Experiment hot air balloon
A technology of hot air balloons and balloons, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve problems such as insecurity and balloon threats, and achieve the effect of simple materials, saving open flames, and convenient production methods
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[0011] In conjunction with embodiment and accompanying drawing 1,2, the present invention is described further:
[0012] According to the structure of attached drawing 1, cut the plastic film into 8 pieces with arcs on both sides and two pointed ends in the middle, glue them together with tape to make a balloon, leave a round hole at the bottom, roll the paper into a cylinder as a guide For wind use, the size of the cylinder can just fit into the round hole left at the bottom of the balloon. The concrete size (accompanying drawing 2) of the balloon of making is: D 1 ф850mm; D 2 ф600mm; D 3 ф70mm; H is 1000mm. During the experiment, a 220W hair dryer 3 was used to blow hot air into the balloon 1 from the air guide cylinder 2. After the balloon 1 was filled with hot air, the hair dryer 3 and the air guide cylinder 2 were removed, and the round hole at the bottom of the balloon 1 was sealed, and the balloon 1 was ready. It will turn into a hot air balloon and rise slowly, leavin
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