Preparation materials: paper cups, rubber bands and scotch tape.
1, put the bottom of the paper cup together and fix it with transparent tape.
2. Prepare a pile of rubber bands and tie them together in pairs to form a long string of rubber bands as the driving force for paper cups to fly out.
3. Tie the rubber band rope in the middle of the paper cup and pull it with your hand, and the paper cup will fly out.
Air robot
Aircraft refers to mechanical equipment that can fly inside and outside the atmosphere. They can be divided into two categories: fixed-wing aircraft and rotary-wing aircraft.
Fixed-wing aircraft, such as airplanes and gliders. It is characterized by fixing the wing and making the plane fly forward through the thrust generated by the engine. Aircraft is the most common fixed-wing aircraft, which is widely used in commercial aviation, military field and scientific research and exploration. Many factors need to be considered in the design and manufacture of aircraft, such as aerodynamics, material science, mechanical engineering and so on. With the progress of science and technology, the performance of aircraft is constantly improving, the range is getting farther and farther, and the passenger capacity is getting bigger and bigger.
Rotorcraft, such as helicopters and unmanned aerial vehicles, is characterized by generating lift by rotating wings. Helicopter is an aircraft with vertical take-off and landing capability, which can hover in the air, move back and forth, and is widely used in military, medical rescue, tourism and other fields. Unmanned aerial vehicle (UAV) is a kind of aircraft that has developed rapidly in recent years. They can perform various tasks, such as aerial photography, logistics distribution, agricultural spraying and so on. The development of UAV benefits from the progress of electronic technology, communication technology and automatic control technology.
The development of aircraft can not be separated from the hard work of aviation engineers. They need to study the structural design, power system and control system of the aircraft to ensure the safety and reliability of the aircraft. The operation of aircraft also needs strict air traffic management and air safety measures.
As an important vehicle and scientific research tool, aircraft has played an important role in promoting the development of human society. With the continuous progress of science and technology, we can expect more innovation and application of aircraft in the future.