as a war craft? no. Something doing 40 knots airspeed going up against a jet doing 600+ knots aint gonna be pretty. one small burst from a radar assisted 30mm aircraft guns gonna make it turn into a ball of flame. an AAMRAM or similars just gonna destroy it... not to mention SAM's and Flack as well...
As a civilian 'airborne cruiseship' or heavy/medium slow traveling transport it might have some work... currently all we see zepplins doing these days is floating around with cameras advertising good year
![Razz :P](./images/smilies/icon_razz.gif)
as a blimp, not quite a zepplin for sure.
Lets face it, the zepplin is slow and delicate. I wouldn't want to fly one through a thunderstorm, or at 35,000ft in a jetstream with a 85 knot tailwind. I'll stick to the 747-400 doing 480 knots, Mach 0.86 on the H airways. Flying from New York to London in 5 hours, instead of 5 days!