Burstmode
lvl.4
Flight distance : 258379 ft
United States
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I suggested that ("helium bladders") upthread. Only half-seriously. Well, maybe quarter-seriously.
I have not cracked open a drone to see how much unused space there is inside. My guess (based on looking at it from the outside) is, there's not much "empty" space inside, but there's some. Probably not enough to make much of a difference if you filled those empty spaces with a buoyant gas (helium is a better choice than hydrogen - remember The Hindenburg), but you know, we are just talking about a few grams here and there, if you could gain a net total of 5 to 10 grams less weight by adding gas-filled "bladders" it might be a win. But it would add a lot of complexity to the build process to add those internally (you would need to find multiple small "empty" spaces -- eg inside sections of the arms, and it would require some kind of thin "bladder" containers, so would add at least a little weight), so it probably doesn't make economic sense -- the Mini can carry itself already, and not everybody needs or wants extra payload capacity (for strobes, prop guards, whatever). A lot of effort for a very small gain, and the effort would cost everyone money but only benefit a relative few.
A more realistic option might be (for a third-party) to add a single, larger-capacity external helium-filled bladder (maybe attached to the belly; it would require extended langing "legs" but that's easy enough). Someone with more interest than me would have to run the numbers on how much lifting power that helium (or other non-flammable bouyant gas) could bring and how large a space that would require...think about how large a helium balloon is...maybe an aerodynamically "teardrop-shaped", grapefruit-sized helium bladder that snaps on the belly could be workable, I dunno. Just thinking outside the box.
Those little "bubbles" on the artwork may just be decorative...but it's entertaining to imagine the possibilities while we wait.
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