2013 Liquid vs vapor vs gaseous stoichiometric Combustion fuel Ratio for a 1.2 M Potato spud cannon скачать в хорошем качестве

2013 Liquid vs vapor vs gaseous stoichiometric Combustion fuel Ratio for a 1.2 M Potato spud cannon

potato cannon fuel vs muzzle velocity tests at US Air Force Academy, Co = a 772 grain 50 gram, 1.75 ounce Cylindrical raw potato projectile, a 47 inch clear PVC polyvinyl chloride barrel & chamber max / ideal barrel length was under a meter for 014 ftlbs, 091 fps, 027.9 m/s propane (C3H8) 020 ftlbs, 109 fps, 033.3 m/s ethanol (C2H60) 022 ftlbs, 113 fps, 034.6 m/s butane (C4H10) 043 ftlbs, 158 fps, 048.2 m/s methanol (CH4O) max / ideal barrel length not determined for 351 ftlbs, 453 fps, 138.1 m/s acetylene (C2H2) combustion chamber volume affected ignitable fuel air mixture range limits as rich & lean , most & least concentrated UFL u LFL, Upper 8 Lower Limit of Flammability, Most fuels only burn over a limited range of concentrations & may be the ratio where max energy is produced for a particular fuel or not propellant amounts were calculated to approximate a stoichiometric mixture , an ideal fuel ! oxidizer balance mix where both are completely consumed or without "excesses" of fuel & or oxidizer after combustion If we have less than 1% octane, or more than 6.5% octane, the octane will not burn. or , too much fuel, or too little fuel, , no boom , the maximum energy will only be produced when the ratio of fuel to oxygen is correct for the particular fuel. https://archive.ph/CXXhp https://archive.ph/23wwk https://archive.ph/18sB7 https://archive.ph/pkcZx https://imgur.com/a/zYeIbas https://archive.ph/tb7XX