Balloon rocket

A balloon launcher is filled with air (or other gas) balloon. If necessary, some water may still be given in the balloon before inflating. It is started in which you let go of the opening of the balloon. Due to the recoil of the outflowing gas it is being driven. The altitude of a few meters.

The balloon rocket has no technical meaning. It is often used as a cheap and harmless device for demonstrating the recoil drive.