Preparation materials: a match, a paper clip, a meat cleaver and a roll of tin foil. Cut off the matchhead with a meat cleaver, tear a piece of tinfoil with a width of 2cm and a length of 3cm, put the matchhead on the tinfoil, roll up the tinfoil, wrap the matchhead with tinfoil, seal the front, leave a hole in the back, and fold the paper clip into a launching pad. The lower the rocket is from the ground, the better. Plug the rocket into the power supply, light it on the rocket head, and you can fly.
Principle: Small rockets can generate recoil on the ground. Small rockets should be light, so they should be short. The lower the rocket is launched from the ground, the greater the force. At first, rockets were only used to set off fireworks during the Spring Festival. Modern rockets are jet propulsion devices, which use hot air to jet backward at high speed and use the generated reaction force to push forward.
rocket
Rocket (mbth) is an aircraft propelled by the reaction force generated by the rocket engine injecting working medium. It carries all propellants by itself, does not rely on external working medium to generate thrust, and can fly into or out of dense atmosphere, so it is a vehicle for space flight. Rockets are divided into sounding rockets and launch vehicles according to their uses. There are many kinds of rockets. The original rocket was an arrow that was attached to the bow and arrow head with a kindling object and then fired at the enemy to cause burning.