Air density for winged human flight?

How dense would the atmosphere of a theoretical planet have it be, in relation to Earth's atmosphere, to fly with, say, a 10 to 15 foot wingspan? Math is acceptable and encouraged, and a set of artificial wings is assumed. I'm thinking an incredibly tough (fictional) plant fiber spread over a carbon composite frame. When not in use, it could be folded into a school backpack-size with convenient support straps so that it can actually be WORN like a backpack. It can also be taken completely apart to be stored in a large pack with other equipment. It's got a joint system for flapping, but not with all the minutiae of a real bird wing, so you'd have to angle your arms on the upflap. It will also have footholds for when in flight.

posted over 9 years ago

Jetscooters‭

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