Hi, since my maglev launch track for suborbital space tourism is too expensive to make, I decided to come back to earth and build a little one person blimp for ordinary eco-tourism! Great idea, isn't it? Can you imagine yourself on holiday in an exotic country, exploring lush rainforests, islands, deserts, savanna's, valleys or canyons? Yes you can. But the one thing you've always wanted to do is to explore these landscapes from the sky. Hiring a helicopter is too expensive, ballooning is noisy and you don't know where you'll end up, and using a small airplane limits the experience. So here we are: a tiny one person blimp, which moves slowly over the landscape. Perfect for eco-tourism, don't you think? Now since I'm extremely lazy and I don't know a lot about physics or engineering, I ask you to help me. Thanks in advance. What I want the blimp to be is: -silent >> so electrically powered (a battery array weighs a lot, but we're renting out for one hour trips); the batteries can be recharged by solar power, excellent for use in off grid communities (say, in the Kalahari desert) -fly at slow speeds, say maximum 30km/h >> what kind of a motor would I need? -easy to operate >> so I need some kind of fly by wire system which allows the tourist to fly freely, but which puts him back on track if he comes too close to rocks or trees, and so on -able to land and lift off anywhere >> so the thing needs a big airbladder of say 100m³, in order to control buyoancy. Is this a big design challenge? Or can it be done fairly easily? I really think there's a market for such one person blimps. Tourists are willing to try anything, as long as it looks fun and safe. And leisure flying is the only thing we're missing in general tourism (you have leisure boats, bikes, cars and kayaks, but no blimps). Thanks for your comments and for helping me designing it!