After shooting out two palm bolts, Zhang Tie moved the nose of the airplane almost at the same time at the fastest speed.
Zhang Tie's palm bolt was a sonic boom; however, it didn't have a great effect on a LV 12 wing demon. It could only slightly slow down the wing demon's flight speed before dodging away.
In such a split second, Zhang Tie had exerted his full efforts to step on the pedal of the man-powered plane. Meanwhile, the man-powered plane cut into a sinking cold air current on the left and started to dive towards the ground rapidly.
Zhang Tie understood that he could never defeat a LV 12 wing demon in the sky. Last time, he was almost embarrassed by a LV 11 wing demon. This time, Zhang Tie really couldn't think of any means to deal with a LV 12 wing demon besides escaping.
The wing demon shrieked as it caught up with Zhang Tie from behind. When Zhang Tie had the man-powered plane descend, the wing demon had already been less than 80 m away from him. Sitting in the cockpit, Zhang Tie leaned to one side as he raised his hand and shot out another palm bolt. The wing demon waved a weird fork and knocked away Zhang Tie's palm bolt. However, due to such a delay, Zhang Tie was 10 m away from it again.
At the critical moment, Zhang Tie recovered his composure at once as the topography of Tokei City, the capital of Titanic Duchy, appeared in his mind at once...
Zhang Tie knew that this time. If he wanted to escape, he could only use three things at the moment — the mountain. Water, and the human-powered plane he was piloting.
There were endless hills in the east of Tokei City. There were many wavy ascending airflows above the hills. In those wavy ascending airflows, Zhang Tie could fly much faster than normal in the sky with a special glider skill.
Beyond that hill, in the more eastern location. More than three hundred kilometers away from the hills, there was a huge lake. The lake was very large. It seemed to be called the Star Leaf Lake, the largest freshwater lake in the Titanic Duchy. As long as they reached there, they would be able to reach the lake. Even if they lost another man-powered plane. His chances of escaping this place would also increase greatly.
In the sky, Zhang Tie could not defeat a LV 12 wing demon; however, in the water, Zhang Tie had not met his match yet.
In the blink of an eye, Zhang Tie had dived from over 10,000 m high to 3,000-4,000 m high. Due to the sharp airflow friction, the propeller in front of the man-powered plane uttered bizarre and weird sounds. It was simply deafening.
Zhang Tie released some more palm bolts to slow down the wing demon's chasing speed a bit. However, it was just a bit. In the process, the wing demon narrowed the distance between it and Zhang Tie's man-powered plane to less than 60 m.
If it was the glider that Zhang Tie drove before, he might have long been caught up by the wing demons. However, with the extra driving force provided by the propeller of the man-powered plane, Zhang Tie's extra speed slowed down the time for the wing demons to catch up with him.
Facing the chilly wind and hearing the shrieks of the propeller, Zhang Tie could see more and more things on the ground. At first glance, Zhang Tie could even see the dense military camps and demonized puppets on the ground. The pyramid-shaped flesh mountain looked more terrifying at this moment. However, Zhang Tie didn't have time to observe it carefully; instead, he just focused on escaping at full speed.
When Zhang Tie almost caught sight of the hills in the distance, what he was worried about most happened. Two more purple black spots rapidly approached him in front and on his left.
'Three LV 12 wing demons? What's the big prize today? '
'F * ck! '
Zhang Tie didn't have time to think about it; instead, he stretched out his hand and took off a standard javelin which was used to deal with LV 10 wing demons from the weapon rack on both sides of the cockpit of the glider. Closely after that, he turned around and threw it towards the wing demon behind him.
The power of a standard javelin could never be matched by palm bolts. In the blink of an eye, the javelin had crossed over 50 m and arrived in front of the LV 12 wing demon. The LV 12 wing demon smashed the javelin by its fork, causing a loud sound. However, the great strength of the javelin sent the LV 12 wing demon flying backward for over 10 m. Flapping its wings, the LV 12 wing demon stopped itself. After that, it hurriedly caught up with Zhang Tie.
As a result, the distance between Zhang Tie and the nearest LV 12 wing demon was shortened to over 100 m. The LV 12 wing demon shrieked in the air as if it was very furious or warning the other two wing demons to pay attention to Zhang Tie's trick.
