Really cool. Thanks for sharing.
I*m working on a DC3 Douglas scale model, but that one is going to have a start weight at about 5-6000g. Maybe I need some Helium too....
If someone calculates the volume of the body and the weight of air of that volume vs. what helium of that volume would weigh then I'm not so sure about the helium. I saw the claims in the youtube comments, but those were all from viewers. Helium isn't some magical antigravity stuff.
If someone calculates the volume of the body and the weight of air of that volume vs. what helium of that volume would weigh then I'm not so sure about the helium. I saw the claims in the youtube comments, but those were all from viewers. Helium isn't some magical antigravity stuff.
I estimate it would give a couple ounces of lift. No reason not to use helium, whatever the amount of lift it provides, it would be helpful.
More amazing indoor airplanes, 3-gram microfilm types. These fascinated me as a kid. I built lots of outdoor rubber band models and towline gliders, but microfilm was too fragile, I tried!
Nice animated model airport. Jump to 3:00. And keep watching. All the vehicles are little self-contained self-recharging robots. Pretty cool stuff. Operates 10 hours a day continuously in the Hamburg museum.
Comments
Edit: I guess so, 2.1M long, 2M span, 9 servos and yet just 285g!
I*m working on a DC3 Douglas scale model, but that one is going to have a start weight at about 5-6000g. Maybe I need some Helium too....
-Tor
I estimate it would give a couple ounces of lift. No reason not to use helium, whatever the amount of lift it provides, it would be helpful.
Hydrogen gives 9% more lift than helium but I can tell you from personal experience, there is at least one minor drawback.
https://www.youtube.com/watch?v=_3VjXcErtX8&t=563
But just one "rotor" here, sorry for the hijack.
http://www.decodedscience.com/helium-shortage-situation-update-one-year-later/42314
When it's gone it's gone.
Helium is very much more expensive:
http://www.academia.edu/4065209/HYDROGEN_AIRSHIPS_A_NECESSARY_RETURN_BECAUSE_OF_HIGH_COSTS_OF_HELIUM