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The three primary engines (which use the gasoline within the external tank) burn for about eight minutes, producing 375,000 pounds of thrust throughout the burn. In an area Shuttle SRB containing over a million pounds of fuel, the burn lasts about two minutes. The propellant mixture in each SRB motor consists of ammonium perchlorate (oxidizer, 69.6 % by weight), aluminum (gas, 16 %), iron oxide (a catalyst, 0. Four percent), a polymer (a binder that holds the mixture collectively, 12.04 percent), and an epoxy curing agent (1.96 percent). In the next part, we’ll look at the particular gas mixture in stable-gasoline rockets. Strong-gasoline rocket engines were the primary engines created by man.
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