The sky lantern was invented by the Chinese by at least the 3rd century AD. Constructed from paper and a small fuel source, sky lanterns operated using the same principles as manned hot air balloons, well over a thousand years prior to the invention of the latter.
A sky lantern can get away with a lot more errors. If it breaks that’s okay. When a hot air balloon breaks someone dies.
A sky lantern can get away with a lot more errors. If it breaks that’s okay. When a hot air balloon breaks someone dies.
Funny you should say that, the king of France initially wanted condemned criminals to be the first test pilots for that very reason.