Re: [Paparazzi-devel] StratoBlimp, a challenging UAV project

[Hector Garcia de Marina]

On Tue, Nov 20, 2012 at 12:04 PM, Tilman Baumann <address@hidden> wrote:

On 20/11/12 08:55, Hector Garcia de Marina wrote:

Also remember that the air density is low at those altitudes, therefore the "free fall period" (or lets say the control over your vehicle is minimum) must be designed for do not let the UAV spins at high velocities. Also you will reach a really high speed, the fuselage must be really well made for preventing fluttering, probably staying only at 3Kg as maximum could be an issue to solve.

This guy gets away with it on the cheap with simple foam wings.
http://www.gpsboomerang.com/content/view/34/42/

Perhaps spaceship one style feathering would make sense.
Not necessarily as a hinged wing. Maybe just with a piece of foam or a drogue chute that can be detached once lower speeds are reached.

Looks great Tilman, thanks for the link.

 

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Héctor