Parachute working principle demonstrating device

Abstract

The invention relates to a demonstration device for the working principle of a parachute. Including base, circular groove, LED light strip, fan, horizontal circular hole, speed control knob, vertical circular hole, electric control board, DC power supply, cylindrical glass container, parachute model, counterweight, Supporting feet; the base is cylindrical, and a circular groove is designed on the edge of the upper panel for placing a cylindrical glass container. The fan is connected to the electric control board through wires, and the electric control board is connected to the fan switch and DC through wires. Power supply, the umbrella surface of the parachute model is made of thin plastic cloth, which is connected to the counterweight below by the umbrella line. The beneficial effects of the present invention are as follows: turn on the fan switch, adjust the speed control knob, demonstrate that the wind force increases, the parachute model rises, and finally hangs in the air; it can also demonstrate that the weight of the counterweight decreases, and the parachute model rises; and finally reaches a stable equilibrium state ; It can also demonstrate that the height of the parachute model is different at different wind speeds.

Description

technical field [0001] The invention relates to a scientific teaching aid, in particular to a demonstration device for the working principle of a parachute. Background technique [0002] In the science courses of primary and middle schools, it will involve imparting the knowledge of the working principle of the parachute. The traditional teaching method is to explain its working principle with molecular kinetic theory knowledge by watching pictures, and it is impossible for students to watch how the parachute works stably at close range. This cannot cultivate students' observation ability and practical ability, especially explaining how the wind speed changes, the counterweight changes, and how the parachute moves. It is difficult for students to understand the relevant knowledge without personal experience, so it is necessary to invent a working principle of the parachute Demonstration device. Contents of the invention [0003] In order to overcome the deficiencies of th...

AI Technical Summary

Problems solved by technology

[0002] In the science courses of primary and middle schools, it will involve imparting the knowledge of the working principle of the parachute. The traditional teaching method is to explain its working principle with molecular kinetic theory knowledge by watching pictures, and it is impossible for students to watch how the parachute works stably at close range. This cannot cultivate students' observation ability and practical ability, especially explaining how the wind speed changes, the counterweight changes, and how the parachute moves. It is difficult for students to understand the relevant knowledge without personal experience, so it is necessary to invent a working principle of the parachute Demonstration device

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