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Volume 14, Chapter 18 The Birth of Human-powered Aircraft

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    Ever since Zhang Tie was chased by a winged demon while flying a glider last time, and he had to fly the glider into the water to escape, engineers at the glider base of the Republic of Hernandez have been busy helping Zhang Tie build a new glider.  .

    In order to build a new glider for Zhang Tie, the base commander, Colonel Howlson, personally contacted the country. The Republic of Hernandez finally sent a team of experts to Serne with several train carriages of equipment and tools.  Sri Lanka.

    Zhang Tie didn't know it at the time. When he found out, the expert team from the Republic of Hernandez had already arrived. Zhang Tie was still a little embarrassed about the Republic of Hernand's mobilization of troops. After the explanation of the base commander, Colonel Howlson, Zhang Tie knew that he was now  His reputation is actually very famous in the Republic of Hernand.

    After his affair with the glider base spread to the Republic of Hernand, and was exaggerated by the domestic media of the Republic of Hernand, almost every citizen of the Republic of Hernand knew that there was a man who had obtained the Sernes in the Sernes war zone.  The brave air cavalry with the honorary title of Eagle are flying the gliders of the Republic of Hohn in combat, and they have achieved fruitful results, which makes the winged demons of the demon clan feel emboldened.

    In the Republic of Holland at this moment, Zhang Tie is definitely an idol-level figure.

    Therefore, after Zhang Tie's second glider crashed, the Republic of Holland, which learned of the situation, elevated the matter to the level of national honor and sent a very powerful team of experts to Serne with equipment and machines.  Si wants to build a brand new glider for Zhang Tie.

    In the words of Colonel Howlson, the Eagle of Serness can fly the glider of the Republic of Hern to fight in the sky to protect the human race. That is the honor of the entire Republic of Hern.

    After the expert team from the Republic of Hernandez came to Serness, they met Zhang Tie twice and had some communication with Zhang Tie. Because it was the rainy season at that time, flying gliders in the sky often lost the thermal air currents.  The power brought by it, and the weather was also a great test for this unpowered flying device. When experts from the Republic of Holland asked Zhang Tie what kind of glider he needed.  Zhang Tie once said this to those experts.

    "For me, the wind and airflow in the sky can already be used to the extreme. In this regard, I think it will be difficult for you to help me make any breakthroughs, but the situation on the battlefield is very complicated. Sometimes, like in the past  In the past two months, due to heavy rain, when these natural conditions cannot be used, as a glider pilot, I will be very passive on the battlefield, and flying a glider will become a very dangerous thing, if possible.  , I hope that the glider I fly in the future can have other sources of power when it cannot rely on airflow and wind. Can the glider fly freely in the sky like pedaling a bicycle? This is my request."

    When Zhang Tie said this, he did not imagine whether the expert team from the Republic of Holland could do it. He just said what he wanted. If those people couldn't do it, it wouldn't be good for Zhang Tie either.  What would be lost if done.  That was definitely a huge surprise for Zhang Tie, and it meant that he would have more freedom in the sky.

    A few days after saying this, the expert team from the Republic of Hernandez invited Zhang Tie to the glider base for two very comprehensive physical tests.

    Zhang Tie didn't know at the time what the relationship between flying a glider and his physical fitness was, but he went anyway. During the physical fitness test, he only remembered that the members of the expert team from the Republic of Hernand looked at him with bright eyes  ¡­

    Since then, the expert team from the Republic of Hernandez has had little contact with Zhang Tie at the glider base, until these two days.  Zhang Tiecai was notified that a new glider had been built and he was asked to take a look.

    ??October 7th, the glider base of the Republic of Hernand

    Zhang Tie once again appeared in a hangar at the base. The final product, the glider that took dozens of expert engineers and hundreds of technicians from the Republic of Hernandez for more than a month, appeared in front of Zhang Tie.

    The appearance of that glider looks somewhat similar to the Windtalker II.  But the biggest difference between the entire glider and the Wind Whisperer II, or the biggest difference from all gliders, is that it has an extra double-winged propeller on its head.

