I mean, it’s kinda true. A rocket just makes fire which expands and pushes whatever it burns out to make it go fast. You got the fire, the fire pushes things away from whatever you’re burning and the rest is just optimisation.
If you manage to make a helium balloon that floats in the air, attach a burning log fire to the bottom of it and enclose it in a way that the air intake is on the top and outlet is on the bottom you’ve made an engine that you just need to aim with a ballast weight.
Still wrong, but you were onto something.








I think this is it. Posting is reinforced by getting feedback on posts, both up votes and comments