Nonrigid

Origami structures can be either rigid or nonrigid.

A nonrigid blimp carries all of its passengers within a gondola.

Both nonrigid ships nevertheless had strong metal monocoque envelopes which, while they maintained their shape uninflated, required an overpressure during flight.

The large number of trained crews, low attrition rate and constant experimentation in handling techniques meant that at the war's end Britain was the world leader in nonrigid airship technology.

The NS class (North Sea) were largest and most effective nonrigid airships in British service.

Unlike the rigid design, the nonrigid airship's gas envelope has no compartments.

With larger volume and increased passenger capacity, it is the largest manned nonrigid airship in China at present. citation.