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| PROPULSION
ENGINE TYPES |
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A comparison of the two propellant types
reveals each has its own advantages and disadvantages.
Besides usually being a lighter weight, solid fueled rockets are also relatively
simple in design when compared to the liquid fueled types. This simplicity is
their chief advantage. Since the rate at which fuel burns (and the resulting
thrust) is dependent on the surface area of exposed propellant, solid fuel rockets
can be designed with very large thrust.
However, once a solid rocket is ignited, it will consume all of its fuel, without
any option for shutoff or thrust adjustment. Another key disadvantage is the
danger that the premixed fuel and oxidizer might become unstable and detonate. |
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