulence.

Despite the wing-body fusion design of the fuselage, which has excellent flight performance and greatly reduces the influence of the mixed flow field formed by subsonic airflow and supersonic airflow on the surface of the fuselage, the transonic region is still the most dangerous area for supersonic flight.

It's a no-go zone to fly!

"Boom!" A few seconds later, a thunderous roar resounded through the sky and spread across the sky.

The L-15C Falcon, which was shrouded in a strong pressure wave in a half-load state, bloomed a cone-shaped white shock wave cloud on both wings and the middle of the fuselage, with a standard shape and a shocking heart.

Sonic boom clouds derived from the laws of physics!

Zhou Hai, who stayed in the cockpit, only felt a pressure acting on his body, and at the moment when the body broke through the sound barrier, the world fell into silence, leaving only the slightly rapid breathing of Yang Xiaolong in the helmet headset.

Be quiet!

True silence, as if the world is frozen, is a wonderful and unique feeling.

The sun hanging in the distance of the sky releases light and heat, and the L-15C Falcon, which has entered the state of supersonic flight, theoretically only needs to maintain due west and fly at Mach 2 to exceed the earth's angular rotational speed, just like the praise father in the mythical world, chasing the sun.

"Zhou Hai, how do you feel?" At this time, Yang Xiaolong's somewhat hurried voice sounded in the military encrypted communication channel.

Hearing Yang Xiaolong's question, Zhou Hai responded gently, giving his inner feelings, and did not hesitate to comment on himself: "Very good, the world of supersonic flight is very quiet, peaceful, and a little passionate, and the flying experience is excellent." ”

At this moment, the real airspeed is 1550 kilometers per hour!

Sitting in the cockpit of a supersonic Warhawk creates a sense of tranquility that is intoxicating.

Such a wonderful feeling, after the retirement of the Concorde supersonic passenger aircraft, ordinary people in the whole world can no longer experience it, even the pilots of civil airliners can only fly snail-like passenger planes, but cannot touch the field of supersonic flight.

This is the experience of an Air Force pilot, the romance and feelings of the profession of a pilot.

Think about it, if you have the opportunity to carry your sister, fly at supersonic speed at an altitude of 10,000 meters, look down at the vast land, and look up at the longed-for universe, how romantic it is?

Of course, there should be no chance to fly with a girl, or the possibility is very small.

Yang Xiaolong's words were short, and he couldn't cry or laugh: "I said if you feel in your body, but I didn't ask you about your inner feelings and thoughts." ”

Hearing this, Zhou Hai hurriedly replied: "The body doesn't." ”

"That's good, let me explain to you, when breaking the sound barrier, you must be fast and steady. You are well aware of the situation in the transonic region, the air flow is very complex, and the body will tremble due to the increase in drag and the decrease in lift. ”

Yang Xiaolong breathed a sigh of relief in his heart and said: "Long-term transonic flight will seriously damage the structure of the aircraft and affect the life of the aircraft, you know all this, so I won't say much." I'll slow down, I'll give you control later, and you fly supersonic once. ”

"Yes!" Zhou Hai nodded in reply, his powerful voice revealing anticipation.

Yang Xiaolong, who stayed in the back seat, performed a series of operations, turned off the engine afterburner device, and steadily controlled the L-15C Falcon to gradually decelerate, get out of the supersonic flight state, and recover its stability after a short tremor and bump.

Yang Xiaolong, whose physical strength was greatly consumed, gasped slightly, put down the rod, and handed over the control of the body to Zhou Hai again.

"Instructor Yang, are you alright?" Zhou Hai regained his grip on the sensitive joystick with his right hand, and when he heard Yang Xiaolong's panting, he couldn't help but say with concern.

Yang Xiaolong responded heartily: "It's okay, it's just that the physical exertion is too great, and you can return to the flight after flying at supersonic speed, your performance today is very good, if you accumulate another 30 flight hours, you can fly solo and refuel." ”

"I will."

Zhou Hai's eyes stared at the blue halo that seemed to connect heaven and earth directly ahead, holding the joystick with his right hand, opening the engine afterburner state with his left hand, and pushing the throttle valve up.

The two engines re-entered the afterburner state, and the L-15C Falcon, which was flying smoothly underneath, seemed to resonate with its heart, reacted, and accelerated forward.

Calm and powerful.

The warhawk shuttled through the thin air at a high altitude, flying faster and faster, the air resistance increased geometrically, and after more than ten seconds, accompanied by the silver-gray body shrouded by a strong pressure wave, after a violent and brief tremor, a cone-shaped white shock wave cloud appeared again.

"Boom!"

The thunder resounded all around, the world fell back into silence, and a sense of peace filled the air, and the L-15C Falcon steadily broke through the sound barrier and entered supersonic flight.

1,300 km/h at Mach 1.06.

"It still feels so good." Zhou Hai held the metal joystick tightly and looked at the surrounding world through the cockpit glass, his heart throbbing, and his eyes showed a look of intoxication.

At this time, Yang Xiaolong's voice rang out: "Okay, Zhou Hai, slow down and return, today's training is over here, and I will continue to fly tomorrow." ”

In the rear position, Yang Xiaolong breathed onboard oxygen, picked up the tactical tablet terminal with his hand, clicked on the screen, and gave an evaluation on Zhou Hai's student record form.

The results of the first actual flight are excellent. ——