Why can I land safely with a parachute? What is the principle?

The principle of parachute is to increase the air resistance when people fall freely by expanding the umbrella surface, thus reducing the speed of people falling and reducing the probability of people being injured and landing safely. Parachute is a very great invention, widely used in aerospace, rescue, extreme sports and other fields.

First, the principle of parachute We can analyze the principle of parachute through Newton's second law. When a person falls through a free fall, the speed will be very fast. If you open the parachute at this time and increase the air resistance, then the force on people will change, the downward resultant force will decrease and the falling acceleration will also decrease. Once the acceleration is reduced, the falling speed of people will gradually form a buffer, and when landing, it will reach the speed that people can bear and reduce people's injuries.

Second, the characteristics of parachutes Parachutes are relatively large, with a main umbrella and a spare umbrella. Its structure includes an umbrella coat, an umbrella rope, an umbrella belt, an umbrella opener and an umbrella bag. When a person needs to open an umbrella in an emergency, he should first pull the rope of the parachute opener in time to make the parachute open quickly, and then gradually control the direction of the parachute, so that the speed of the person will gradually slow down during the descent and finally land safely. ?

Thirdly, the application of parachute is a great invention, and its invention is of great significance to aerospace and emergency rescue. For example, when an airplane has an accident, skydiving can be used to save the lives of the crew and others. For example, it can also be used for rescue. When the Wenchuan earthquake just happened in 2008, the mountain road was impassable and rescue officers and soldiers could not enter the epicenter. So 15 large airborne soldiers bravely opened the rescue channel through skydiving, and they got the first-hand news of the epicenter.

Therefore, the principle of parachute is essentially Newton's second law, which is a law learned in high school physics. Friends, is there anything you don't know about the principle of parachute? Welcome to leave a message and let's discuss it together.