n7axw wrote:TN4994 wrote:Weight may still be a factor. We'll have to consult with the Imperial College about air density, wind currents (also what we call jetstream), etc. Does our online librarian have a contact who can enlighten us?
My point was that the balloon is being held up be whatever gas is being used at the time-- hot air, hydrogen, etc. So gravity would be accounted for. What would remain would be the inertia the propeller would be pushing against. The smaller the balloon, the less inertia and the easier the prop's job.
It would seem to me that my proposal would be lighter and simpler than a piston steam engine which might make it suitable for this application.
Don
To those who are aware of Rocky & Bullwinkle, it might behoove someone to find a source of Upsidasium.