Here’s the original JOEY airship as built by or for Cargolifter of Germany. 
It was sold for under $20,000 at their bankruptcy sale, and my job in Malaysia was to rebuild it so that it would fly CORRECTLY.
Cargolifter JOEY with the first planned modification of moving the engines to the tail fins, from 2007. Notice the planned bias tapes to help control envelope sag, which was excessive even before the modified fins. I ended up moving the fins forward, increasing the lower fin size with a new fin base section, and reducing the upper fin size, with no rudder.
