Scalability of Skysails, an outsider point of view

A publication was evoked here. I put again an excerpt of:
Ram-air Wing Design Considerations for Airborne Wind Energy * DOI: 10.1007/978-3-642-39965-7_31. Page 532:

A prime example of the scaling process is documented nicely in the X-Fly family
of Ram-air precision cargo delivery systems from Airborne Systems North America
[9, 11]. The development originated as an Advanced Concept Technology Demonstrator
research program from Natick Soldier Systems, whereby iteratively heavier
weight requirements were levied (0.25 ton, 1 ton, 2.25 tons, 4.5 tons, 13.5 tons, and
finally 19 tons). The wing sizes were 36 m2, 102 m2, 250 m2, 350 m2, 900 m2,
and 1,040 m2, respectively.

This example concerns heavy RAM designs which lead to a mass penalty, although far lesser than for a rigid kite.

Now some information of the weight of a 200 m² kite by SkySails on:

The weight of the kite depends on its size. A 200 m² kite weighs about 50 kg.

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