Symmetrical discus-shaped (lenticular) aerostat (a ‘flattened’ balloon).
The omni-directional shape avoids the need for SkyLifters to turn and face into wind, greatly simplifying the handling process for disposable payloads.
Even distribution of payload External, regular-spaced suspension lines avoid the need to build heavy and complex internal support structures, thereby lowering the cost of MRO, and helping to stabilise the aircraft.