One model airplane propulsion system I used on a balsa glider was Jetex. It was a small aluminum can that a pellet of fuel was placed inside then the can was closed with a lid that had a hole out the back. In the hole was a wick that was lighted then when the pellet burned it made thrust with a loud HISS. The airplane disappeared and might have caught on fire and burned away in the sky.
I have heard that Chinese lanterns have caused fires. I saw one flying along with a fire burning inside causing it to rise.
I have heard that Chinese lanterns have caused fires. I saw one flying along with a fire burning inside causing it to rise.