I never knew they used rocket fuel to waterproof the Hindenburg. Most likely back then, rocket fuel was highly refined kerosene
Actually, back then rocket fuel was highly concentrated hydrogen peroxide.
According to a documentary on The Learning Channel a couple years back, the rubbery substance they slathered all over the Hindenberg to waterproof it was startlingly similar to modern solid rocket fuel. The theory is that static electricity acquired during landing sparked somewhere in the external structure, igniting the rocket fuel.
Did you know that the clouds and rainwater have a natural form of hydrogen peroxide in it ? Yes, I know they uses to use, or still do use a highly concentrated hydrogen peroxide in rocket fuel , but, it is very unstable.