product name：Electric flying saucer
cargo number：DX:104
package loading：packageloading袋
Product size：10*5*7.7*6
Single weight：0.15（KG）
loading box several：500(PCS)
box gauge：60*50*55
Flying saucer course presentation
飞碟的飞行的原理是采用了oneKind of叫做“旋转物body不平衡原理”In flight.This principle also changes the linear momentum of an object（Horizontal momentum）的oneKind of方法.
As is well known,On Earth,The motion of any object follows the law of momentum conservation.The UFO seems not to follow this principle,其实它是在遵循动量的另one个原理；That is the momentum transformation theorem.Theorem of Momentum Transformation：In the absence of an external object providing momentum,任何物body本身拥有的动量不管是角动量转化为线动量还是线动量转化为角动量,The value of momentum remains unchanged during the transformation process.This is the momentum transformation theorem.
Experimental purpose： 1.Understand the structure of flying saucers 2.Understand the principle of UFO flight-碟片离心force做功，This causes the disc to take off。
Experimental cognition：
Battery box：顾name思义，安loading固定电池的盒子，It is a battery power output device
直流"Motor"：It is composed of a stator and a rotor，A DC motor is an electric motor that converts DC electrical energy into mechanical energy。It is widely used in electric drive due to its excellent speed regulation performance
。Dc motors are classified into permanent magnets according to their excitation methods、Encouragement from others and self-encouragement3class，Among them, self-motivation can be further divided into concurrent motivation、Series excitation and compound excitation3Kind of。
Switch：接通和断开电源的loading置
Fan blade：显示离心force做功的显示部件
Wire：电荷载body
实验步骤：
1.Experiment preparation: Get to know the experimental equipment:Screw hole plate、Switch、Fan blade、Wire、"Motor"、Battery box、Screwdriver、Diagonal pliers。
Experimental Report：
质量只在one边,那么离心force也只在one边出现.When there is no relative motion with the rotating shaft,离心force等于向心force.And,The centrifugal force is no longer balanced,And towardsNMThe vertical direction.The direction is related to the initial state of the mass change.有one个单独的force,There will be impulse；In the absence of external resistance,All impulse is converted into momentum,Thereby converting the angular momentum of the object into linear momentum.Thus, work done by centrifugal force occurs.
The technological model mainly refers to the land,The sea,Empty model.Science and technology model activities integrate science and competition,动手和动脑为onebody,It is deeply loved by a large number of teenagers,Its main function is also to cultivate and enhance the comprehensive hands-on innovation skills and high quality of teenagers.Therefore,At the turn of the century.Deepen reform,大force提倡素质教育的新形式下,Actively carry out science and technology model activities,It is an effective measure for fully implementing quality-oriented education.
one Broaden one's horizons 丰富科学知识
Science and Technology model activities具有丰富的知识性,Take the nautical model for example:During the making of nautical models and the process of navigation,学生可以"UnderstoodThe ship为什么会漂浮 The ship是怎样保持稳定性的 螺旋桨为什么产生动force The ship怎样跑得快 "Titanic"Why didn't they sink immediately after being hurt and why couldn't they avoid the iceberg ……If one delves deeper,Students will come into contact with radio-controlled transmitting and receiving machines;"Understood(Or master)force,Density,"Gravity",Pressure,Magnetic field,The ship的构造,The structure and principle of an engine,Radio,Selection of materials……A lot of knowledge.There are many of them here"Textbook"Knowledge that is not available above but is often needed in life.This further inspires students about the inspirations that science and technology draw from animals,One can imagine boldly,并做one个科技模型吗 Some think of dragonflies and planes,鱼形联想到鱼雷等并能制作one些简易的飞机模型等.In this way, students will be exposed to it in the science and technology model activities,运用上各Kind of各样的知识,A lot of book knowledge has been supplemented,It broadened students' horizons,It has enriched students' extracurricular life,同时"Understood了更多的科学知识.
