If the material can’t expand or be folded ... maybe size them to fit "the box" & use more of them ... vent expanding gas to additional containment tanks made of the same special material... and locate them in the body / tail sections. I think they’d have to have the photo cell / self producing energy system in place at this point though. If, the Argus design is still based on the Blau gas filling the body / tail sections the above mentioned wouldn’t work. imo
“In my thought I have seen ring’s of smoke through the trees,
And the voices of those who stand looking.
Ooh, it makes me wonder,
Ooh, it really makes me wonder.”
“Stairway To Heaven”...Led Zeppelin IV