Date: 2012-10-01 16:56:56Spacecraft propulsion Rocket propulsion Rocketry Pyrotechnics Rocket engines Solid-fuel rocket Liquid-propellant rocket Rocket propellant Rocket Space technology Transport Aerospace engineering | | Practical Rocketry he first rockets ever built, the fire-arrows of the Chinese, were not very reliable. Many just exploded on launching. Others flew on erratic courses and landed in the wrong place. Being aAdd to Reading ListSource URL: cdn.preterhuman.netDownload Document from Source Website File Size: 183,57 KBShare Document on Facebook
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