Information AboutDual-thrust |
| CATEGORIES ABOUT DUAL-THRUST | |
| rocketry | |
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The advantage of dual-thrust motors is that, if the fuel were all of the fast-burning kind, the rocket would accelerate up to a higher speed initially but because Air Resistance increases quadratically with speed, the rocket would slow down very rapidly. This would give a higher peak speed but a lower average speed. Instead, the boost phase accelerates the rocket up to a high enough speed (high enough to propel the rocket to its destination fast, but not so high as to cause too much air resistance), and then the sustain stage allows the rocket to maintain this high speed for a while until it burns out, after which time it is able to coast and slowly lose speed. Dual-thrust motors are most prevalent in rockets which are atmosphere-bound since they have to deal with air resistance over most of their flight. It is similar in concept to that of Multi-stage rockets but much simpler to design and build since there is no requirement to detach stages, have separate components, etc. |
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