One of the first decisions to make is what size balloon we need to buy. A smaller balloon will not be able to lift as much payload weight, but will cost less to buy and require less helium. A larger balloon will lift more weight, but will cost more to buy and require more helium.
 300g size balloon can lift a payload of 150g cost of balloon: £23 helium gas needed 0.84 cubic metres. cost for 1.81 cubic metre canister of helium £100 |  500g size balloon can lift a payload of 250g cost of balloon: £47 helium gas needed 1.29 cubic metres cost for 1.81 cubic metre canister of helium £100 |
The budget for the whole mission is £550.
The payload could contain a passenger (and platform) weighing 20g, a video camera weighing 80g, a tracker weighing 50g, a data logger weighing 36g and a payload box weighing 50g.
Should we use the 300g size balloon or the 500g size balloon? What do you think and why?
The payload could contain a passenger (and platform) weighing 20g, a video camera weighing 80g, a tracker weighing 50g, a data logger weighing 36g and a payload box weighing 50g.
Should we use the 300g size balloon or the 500g size balloon? What do you think and why?
