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It is surprisingly difficult to get pure hydrogen to burn. The DOE safety sheet [0] lists an upper flammability limit of 74% which matches my experience pretty
by japanuspus 3y ago
It is surprisingly difficult to get pure hydrogen to burn. The DOE safety sheet [0] lists an upper flammability limit of 74% which matches my experience pretty well. In other words: gunshots would most likely just cause leakage.
[0] https://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/h2_safety_fsheet.pdf https://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/h2_sa...
- quickthrower2 3y agoShooting the thing and watching it come down might be fun enough for some.
- kccqzy 3y agoBut what about after they leak? Wouldn't the hydrogen then mix with air and get below 74%?
- samtho 3y agoIf this is set up similar to other LTA airships (simplified, its bags of air contained by the outer skin with a structure supported by a very light airframe), then a wayward bullet might pierce one or two of these cells - which a certain number of these are allowed to deflate before problems begin. Also, most shot-sign mischief is carried out by shotgun and the max vertical distance it can travel is considerably less than 1000ft.
- ThomasLaporte 3y agothank you for the insight, that's very interesting
- TylerE 3y agoFuel, Oxygen, Spark. You need all three.
- sandworm101 3y agoIt is more complicated. You also need fuel/oxygen ratios that allow for sustained burning, else any fire extinguishes quickly. And heat. There are many fuels that just don't burn unless you heat them up and control their burning to heat the incoming fuel.
- zellyn 3y agoYeah, I wasn't thinking full Hindenberg, just damage would be expensive enough…