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In the laboratory, Li Chen walked in front of the blackboard, their envisaged crank rod drawn out.
All visual image seen toggle link, the hearts more ecstasy.
Problem of the century ah, solved, finally resolved.
Because Xu Shen learn to ask everyone to eat watermelon, the idea came during Li Chen to take in watermelon, while ending the problem of this century. It still if the moat general problem.
Li Chen could not help but in retrospect, it seems vaguely remember someone said to himself, steam engines ancient times has experienced too much and marshes, right? It is not so easy. Originally appeared steam engine, just as the force of the steam spray machine. It appears completely crank link, spanning several centuries. Experienced several generations continuous improvement ......
He forgot Is there such a thing children, seem to remember someone once said. Can not remember.
unimportant.
Ten thousand years later, he finally solved the force of change operation.
Liu Jinghong suddenly frowned: "This is not a problem, the problem can not be solved crank rod.."
Li Chen quickly asked: "you say."
Liu Jinghong, said: "We need the linear motion of the steam engine, the converted rotational force is good but this is only to solve the crank and connecting rod rotational force, but yet blocked a road, and that is not the driving force.."
"Ok?"
"You see, if the steam pushes the piston rod and crank, causing rotation of the disk outside the semi-circle. It still can not be reset ah. We need to make repeated movement of the piston, to be pushed out, but also withdrew, in order to reciprocate it can be pushed out, change the force of running, but does not shrink back. "
Liu caught pointing to the blackboard: "Because, in a closed cylinder, full of energy is expanding in the internal pressure and air, so there will be continuous force constantly pushing forward the piston through the piston rod. the outer circle can be pushed half a turn. However, once rotated half a lap, reached the limit rod, it is bound to want to push the piston back. but there are cylinders in sustained energy, would not it be put piston stuck? that way, this disc, it can only half a turn ah. "
Liu Jinghong finished, deep that some students, while others are shaking his head, knew certainly not caught Liu stated.
Li Zhen drying natural smile: "You want to ask questions of the problem, in a nutshell is this: The force output internal drive pistons and connecting rods, the disc only half a turn out but it will be because of the constant internal output, and round rotation half will be stuck on the output power continuously but will become a drag? What is the meaning of this? "
"Yeah, I could expound do not know, but what it means."
"Liu seniors to raise this issue very thorough. But it misses the point."
"what?"
Everyone quickly pricked up his ears.
Li Chen, pointing to the blackboard painted on the disc, said:. "However, if this disk design is relatively large, and it's quality over the thrust of the steam vapor then push the disc after a half circle, but the disc will the inertia generated inertia will continue to drive the disk half turn after turn. in the process of the semi-circle to the connecting rod will drive the piston return is then steam will again push the piston rod out and,Push again rotating disc.
With the greater the inertia, faster, repeatedly of the piston will work faster. The rotation of the disc will be faster. The force of the piston, to achieve the transition from circular motion to linear motion. Circular motion generated by the inertia, and the anti-back up, to achieve a repetitive movement of the piston. It's a cycle. "
"Well ah!"
Liu Jinghong exclamation, a racking our brains: "I forgot, ignored the rotating disk itself also produces inertia.."
Qin Enze gasped: "It looks simple, but actually inside so complicated ah how you want to come out.?"
"Oh, I just know for sure that the disc will lead to the connecting rod, so that the piston reset. But I just thought well how to say. Well, I just knew principle, is unable to speak."
"Do not bragging. Belated?"
"I thought Circular will definitely return to drive the piston return. This is a you help me, I help your situation, and generate the conversion of force."
"Inertia, inertia, how I overlooked this yet."
"......"
Li Zhen clapped her hands: "Quick, we need to verify immediately entity Liu seniors, could you calculate the cost of this model.."
Liu fleeting excitement nodded and immediately began to calculate the cost played, after a moment, said:. "We just need to machined assemblies of these things I think that now belongs to top-secret stage, can not let the blacksmith, cobbler learn a full cost is not expensive, probably just over five hundred dollars, but we have to assemble their own. "
Li Chen nodded: "That to a few people, you go to the city as soon as possible, to build back the form must be fast.."
"understand."
Liu fleeting point seven or eight people with him, many people avoid making mistakes.
He asked Li Zhen said: "Rubber head of the piston, the cylinders must choose good not leak.."
"I know, there is a specialized shop to get the rubber, I will do it in accordance with the mold, absolutely no difference between a dime."
"And, the metal disk also must be massive. To be round."
"Do not worry. I'm not getting you back oval."
"......"
Liu Jinghong, who excitedly to find people to build the parts, and Li Chen to finally exhaled breath, his face a smile anywhere lay down. Close your eyes, asleep in a state filled with smiles.
Tired for too long. Tight for too long.
Until today, we can finally relax down.
Laboratory other students, but also the furniture tired and sat down. Continued more than a week obsessions, until today, finally completely relaxed.
And some students very hard, but it is still not relaxed at this moment.
For example, Chinese display on the square.
Many people are asleep slumped on the floor with ease, while the side Han was has come up with a laptop, constantly thinking about the things that are written in a notebook.
All are teeny small print on the notebook, dense. In addition to him, few people can understand.
From the chemical energy of water into the air energy conversion is started, and then force the steam into mechanical energy.
It is converted into linear motion and then circular motion.
Bit by bit, he learned from Li Chen here,And everything out on her own, all recorded in a notebook.
Gradually, he suddenly woke up, it is a remarkable fact.
Two weeks ago, he was a freshman, nothing, do not understand anything.
Two weeks later, on behalf of their own notebook with what they learned in two weeks: energy conversion, energy, vacuum pressure, conservation of energy in the air ......
He is now, perhaps his own involvement does not seem a recovery test of the steam engine. It might be a participation in Kyushu never had academic change.
From recovery product, to recover gradually move closer to the academic reforms.
"This is academic."
Fang Han was whispering loudly, lost in thought.
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