Whether its a natural-disaster like an earthquake or otherwise inaccessible area, getting medical supplies on-site in the hour of need can be challenge. Drone can go where road network is not functional and there are plenty of places like that.. But drones spend most of the energy fighting gravity. Zero-g is a concept for GPS guided, gravity-neutral drone meant to carry critical supplies like medicines longer distances.
Helium is seems good choice for providing lift. Just looked a some calculations, these things won't be small ( for 1kg lift we need about 1.2 diameter balloon). Serious calculation needed to check effect of wind on such a large object.
Thinking of using existing drones in vertical orientation.
Looking for Bangalore based drone enthusiast to join the team, message us at openmeddev@gmail.com