Does anyone know how i can build a mini flying zeppelin?

i have a science fair coming up soon and i would really like to build a mini zeppelin. i did a lot of research and all answers i got were to build a really big aircraft so any ideas you have would help.
Thanks in advance !
TheMacyC !

You can try something: wire controlled, based on a paper balloon (those people launch in Asia), or use one of those are sold on amusement parks.

But it's always better to take a look at the community
Kiteman4 years ago
Look at the "related" column to the right of the page - at least two of them do what you want.
FoolishSage4 years ago
Don't try to go too small. The smaller you go the smaller the volume of lift producing gas will be and thanks to the square cube law it means that it gets harder and harder to carry things like the envelope and the electronics. As a rule of thumb I think a cubic meter of uncompressed helium can generate at most 800 grams of lift (theoretically a perfect vacuum could create 1kg of lift)