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V1kt0r t1_iy84osv wrote

Reply to comment by [deleted] in Rolls-Royce successfully tests hydrogen-powered jet engine | Britain's Rolls-Royce said it has successfully run an aircraft engine on hydrogen, a world aviation first that marks a major step towards proving the gas could be key to decarbonising air travel. by yourSAS

Yes it’s true that hydrogen is mostly from natural gas, but that is still better than aviation-gas. Because av-gas is the only fuel that still uses lead.

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Spartanfred104 t1_iy85myp wrote

Long haul transport ships also still use leaded fuel.

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V1kt0r t1_iy868x5 wrote

I didn’t know that. Thank you u/spartanfred104. Is it only the “dirty fuel” they use on the open sea that have lead or do the “clean fuel” they use in ports also have lead?

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BenadrylChunderHatch t1_iy89b1k wrote

Avgas is used for propeller engine planes, which are mainly flown by hobbyists in rich countries, meaning it's use is not very large scale.

Commercial aviation mainly uses turbine engines powered by Jet fuel, which is not leaded but we burn a lot more of it.

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