The US Navy had five rigid airships, each met with different fates - most cruelly, all but one crashed. Using helium as opposed to hydrogen, these airships had potential advantages, quite the ...

Reviving an early 20th-century ambition, an experimental airship debuted at Moffett Field ... Pathfinder 1 is a dirigible. It has a rigid framework, made of welded titanium hubs and carbon fiber ...