this post was submitted on 09 Sep 2023
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The space shuttle contain a huge reservoir of liquid hydrogen at very low temperature creating extremely difficult engineering stresses.
So, insurance cost will be sky high if ever such planes take commercial flights.
Well you know what else is explosive? Jet fuel!
Do you know how brittle metals become at very low temperature ? Did you notice I did not talk about hydrogen explosiveness ?
But sure, let's now talk about explosiveness. Do you know the mixture ratio range is completely different (much greater) for air + H~2~ explosive mixture as compared to other mixtures ? You are very far from an expert on the topic aren't you ?
Hydrogen isn't explosive, it's flammable. Just like jet fuel.
Detonation
"A very wide variety of fuels may occur as gases (e.g. hydrogen), droplet fogs, or dust suspensions. In addition to dioxygen, oxidants can include halogen compounds, ozone, hydrogen peroxide, and oxides of nitrogen. Gaseous detonations are often associated with a mixture of fuel and oxidant in a composition somewhat below conventional flammability ratios."
For Hydrogen, if I recall correctly, the explosive range is from 4% to 75% hydrogen in air. I may dig a little bit more to find sources.
How many more false experts want to comment on this ? And feel free to downvote, you only underline your ignorance and arrogance.
Yes, when you combine a flammable substance and an oxidant, you can get an explosive. But hydrogen is flammable. It isn't an explosive. Explosives have their own oxidants.
It also had 5 pressure vessels’ worth of liquid H2 for the fuel cells in the payload bay, sometimes more depending on the flight (and never had any issues wrt that, though of course it did present its own challenges). Challenger’s “failure mode” was in the SRB. The ET happened to be right next to it. We can talk about the ET and its direct impact on Columbia because the foam shedding was a problem with the ET. And of course, the issues with the NASA culture that were present for both.
I’m not going to wade into the semantics of explosive vs flammable argument further down because at the end of the day it’s semantics.
And I am an expert since you seem very intent on only experts partaking in this discussion.