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Scram Jets Now That Is Technology

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Information according to Wikipedia, the free encyclopedia.

A scramjet (supersonic combustion ramjet) is a variation of a ramjet where combustion of the fuel air mixture occurs at supersonic speeds. This allows the scramjet to achieve greater speeds than a conventional ramjet which always slows the incoming air to subsonic speeds in the combustion chamber. Projections for the top speed of a scramjet engine (without additional oxidiser input) vary between Mach 12 and Mach 24.[br][/br]Like a conventional ramjet, a scramjet consists of a constricted tube through which air is compressed, fuel is combusted, and the exhaust is vented at higher speed than the intake air. Also like a ramjet there are either few or no moving parts. In particular there are no high speed turbines as found in a turbofan or turbojet engine that can be a major point of failure.[br][/br]The scramjet requires extremely high speed airflow to function and requires acceleration to supersonic speed before it can be started. Recent tests of prototypes have used a booster rocket to obtain the necessary velocity. Theoretically, air breathing engines should have a better specific impulse while within the atmosphere than rocket engines.[br][/br]-- SOURCE :  http://en.wikipedia.org/wiki/Scramjet

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