Blimp airship and solar calculations

If one has seen the adaptable photovoltaic foil of Sharp just on a photovoltaic fair and sees all at once a Blimp, one catches of course immediately to calculate.

If we accept sometimes such a Blimp would have 15 ms of diameter and a cw value of 0.12. With it are required for 50 kms / h about 36 kW.

If thus 500 ms ² surface are pasted with a light photovoltaik foil, the Blimp can be moved during the day almost always with the solar energie. 500 ms ² surface should deliver with vertical irradiation more than 50 kW, but with sloping incidence of light just at least 36 kW for 50 km/h.

If we accept, these 500 ms ² would cause an additional weight of 1 metric ton. 36 kW can be generated with about 9 kg of fuel per hour in a modern diesel engine. Kilogram, not liter! After 111 sunny flight hours the photovoltaic has already saved 1 metric ton of fuel.

A big advantage for action in remote areas where the fuel must be transported only laboriously.