Everyone was staring at the track ahead. Li Zhen, in particular, clenched his fists unconsciously.
When running about a kilometer, one of the auxiliary steam cars broke the rope.
After the inertia is up, a steam car will use force to drag it, the speed will be faster, and the force will be more concentrated.
On the plane, Liu Jinghong nervously grabbed the steering column that controlled the wings of the plane and stared straight ahead.
"Take off."
"Why aren't you taking off yet?"
“…”
The speed has exceeded forty.
The distance was already halfway through, and Liu Jinghong knew that he could not go on like this. The maximum speed of a steam car is only sixty or seventy. Dragging yourself to forty is probably the limit of the limit.
Gritting his teeth, Liu Jinghong pushed up the control lever.
At the same time, the wings of the aircraft were connected by the transmission rod and tilted upward.
With such a lever, the flowing air immediately began to turn into lift, providing the aircraft with upward power.
And just like that, the steam car in front suddenly stopped.
The student from the Aviation Academy who was driving saw the speed of the car suddenly decrease. This feeling was that there was a huge wind resistance coming from behind.
Looking back inadvertently, the student from the Aviation Academy found that the front wheels of the plane behind him were raised a little, making it a little floaty and frivolous.
Will it succeed
Everyone held their breath.
The students from the Aviation Academy turned the horsepower to the maximum and kept adding fuel to the steam car. Continuously increase the output of the valve. But the steam car has reached its limit, and it can only go so fast.
Liu Jinghong was sitting on the plane, his eyes fixed on the landing gear below.
"Fly."
"Fly up."
"Fly quickly, please!"
He was sitting in the plane, and his whole body was constantly ups and downs. I can clearly feel that the plane keeps raising its head, then keeps bumping and falling, keeps raising its head, and keeps falling again.
No, the speed is still not fast enough. The power is still not strong enough.
"Forty-five kilometers away!"
In the steam car ahead, the driver suddenly pulled his neck and shouted.
When Liu Jinghong heard this, a look of defeat immediately flashed in his eyes.
If there is still no sign of takeoff at a ground speed of forty-five miles, then the road ahead will actually be full of ups and downs.
The distance of five kilometers was quickly reached. Liu Jinghong's monoplane reached its maximum limit, only raising the front wheel about ten centimeters. It never completely lifted off the ground.
After returning, Liu Jinghong was dejected and couldn't help but lament: "It's just a little bit close. If the speed reaches 60 kilometers, I'm sure it will be able to take off."
Li Zhen smiled and shook his head: "Sixty? No, I think it needs at least a hundred kilometers before it can fly safely, reliably and stably."
Liu Jinghong frowned: "Why?"
Li Zhen said: "Taking off is only the first step. The most important thing is to move stably in the air. If the speed is lower than 100, it will be very dangerous. I am worried that it may crash at any time."
Liu Jinghong sighed, this is the truth. How could he not understand.
But can the radial engine still under development be able to do this
Can a radial engine provide a thrust of more than 100 kilometers per hour for an aircraft weighing several hundred kilograms
It's hard.
If converted in this way, the radial engine must provide more than one ton of thrust.
With such a terrifying thrust, even Li Zhen had no confidence. If it can be realized within ten years, it will be considered a great achievement.
Li Zhen sat on the lawn to rest for a while and said, "Now we can only see how the wings are doing."
While I was talking, the biplane over there was ready.
Still the same pattern. Two steam cars came to pull the plant, but a rope broke midway.
Like Liu Jinghong, Xu Xiufeng also had to conduct the experiment himself this time.
Li Zhen frowned and said, "Vice President Xu, you are older. You are different from Jinghong. Leave the test to others. As you just saw, bumps are inevitable. And this still has a certain risk factor."
Xu Xiufeng said nonchalantly: "I designed the biplane model myself. I have to test it myself."
No one could resist Xu Xiufeng, so they had no choice but to allow Xu Xiufeng to board the biplane and fasten the safety rope.
After experiencing the failure of the monoplane, the onlookers were already a little less interested.
"It's boring."
"I thought I could really fly, but my feelings are just dragging me around."
"What's the point of that? It means nothing."
“If you can’t even fly a kite, what’s the point of it?”
"Then you go."
"But I want to see what the one with two wings looks like."
"It should be easier to fly with two wings, right?"
"It doesn't make much sense even if it flies. Doesn't it need to be towed by a steam car? And... it has to be straight and able to travel quickly. Where are there so many qualified roads in New Kyushu? This is not It’s a waste of time.”
"There is no road to build."
"Crazy. Just to let them run away like this, do you build roads like this everywhere?"
“…”
'Woooooo'
While everyone was chatting, the steam locomotive started, and the two steam locomotives towed the double-decker plane and drove out slowly.
Gradually, the speed is getting faster and faster.
Li Zhen and others stood at the rear, staring closely at the plane slowly leaving in front, frowning.
I don’t know whether it will succeed this time.
If it still fails to succeed this time, it will once again encounter an unprecedented bottleneck.
The fuselage needs to be re-planned to reduce the weight by at least half. Then it is necessary to exploit the potential of the radial engine again and force out the maximum speed and torque.
But in fact, no matter which one it is, it is extremely difficult.
The current two models were developed after overturning the original drafts many times and designing them many times. The weight is already very light. If you still want to lose weight significantly, it's not that difficult.
It is even more difficult to squeeze out the potential of radial engines. Now that the radial engine has not been fully developed, how can it be upgraded
The stakes are high. Everyone held their breath.
'Woooooo'
The steam car is going faster and faster.
Double-decker planes are also getting faster and faster.
Xu Xiufeng's face looked relaxed, because Liu Jinghong only started to raise his head when he was two kilometers away. He was not in a hurry.
"wrong!"
Xu Xiufeng exclaimed and suddenly lowered his head to look down.
But I saw that the front wheel had actually been raised.
"No way, I haven't operated the control lever yet."
Xu Xiufeng exclaimed. Looking at the distance, he saw that it had just reached one kilometer.
The speed of the car was only over 30 kilometers.
"Forty!"
A rope broke in the steam car ahead, and the driver of the remaining car shouted.
Xu Xiufeng took a deep breath, then held his breath again, and slowly pushed the operating lever up...
(End of chapter)