When all the javelins on the weapon rack on both sides of the cockpit of the man-powered plane were almost used up, Zhang Tie finally drove the glider into the air above the hills. The three LV 12 wing demons also completed the encirclement of Zhang Tie. When the three LV 12 wing demons completed the encirclement of Zhang Tie, each wing demon was less than 100 m away from Zhang Tie.
Anyone could never escape from the encirclement of 3 LV 12 wing demons in such a short distance, no matter by man-powered plane or glider.
Without the undulating hills on the ground, Zhang Tie felt that he could never escape away from there. Even those who had been silently watching this exciting chase in the air from afar felt that the dust had settled by now.
However, at this moment, Zhang Tie's man-powered plane finally entered the air above the hills.
The undulating hills would form wavy airflows in the air. Based on his sharp senses, Zhang Tie started to shuttle through the undulating topographical dynamic updrafts like a butterfly. In this way, Zhang Tie abruptly accelerated his man-powered plane and got rid of a LV 12 wing demon at once.
This was a unique flying skill that Zhang Tie developed based on the characteristics of the glider. Zhang Tie named it as gliding by using the force of shear layer.
Gliding by using the force of shear layer could only be carried out in the air above the terrain with hills. The topographical dynamic updrafts here were very special. Additionally, the speed of the airflows was very different. In such a place, as long as the glider constantly made curved maneuvers in the airflows, Zhang Tie would speed up each time he made a turn.
In the natural world, the closest flying method to this kind of gliding technique was the seagull flying between the waves. The undulating hills on the ground were equivalent to the undulating waves on the sea. The undulating waves and terrain brought about undulating airflow, and the speed of the undulating airflow would be different. This was the basis of using the shear layer to glide.
In such a flight, the loss of airspeed in each turn would be less than the gain of airspeed difference. In this way, the glider could constantly accumulate speed and energy. The process of acceleration occurred when the glider entered a high-speed airflow after making a large angle turn from a static airflow or a low-speed region. In this process, the glider's speed decreased relative to the air; however, it increased relative to the ground. After making another large angle turn, it would lose a part of its speed. After entering the high-speed airflow once again, it would accelerate. In this way, the glider's speed would decrease, the ground speed would increase, and the ground speed would turn into airspeed. As a result, the glider's speed would reach its utmost...
Zhang Tie had not displayed such a flying skill in front of others at all. Because it was almost impossible for other glider drivers to keenly sense the speed changes and levels of those airflows at a low altitude of hundreds of meters above the ground in high-speed flight, not to mention that they had to bear the terrifying overload caused by the glider's large angle turn frequently. Facing such an overload, even the glider might disintegrate in a split second, not to mention humans.
Such a flying skill was absolutely an unattainable "marvelous skill" for glider drivers.
Last time, Zhang Tie was pushed into the water by a LV 11 wing demon and lost a glider. The biggest reason was that there was no terrain within hundreds of miles that Zhang Tie could make use of. As a result, his gliding skill by using the force of shear layer was completely useless.
However, it was different this time. Coincidentally, there was a vast hill outside Tokei City which he could make use of. He could exert his hidden ability. There was always a way out.
The propeller driven by the power pedal could make up for Zhang Tie's loss of speed when he turned out of the high-speed airflow. As a result, he could cut into the high-speed airflow at a higher speed. After a few changes, Zhang Tie's human-powered plane had already surpassed 600 km/h. He instantly got rid of the three wing demons.
Although wing demons could glide by airflow, they could not match some birds in terms of aerodynamic layout and lift-drag ratio. Given the utilization of airflow, they could never match some birds or human gliders. Therefore, even in the same environment, they could not catch up with Zhang Tie.
The three wing demons uttered furious and unpleasant roars behind him. When Zhang Tie thought that he had already gotten rid of them, a powerful qi suddenly rose from the ground.
The moment Zhang Tie sensed this qi, before he made any response, the right wing of his human-powered plane had been shattered by a great strength.
After the right wing of the man-powered plane was shattered, Zhang Tie heard a terrifying sound breaking the sound barrier.
What a powerful sonic boom!
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