This week, I spoke to a “balloonist” whose hobby of hot air ballooning will hopefully inform us more on the idea of using hot air balloons, and the kinds of things we should be thinking about. Though it’s not the same thing (he balloons at a scale of hundreds of pounds) there’s tons to learn from his informative e-mail. This advice will be critical when we consider the design of our balloon. His email is pasted below.
What I took away from this at first: we need a rigid, lightweight structure to the balloon in order to prevent collapse in windy Iceland. We should really consider using pressurized gas burners, they make a lot of heat and we need a lot of heat. Lastly, we need some seriously heatproof materials, which are also leak-proof. I hope to identify what kinds of materials we will use this week, but it may be more prudent to figure out the design of our balloon first. The design may largely be determined by the following factors: weather (wind speeds at different altitudes, precipitation) and buoyancy needs (weight of balloon, tether, burner, camera/arduino etc).