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Zeppelins primarily used hydrogen as their lifting gas, which provided buoyancy due to its lighter-than-air properties. However, hydrogen is highly flammable, leading to safety concerns. In some later models, helium was used as a safer alternative due to its non-flammable nature. The propulsion systems of Zeppelins typically relied on internal combustion engines running on various fuels, including gasoline or diesel.

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2w ago

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