The Hindenburg blew up because the pilot ordered a 90° turn to port (or starboard, I don't remember now), causing a main steel beam to break from the stress and puncture one of the 16 Hydrogen tanks, leaking Hydrogen into the hold.
When the mooring ropes were lowered, and a connection was made to the ground, this sent an electrical charge up the rope to the outer skin of the craft, which then sparked inside the hold from the outer skin to a metal rod inside the hold.
A spark that went right through the Hydrogen gas leaking out.
Somewhat like the power stroke of an internal combustion engine, but w/o the compression.
The result is on Youtube for your viewing disgust.
What brainacs would even suggest filling 16 tanks with Hydrogen, for crying out loud?
Scientists would ... of course.