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Apr 1, 2019 at 11:36 history edited FreeMan CC BY-SA 4.0
minor grammar policing and spelling
Apr 1, 2019 at 4:37 comment added jamesqf @user3528438: For example, the Space Shuttle solid rocket boosters, which used aluminum metal with an ammonium perchlorate oxidizer.
Mar 31, 2019 at 22:58 comment added Mr X @user3528438 But it has a very low physical density. Which is why it is impractical for usage as a fuel because of the weight and volume of a sufficiently large fuel tank. Liquid H2 is cryogenic which has its own set of problems as seen by the Space Shuttle.
Mar 31, 2019 at 21:40 comment added user3528438 Hydrogen has such a high energy density than anything else that hydro carbon is almost next-to-ideal, which is why kerosene and methane are both considered very good rocket fuels.
Mar 31, 2019 at 21:31 comment added user3528438 Energy per unit weight pf lithium is actually half of jet fuel. You might have better luck with aluminum. Technically it's not too difficult since solid ramjet is already done, you add metal into the base fuel.
Mar 31, 2019 at 19:54 answer added Peter Kämpf timeline score: 5
Mar 31, 2019 at 19:37 history asked Mr X CC BY-SA 4.0