    Zhang Tie sat in the cockpit.  I found that the layout and settings in the cockpit have also completely changed. The steering pedals under my feet are gone and replaced by a mechanism similar to the pedals of a bicycle. There are also some changes in the elevator. It seems that there is a little more mechanism. The previous glider's  The elevator can only be pulled up or pressed down. As for the current elevator rudder, Zhang Tie found that in addition to being pulled up and pressed down, it can also be turned about 90 degrees to the left and right like a car steering wheel.  It looks like there is an additional push rod with an unknown purpose under the elevator.

      In addition to these, the entire glider still retains a very obvious Zhang style-the seats of the glider are foldable, and there are still two on the left and right sides of the cockpit that allow him to "lift up the glider with his hands"  ¡°With the recessed handle, the bilge cover of the glider cockpit can still slide.

    Zhang Tie was a little excited and looked around in the cockpit of the glider. Finally, he couldn't help but put his feet on the pair of bicycle pedals and pedaled them to see what the effect would be.

    For ordinary people, it may be very difficult to step on the pedal. The weaker ones may not be able to step on the pedal many times with all their strength, but for Zhang Tie, he stepped on the pedal.  It feels like it¡¯s really not that much more difficult than riding a bicycle for ordinary people.

    As soon as the pedal was stepped on, the two propellers at the nose of the glider began to rotate with a whirring sound. Zhang Tie's feet slowly increased speed, and the propellers at the nose of the glider began to rotate faster and slowly.  , Zhang Tie found that the entire glider started to move and began to slowly slide forward on the ground.

    While the glider was running in the hangar, Zhang Tie felt something in his heart and turned the rudder to the right. The glider also began to slide to the right while sliding. Zhang Tie turned the rudder to the left and the glider also started to slide.  Just start turning left.

    Zhang Tie was very excited. He finally understood the thoughts of the experts from the Republic of Hernandez. Since the propeller can push the glider forward on the ground, this thrust also exists in the sky. This is how the glider is moving.  All the extra power you can get in the sky.

    Zhang Tie jumped out of the glider's stance cabin.  I happily asked the experts and engineers from the Republic of Hohn, "How did you do it?"

    "What you said to us at that time gave us a lot of inspiration and inspiration. After careful consideration, we drew on the design ideas of early human aircraft before the cataclysm, and used a variable speed gear set and chain to step on your feet.  The power generated when the pedals are moved is transferred to the propeller in front, giving the glider the ability of early human aircraft before the Cataclysm, allowing it to gain additional power when the glider cannot rely on updrafts and wind. "

    "Thank you, you are really amazing!"

    "Such a glider is specially designed and manufactured for you. If it were someone else, such a design might not be of much use to them, because their strength and stamina might not be able to support such a flight for too long.  Remember the test we did on you earlier? We found that the strength in your legs is very powerful, and your physical strength and endurance are also extraordinary. If the strength in your legs is converted into the power of the machine,  The legs are roughly equivalent to a 20-horsepower engine with good performance, which is why we came up with this design idea.¡±

    "Ah, is the power of my feet equivalent to the power of a 20-horsepower engine? How much is that?"

    "The maximum power that ordinary people without ignition points can produce in one minute is only one horsepower. In ten minutes, the maximum power that ordinary people can produce is only about half a horsepower. The so-called 20-horsepower engine  Power. Roughly speaking, it is equivalent to supporting a 1,500 kilogram object with your feet while lying down, and lifting the object by one meter in one second, and you can repeat it.  This process. This is not an instant explosive force, but a continuous and repeated force. In terms of explosive force, many people can easily exceed 1,500 kilograms of force on their feet, but if it takes a person half an hour or more.  There are very few people who can repeat the process of lifting a 1,500 kilogram object by one meter in one second with both feet within an hour."

    "Oh. So that's it!" Zhang Tie suddenly realized. He didn't expect that his feet could be as powerful as a 20-horsepower engine at this moment. This made him slightly proud. Not everyone has such an ability.

