Comments by "TheThirdMan" (@thethirdman225) on "" video.

Charles Lambert The Nammo rocket for the Bloodhound SSC uses HTP as an oxidiser for the solid fuel. Doesn’t seem to need an ignition source.
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@fyrstormer Well, most hypergolic engines are simple pressure-fed devices. Do you include the energy expended to fill up the helium tanks? Most of these things don't need pressure to ignite. There are demonstrations of this in a lot of posts about rocket fuels.
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@fyrstormer Yes but it requires pressure to get the optimum level of pressure needed in the combustion chamber to do the work. That's my point. The hypergolic will oxidise (ignite) on contact anyway but they're better under compression. I'm not trying to be a smart arse here. I'm just posing the question, that's all.
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@fyrstormer "Atomizing the fuel and oxidizer to maximize their surface area for chemical reactions is not the same as heating it." No but the process required energy to achieve it. "Atomizing the hypergolic chemicals doesn't actually raise their temperature, even if the individual droplets are slightly heated by the atomizing process, because the enormous increase in volume translates to a net decrease in temperature." That should not be inferred to mean energy recovery either. Once again, what I'm saying is that there is energy needed to pressurise the fuel and oxidiser. That is energy consumption, whether it heats the fuel or not because it's stored as potential energy. The pressurised tank is holding potential energy. See what I mean? It's not an ignition source for sure but there are other kinds of energy.
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@fyrstormer Okay, so you're only referring to the initiation of the reaction and were not talking about the delivery pressures (which are true for all rocket engines except solid fuel). If so, no prob but I think we'll have to agree to disagree. No harm done. ;)
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