Indeed - relatively few people are put off from air travel by pictures of airliners enveloped in flames, as in the recent crash at Sheremetyevo.
I once imagined a "double-bagged" airship, in which the bulk of the lift is from hydrogen held within a shell of helium. I also wondered about a non-flammable hydrogen-helium mix, but it would apparently have to be mostly helium. I would guess, however, that modern developments in strong antistatic films and hydrogen detectors would make pure-hydrogen airships safe from fire.
I once imagined a "double-bagged" airship, in which the bulk of the lift is from hydrogen held within a shell of helium. I also wondered about a non-flammable hydrogen-helium mix, but it would apparently have to be mostly helium. I would guess, however, that modern developments in strong antistatic films and hydrogen detectors would make pure-hydrogen airships safe from fire.