    "Can I make the glider fly directly to the sky by pressing this pedal?"

    "Although we have set up an assistant device that uses pedals to drive the glider to run, the requirements for your strength will be very high. But if you reach the sky, the situation will be different. As long as your physical strength can support it, let  The propeller maintains a minimum speed of more than 800 revolutions per minute, which can provide endless power for this glider, allowing this glider to still have very good flight and control performance without relying on climatic conditions. We feel  , this glider can no longer be called a glider, but should be called a human-powered aircraft!"

    "Human-powered aircraft, this name is very interesting!" Zhang Tie laughed, thinking of the former Aircraft Brotherhood, Zhang Tie felt that airplanes seemed to be too close to him, but he didn't expect thatI can really fly a plane now.

    ¡°Can I try it now?¡±

    "certainly!"

    "I still don't understand what the push rod under the elevator is for. I saw several numbers written here, 50, 30, 15 and 5, as well as an empty and a ground. What does this mean?  ?¡±

    "This is the transmission lever. It can adjust the speed ratio between the power pedal and the propeller and the power output direction of the pedal under your foot. There are two power output directions and four gears. Among those four gears, the highest  The gear means that you can make the propeller of this human-powered aircraft rotate 50 times by pressing the pedal once. The next gear is 30 times, and so on. The higher the speed ratio, the force you need to pedal once.  The higher it is, the more it can be flexibly adjusted according to your physical strength. The space and ground represent the direction of the power output of the pedal. The space corresponds to the power being transmitted to the propeller in front when you step on the pedal, providing the glider with a smooth movement.  The power in the air, and the word "µØ" means that when you step on the pedals, the power will be transmitted to the ground wheels on the glider, just like riding a bicycle, allowing the glider to run on the ground"

    ¡­¡­

    A few minutes later, after Zhang Tie thoroughly understood how this thing called a human-powered aircraft was controlled, the human-powered aircraft was pushed onto the runway.

    Zhang Tie sat back in the cockpit. Without thinking, he pushed the gear lever to the ground position, then put his foot firmly on the ground and started to pedal

    There was no tractor towing it, and Zhang Tie did not lift up the glider and run. Zhang Tie just stepped on the pedal like riding a bicycle. The glider went faster and faster on the runway.  Finally left the runway and flew into the sky

    After flying into the sky, Zhang Tie pushed the gear to the 50 position below the empty word, and then began to quickly step on the starting power pedal, and the propeller in front spun quickly

    Finally, without the help of wind and updrafts, Zhang Tie relied on the power of his own feet to make the human-powered aircraft fly freely in the sky like an airplane.

    ¡­¡­

    The feeling of flying this human-powered aircraft in the air is really indescribable to Zhang Tie. If he is flying an ordinary glider, he still needs to pay attention to the direction of wind and airflow at all times. But when driving this human-powered aircraft, Zhang Tie feels that he is really flying.  Free, completely free in the sky.

    In Zhang Tie's opinion, this thing cannot be called an airplane, but should be called a sky bicycle. As long as the body still has strength and the pedals are pressed continuously, this human-powered airplane can fly in the sky.  Fly freely.

    When flying freely, Zhang Tie can use it as a glider when encountering an updraft that can be used, so that he can take a rest and recover his strength. When there is no airflow to use, Zhang Tie can  By stepping on it with your feet, you can still let it fly however you want, without having to consider the influence of the weather at all.

    ¡°If Zhang Tie stepped on the power pedal while flying using the airflow and let the propellers work together, Zhang Tie found that his flying speed could be almost 20 to 30% faster.

    With such a human-powered aircraft, Zhang Tie felt even more confident about the task he agreed to take over

    ¡­¡­

    PS: On Earth, human-powered aircraft driven by human power could fly more than 100 kilometers in the 1980s. Have you ever thought that one day human-powered aircraft competitions could become an Olympic event?  Ha ha¡­¡­

    The National Day is here, and the whole country is celebrating together. In the last few hours, everyone should hurry up and vote for this month
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