Dirigible
Structure: carbon fiber rods / connectors. Source
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A envelope with a diameter of 48″ and a length of 120″ has a volume of 14 cu m, and a lift capacity of:
H2 — 14 kg.
Required thrust to stay on station at 100m, 1km?
Typical wind speeds: 10 knots
Target airspeed capacity: 20 knots
Newton’s Drag Law:
F = ½ *Ï*C*A*V2 where
F is the drag force
Ï is the density of the fluid (air)
C is the drag coefficient
A is the reference area for the calculation of C
V is the airspeed