Power to space use ratio

[PierreB]

@blimpyway

empirical data

On the referenced website (below) there is no “empirical data”. There is “empirical correction” with a formula.

Glauert correction - Ashes Documentation

@blimpyway

The reason Betz computed thrust coefficient failes above 0.5 value of axial induction factor is that leads to negative wind speed downwind, which is impossible

I asked a question about this statement, without any convincing answer on the topic in question:

Betz limit and power available in the wind

Could someone provide a reference and/or reasoning to support this statement?

Let @blimpyway prove his “theories” supposedly refuting the document entitled The Betz limit applied to Airborne Wind Energy and Betz’s law here and there and elsewhere. For that a peer-reviewed publication would be better than unnecessarily cluttering (to remain polite) the two topics in question: Betz limit and power available in the wind and the current topic entitled Power to space use ratio.

Now back to the topic.