Bob, thanks for the DD. I have come to the conclusion that they have souped-up the Airchain-Skydragon for the ongoing tests. Even in the new web site we have a combination of photos posted from older-latest configurations.
There is a two propeller engine for every airchain section. Either 3 or 4 sets of propellers (i.e. 6 to 8 propellers). The structure of the airship allows for this since inception.
But they must have improved power management (increased energy supply over time)and composite materials performance (lighter combination).
This way they can take on the jet stream........... and set a new record.
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