Here are the key factors that contributed to the disaster:
1. Hydrogen Gas: The Hindenburg was filled with hydrogen gas, which is highly flammable and has a low ignition temperature. Hydrogen is lighter than air, allowing the airship to float, but it is also more combustible than other gases like helium.
2. Electric Spark: The exact source of the spark that ignited the hydrogen is not known with certainty, but several theories have been proposed. It could have been caused by electrostatic discharge, a spark from the handling of the mooring ropes, or a spark from the engines or other electrical equipment on board.
3. Lack of Shielding: The Hindenburg's gas cells were not adequately shielded from potential sources of ignition. The outer fabric covering of the airship was not flameproof, and there was no protective layer between the gas cells and the electrical systems.
4. Weather Conditions: The weather conditions on the day of the disaster were also a contributing factor. The air was humid, which increased the risk of static electricity buildup. The airship was moored to the mast in a way that exposed it to strong winds, which put additional stress on the structure and increased the chance of a spark.
As the Hindenburg was preparing to dock in Lakehurst, New Jersey, on May 6, 1937, a spark ignited the hydrogen gas, causing a rapid and catastrophic fire. The flames quickly engulfed the airship, destroying it within minutes and resulting in the loss of 36 lives.
Following the Hindenburg disaster, significant changes were made in airship design and safety protocols. Helium, a non-flammable gas, replaced hydrogen as the lifting gas for airships, and additional precautions were taken to prevent sparks and potential sources of ignition.