#1 Five-lobe envelope
A blimp envelope equipped with a proprietary pressure control system (PCS TM ) provides the lift and the aerodynamic performance of the NATAC shuttle. With such a design the NATAC airship uses 4 times less Helium than traditional airships to transport 30 tons.#5 100% hydrogen compatibility
NATAC is designed so as to switch from helium to hydrogen as carrier gas. When hydrogen
becomes more widely available, it can also be used to propel the NATAC engines.
Would it be a good Kytoon (kite balloon)?
If yes, all that remains is to wait for the return of the hydrogen to suspend a wind turbine protected by an inflatable ring, hoping a tethered Voliris is stable enough.