Description: A comparison of the fuel-air flame speeds in butane/air and hydrogen air mixtures. The mixtures in each case are near stoichiometry. Hydocarbons-air mixtures are typically what cars run on, just with octane-air rather than butane air. You can run rockets on liquid hydrocarbons/liquid oxygen, indeed the heavy lift section of the saturn V rocket ran on liquids oxygen (LOX) and kerosene (a moderately long chain hydrocarbon). While per unit vol...