Little more detail: > As a unique part of the design, 60% of the lift is produced aerostatically by being Lighter-Than-Air and a further 40% lift is generated

Little more detail: > As a unique part of the design, 60% of the lift is produced aerostatically by being Lighter-Than-Air and a further 40% lift is generated aerodynamically by having a wing-shaped hull. The engines can be rotated to provide an additional 25% of thrust up or down, to help landing, take-off and hover.