Failed product: Balloon helicopter that cannot fly

Bill of materials:

1、Center base *1

2、Connector between base and balloon bushing *1

3、Balloon bushing *1

4、Propeller *3

Installation steps:

1、Insert the connector into the base. A bit of force is needed here to ensure a tight fit and prevent the connector from loosening later;

2、Install the blades, align them, and press them in firmly (this is easy to do)

3、Thread the balloon through the balloon bushing and onto the bushing;

4、Inflate the balloon, pinch the air hole, and insert the bushing into the connector; (A word of caution: do not release the air hole during this process)

5、Lift it as shown in the figure. Once the blades start spinning, release it~

【Notes】: Despite multiple adjustments and calculations, it still failed to take off due to likely weight issues. The file is for reference only!