Chapter 232 Power
"In this class, let's learn about aircraft models."
In the large classroom of the supervisory building, a young Xuegong teacher stood in front of the stage, nervously flipping through the lesson preparation materials.
His name is Ou Zhiyuan, and he is a sixth-grade student at the academy led by Doctor of Science Su Feng.
Su Feng has been busy researching reciprocating piston engines recently, and the development progress has reached a critical juncture. He has no time to give lectures, so he pulls Ou Zhiyuan, who is about to graduate, over and asks him to teach students.
It is said that it is a class, but it will not involve too advanced content-because it is necessary for students in other countries who do not have a strong foundation in science to understand it.
Brush and pull.
Li Ang opened the class notes, still sitting upright—although he was the first to make the model airplane, but with the help of the cultivation system, Su Feng and others also burst out some ideas and ideas that are completely different from those in the other world, which are worth his attention.
What's more, Ou Zhiyuan was an intern at the publication office, and he also knew Li Ang before. The relationship is okay.
Seeing Li Ang's serious appearance, the students of Yu State who were sitting next to him also put away their disappointment and negligence because the teacher in class was not Su Feng, and opened the class notes one after another, posing to listen to the lecture.
Ou Zhiyuan on the stage nodded gratefully to Li Ang, coughed lightly, used his thoughts to control the chalk to float into the air, and began to write on the blackboard.
"Everyone should know that flying model aircraft was the latest invention a year ago. It is a man-made instrument that can fly in the air..
The difference from the flying sword is that the power of the flying sword comes from the spiritual power provided by the monk.
The power of the model aircraft comes from talismans. The talisman generates wind and makes the model airplane fly. There is a layer in the middle. "
"It is true that due to the different power sources, the current model aircraft cannot move flexibly like a flying sword, up and down, commanding like an arm. But also because of the different power sources, the aircraft model has lower requirements for the operator.
Even a monk who has just entered the air-sensing environment can control a medium-to-large metal model airplane to change its direction through the air with weak thoughts. This is something Feijian cannot do. "
“More importantly, the model aircraft has revealed many new possibilities for us—if the model aircraft continues to become bigger, will it be able to carry people and cargo?”
"Is it possible for people to sit in the model aircraft and control the steering of the model aircraft directly through the ropes and cables? Just like the driver of the carriage controls the carriage through the reins."
"The number of monks in a country is limited, but the number of ordinary people is much, much larger.
If the enlarged model airplane, or airplane, can be controlled by ordinary people and used to carry goods, it will be countless times faster than today's horse-drawn carriage.
It is even more efficient than flying sword transportation. "
When talking about professional content, Ou Zhiyuan immediately showed excitement on his face, and he talked endlessly: "Airplanes can carry people and goods, cross dangerous terrains, and travel thousands of miles in a day.
This is something no monk can do.
And, this possibility is completely feasible in the field of arithmetic. "
He manipulated the chalk and wrote several words on the blackboard.
Lift, pressure, velocity, density, area, lift coefficient.
"Lift force, as the name suggests, is the force that lifts up. Within the scope of science, we regard air and water as fluids. In air flow and water flow, the faster the flow rate, the smaller the pressure generated by the fluid"
"The side with the strongest pressure will generate thrust on the side with the weakest pressure. Model airplane flight and ship sailing are based on this principle,"
"Why some model airplanes can fly, while others can't? This is related to the concept called lift coefficient. We use lift coefficient to measure the flight performance of each model airplane. Its calculation formula For "lift coefficient equals lift, divided by (speed times speed itself, times wing area times air density times one-half). "
"The larger the lift coefficient, the more perfect the model's shape theoretically."
Ou Zhiyuan talked eloquently on the stage, and the students in the audience could barely understand it at first, but when he introduced arithmetic and used a lot of mathematical formulas, the students below gradually became numb.
Especially some foreign students.
As for Li Ang, he was once again amazed by the ingenuity of Su Feng and others—they created the wind tunnel on their own after only listening to a few words from himself.
Use talismans to generate and control airflow. Place the aircraft model in the wind tunnel for simulation, with the power of thought
Observe the airflow and get a lot of data,
In turn, it complements fluid mechanics and aerodynamics.
Experience is extremely personal, and it will be distorted if written in a book.
Mathematics is a formal science, anyone can learn, verify, and get the same results.
Newton's law of viscosity, Bernoulli equation, Euler equation, Navier-Stokes equation, Kutta-Zhukovsky condition, fluid continuity theory.
As long as the development continues, there will be aerodynamics, and there will be large aircraft.
“The future of aeromodelling is infinitely bright.”
Ou Zhiyuan smiled and took out a delicate model airplane with two-winged propellers from under the podium, pushed it lightly, and made it hover in the air in the classroom, attracting exclamations from the audience.
"Tomorrow and the day after tomorrow, there should be an engineering subject in everyone's class schedule. Then you can apply to the engineering teacher to make a model airplane of your own."
"Pfft."
Laughter came from nowhere, breaking the curious atmosphere in the classroom.
Ou Zhiyuan restrained his smile slightly, and looked in the direction where the laughter came from, "Students, does anyone have any questions you want to ask?"
"Professor Ou, I have a question."
Bian Chenpei stood up and asked with a slight curl of his mouth: "You said that the future of model airplanes is infinitely bright.
Then, can this model airplane guard against spiritual power intrusion?
Can it resist mind attack?
Even if you don't talk about talismans and spells, I'm afraid it can't even resist the arrows on the battlefield, right? "
".Bian Chenpei, right?"
Ou Zhiyuan frowned, "Aeromodelling will not be used in war, and it has no direct competition with Feijian. The two focus on different things."
"Then it is used in the field of people's livelihood,"
Bian Chenpei asked: "How much is the talisman used by the model aircraft worth? What level of talisman master do you need to write it?
What level of Psychic manipulation is required?
If you enlarge the model aircraft to achieve the effect of carrying people and cargo you mentioned, how many times will the weight be increased?
Does it have to be written by Zhuxiao Realm Talisman every time it is used? "
Bian Chenpei's question caused many foreign students to have pondering expressions on their faces.
They were also surprised by the ability of the model airplane to hang in the air just now, but after thinking about it carefully, isn’t the power driving the model airplane still a talisman?
Fulu can only be written by a talisman teacher, and the energy and spiritual power of a talisman teacher are limited.
If a large aircraft model needs to consume Talisman,
Then what is the difference between the advantages Ou Zhiyuan mentioned and Feijian?
"this"
Ou Zhiyuan opened his mouth, and when he saw the Taihaoshan costume on Bian Chenpei, he immediately reacted.
Haotian Daomen didn't like the Neo-Confucianism studied in the Academy, and the current model airplane is a tool that can carry monks and even ordinary people in the sky.
Pious Haotian believers would not be willing to see flying machines all over the sky above the Taoist temple of Haotian.
Thinking of this, Ou Zhiyuan's rebuttal words also got stuck in his throat, unable to speak out.
"From this point of view, the so-called model airplanes in the Academy are nothing more than large-scale toys with strange skills and ingenuity. Carrying people and objects is nowhere in sight."
Bian Chenpei raised a winner's smile at the corner of his mouth, and was about to sit down.
"Oh, yeah?"
From the other end of the classroom, Li Ang's voice came.
(end of this chapter)