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Product Name: Electric Floating UFO

Item No.: DX:104

Package: Packaging bag

Product dimensions: 1.0*5.0*7.7*6

Weight per unit: 0.5 (KG)

Number of boxes: 500 (PCS)

Box Size: 60*50*55

Floating UFO Course Presentation Materials

The principle of the UFO's flight involves using what is known as the "unbalanced motion of rotating objects" mechanism. This principle is also a method for changing the linear momentum (horizontal momentum) of an object.
As is well known, on Earth, the motion of any object follows the conservation of momentum theorem. While UFOs seemingly do not follow this principle, in reality, they adhere to another principle of momentum: the momentum transformation theorem. The momentum transformation theorem states that when no external object provides momentum, the momentum possessed by any object itself—whether it is converted from angular momentum to linear momentum or vice versa—remains constant during the transformation. This is the momentum transformation theorem.

Experimental objectives: 1. To understand the structure of UFOs 2. To understand the flight principle of UFOs - the disc generates work due to centrifugal force, causing the disc to take off.
Experimental Cognition:
Battery case: As the name suggests, it is a case for securing and installing batteries, serving as a battery power output device

DC motor: Composed of a stator and a rotor, a DC motor is a motor that converts direct current electrical energy into mechanical energy. It is widely used in electric drive systems due to its excellent speed regulation capabilities.
. DC motors are classified into three types based on excitation methods: permanent magnet, separately excited, and self-excited. The latter is further divided into three subtypes: parallel excited, series excited, and compound excited.
Switch: Devices that turn on and off the power supply
Wind blade: The display component that shows the work done by centrifugal force
Conductor: Charge carrier

Experimental procedures:
1. Experimental preparation: Identify the experimental equipment: screw hole plate, switch, fan blade, wires, motor, battery case, screwdriver, and diagonal pliers.

Experiment Report:
The mass is only on one side, so the centrifugal force also appears on one side. When there is no relative motion with the axis of rotation, the centrifugal force equals the centripetal force. Moreover, the centrifugal force is no longer balanced and acts in the perpendicular direction to the NM. The direction is related to the initial state of the mass change. Where there is a separate force, there is an impulse; without external resistance, all the impulse is converted into momentum, thereby converting the object's angular momentum into linear momentum. Thus, the centrifugal force does work.

Technical models mainly refer to land, sea, and air models. Technical model activities combine science and competition, hands-on work with mental activity, and are highly popular among young people. Their primary purpose is also to cultivate and improve young people's comprehensive practical innovation skills and high quality. Therefore, at the turn of the century, under the new forms of deepening reforms and vigorously promoting quality education, actively carrying out technical model activities is an effective measure for fully implementing quality education.
1. Broaden horizons and enrich scientific knowledge
The science and technology model activities offer rich knowledge. Take marine models as an example: during the creation and operation of marine models, students can learn why ships float, how they maintain stability, how propellers generate power, how ships move quickly, why the Titanic did not sink immediately after being damaged, and why it could not avoid icebergs... If they delve deeper, they will encounter radio remote control transmitters and receivers; they will understand (or master) concepts such as force, density, gravity, pressure, magnetic fields, ship structure, engine design and principles, radio technology, and material selection... There is much knowledge that is not covered in textbooks but is frequently needed in real life. This also inspires students to consider how scientific and technological ideas come from animals, enabling them to imagine boldly and create science and technology models. Some think of dragonflies and airplanes, while fish shapes lead them to think of torpedoes, and they can make simple airplane models. In such science and technology model activities, students engage with and apply various types of knowledge, supplementing textbook knowledge, broadening their horizons, enriching their extracurricular life, and gaining more scientific knowledge.
2. Cultivate logic and thinking abilities
Technology model activities require all participants to adopt a dialectical, holistic, and strictly scientific approach in their thinking methods. “Although small, a sparrow has all its organs.” The small technology models are actually large-scale replicas of real vehicles, ships, and airplanes scaled down to a certain ratio; they form a whole, where changing one part affects the entire system.
A model aircraft that uses the reserve time during a competition must go through two stages: high-speed climb and low-speed gliding. The adjustment during the climb stage primarily involves modifying the ground force line and the angle of attack after the wings are twisted. While the center of gravity position, the installation angles of the wings and tailfin, and the rudder also affect the aircraft’s climb posture, changes in these areas directly impact the performance during the gliding phase. Therefore, comprehensive consideration must be given to the different forces and solutions in these two stages during design and adjustment. Additionally, in the design and production of vehicles, ships, and aircraft models, the selection of material strength, stiffness, and weight is very careful, and one optimal option must be chosen from these three factors. Thus, for technology model activities, young people are required to adopt a dialectical, holistic, and scientific approach; otherwise, even a minor error can degrade or even render a technology model ineffective.
It can be seen that a student’s thinking begins with actions. Students’ thinking characteristics are primarily based on concrete imagery thinking; their thinking cannot be separated from images and actions. In operational activities, students must not only use their eyes and hands, but also use their brains to think and speak. This integrates the external operational process with internal intellectual activities in a dialectical, holistic, and scientific manner, effectively promoting their cognitive development.
3. Develop good habits
Technology model activities help develop good personalities in students, cultivate their perseverance and pioneering spirit, as well as their attention to detail and patience, and foster a rigorous scientific approach to work.
1. Scientific time management. Students face homework and various interests, as well as the development of their strengths, all requiring certain time and effort. Students must manage their time in a scientific and reasonable manner to maintain order and avoid chaos despite being busy.
2. Finish tasks from start to finish. Nowadays, most students are only children. They fear hardship and lack perseverance in carrying out tasks, often giving up halfway. If they are given activities that require their own effort and thinking, allowing them to find ways to complete a technology model project, their interest will increase. Since they enjoy playing interactive toys, this approach can also help them overcome laziness during the production process and persistently complete their impressive works. Thus, the habit of finishing tasks from start to finish is cultivated in them.
3. Collectivist spirit. Students design together, produce together, compete together, helping each other, comparing with each other, and learning from each other. This fosters the collectivist spirit among students, making them consider others and learning how to interact with them. Only under the conditions of a socialist market economy can they collaborate with others to create a great achievement. The era when people like the Curie couple worked behind closed doors to extract沥青 is over. Now, society needs the cooperation of talent groups like the Apollo Moon Landing program to transform the world and create the future.
4. Stimulate students' interest in exploring the field of technology.
A scientist or inventor, who undoubtedly develops a strong interest in the things they love, then explores and studies them further, ultimately achieving significant results in that field. Today, we have students create and assemble technical models to help them understand concepts such as the formation of motion, the generation of buoyancy, and the effects of magnetic fields. This prepares them for future research and exploration in this area, establishes a solid foundation, and also fosters hope for success.