jackmac wrote:My dream is to one day create self powered flying machine. If i wanted to learn everything that you would need to create a human-powered aircraft. What areas would you recommend studying? like an example curriculum.
jackmac wrote:Appreciate the responses guys! Im definitaly going to look into the Albatross wiki. Ah ye helium balloon! i like it. Imagine a spring you can charge up on the ground that slingshots you from launch, then solar powered from there.
jackmac wrote:I wonder if any progress was made on the albatross? after crossing the english channel and winning that prize they were probably satisfied. Do you know how the engergy from the pedals was translated to the propeller? I looked into the energy generated from pedals and it didnt look consistent i assume it wouldnt work well with a propellers speed jumping up and down. I read somthing somewhere leonardi da vinci had plan for a machine that worked off a persons legs kicking, seems like a more natural way to get energy out of human movement. I spose the running motion with swinging arms is the most natural human movement, but how to extract energy from that efficiently.
LH707330 wrote:Bottom line: humans have too poor a power/weight ratio to cycle fly to any realistic altitudes.
planewasted wrote:A human powered blimp would be cool. No effort for staying up in the air required. You could fly around with little effort and enjoy the view. But a quick calculation gives that a 6 meter diameter sphere would be required to lift 120 kg of blimp and human. Would turn out pretty wind sensitive. And helium is expensive.
flyingturtle wrote:LH707330 wrote:Bottom line: humans have too poor a power/weight ratio to cycle fly to any realistic altitudes.
Aww, this reminds me of the ornithology lectures I attended years ago. They used similar calculations to show that the weight limit of flying birds is at 15 kilograms. Above that, it is not efficient to fly. Swans and wild turkeys are hitting that limit. All heavier birds are flightless.
Sokes wrote:Maybe 10 m wingspan and anywhere between 70-200 kg:
flyingturtle wrote:Sokes wrote:Maybe 10 m wingspan and anywhere between 70-200 kg:
Birds != Pterosaurs
Birds are homeothermic, and their feathers have the other crucial function of thermal insulation and regulation. If you can do away with feathers (which uses up a lot of nutrition to begin with), you can go for an extremely thin bat-like wing. The availability of food is another issue.
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