two Cultivate logic,思维能force
Science and Technology model activities,All participants are required to be dialectical in their thinking methods,"Wholeness和严格的Scientific nature."Though a sparrow is small,All the internal organs are complete".The small technological model is big,A real car,The ship,飞机按one定比例的缩小制作;它是one个整body,牵one发而动全身.
one架比赛留空时间的模型飞机,Both have to go through two stages: high-speed climbing and low-speed gliding,Adjustments to the climbing stage,主要是地拉force线和两半翼扭曲后的迎角大小的调整.Center of gravity position,机翼和平尾的安loading角及方向舵虽对飞机爬升的姿态也有one定的影响,But the changes in these parts,It directly affects the performance of the model during the gliding stage,Therefore, during the design and adjustment process,Comprehensive consideration must be given.,这两个阶段不同的受force情况和解决办法.For example"In the car,The ship,The strength of materials in the design and production of aircraft models,The selection of stiffness and weight is very careful,必须从two者中选one佳方案.Therefore,Science and Technology model activities,In terms of thinking methods, teenagers are required to be dialectical,"Wholeness,Scientific nature,否则one个小小的失误,This will cause the performance of the produced technological models to deteriorate or even lead to their scrapping.
It can be seen that a person's initial thinking begins with actions.The thinking characteristics of students are mainly in the form of concrete and figurative thinking,Thinking cannot be separated from images and actions,Students are in the operation activity,You should keep your eyes open,Get your hands dirty,You still need to use your brain to think,Speak out,使外部的操作过程与内部的wisdomforce活动中的辨证性,"Wholeness,Combine scientificity and other aspects organically,This effectively promoted the development of their thinking.
three 培养良好的习惯
Science and Technology model activities有利于塑造学生良好的个性,Cultivate students' strong willpower and pioneering spirit,And be meticulous and patient,Form a scientific attitude of being rigorous in doing things, etc.
1,Arrange your time scientifically.Students are confronted with schoolwork and various interests,Specialty cultivation,都需要one定的时间和精force,Students must arrange their time scientifically and reasonably in order to be well-organized,Busy but not chaotic.
2,See things through from beginning to end.Nowadays, most students are only children,Afraid of hardship and lacking perseverance in doing things,Often give up halfway,If they choose activities that involve both hands-on and brainwork by themselves,让他们自己去想方设法来完成one件科技模型作product,兴趣又会高涨one些,因为他们都爱玩动force玩具,Approach the method from this perspective,It will also enable them to gradually overcome the inertia in the production process,And those who persevere in completing their masterpieces .This thus cultivated in them the habit of seeing things through from beginning to end.
3,Collectivist spirit.同学们one起设计,one起制作,one起比赛,Help each other from it,Compare with each other,Learn from each other.这样便培养了学生们的Collectivist spirit.Make students have others in their hearts,Learn how to get along with others.In this way under the conditions of a socialist market economy,才能与别人共创one番伟大的事业.像居里夫妇那样关起门来熬沥青的年代已经one去不复返了.Nowadays, society needs the cooperation of a talent group like the Apollo moon landing program to transform the world,Create the future.
four 激发学生探索科技领域的兴趣
one个科学家或发明家,There is no doubt that they have developed a strong interest in the things he loves,Then explore it,Study it,后在那one领域取得丰硕的成果.如今我们对学生进行科技模型的制作和组loading,让他们"Understood动force的形成,浮force的产生,Magnetic field的影响等,For their future interest in conducting research and exploration in this field,And lay a solid foundation,It also sowed the hope of success.
To sum up:Actively carry out science and technology model activities,It is the comprehensive implementation of quality-oriented education in schools,Cultivate students' morality,wisdom,body,beauty,All-round development of labor,Effective measures to enhance the comprehensive quality of cross-century workers and successors;Actively carry out science and technology model activities是贯彻,"Implementation《Several Opinions of the Central Committee of the Communist Party of China and The State Council on Strengthening Science Popularization Work》Mental and National Fitness Program,Fully implement what was proposed at the 15th National Congress of the Communist Party of China"Rejuvenate the country through science and education"Effective measures of strategy.
