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Topic: En deux mots comme en cent
Posted by: M, rode at ven. 20 janv. 2006 14:37:31
Keywords: je crois que c'est ce qu'ils utilisent dans Star Trek
Message:

Plutôt en cent en fait.

Les moteurs dont on a l'habitude sont des moteurs chimiques.
Ils brûlent un carburant et bla bla bla ...

Un moteur ionique lui ne brûle rien.
On fait sauter des atomes du carburant (on utilise un gaz, le xenon) et les dits atomes produisent une poussé en partant, ce qui fait avancer le véhicule.

Cette méthode est beaucoup plus efficace énergiquement qu'un moteur à combustion et à l'avantage de tourner dans l'espace à l'énergie solaire (et peut être un jour nucléaire).
Mais elle donne une acceleration très très faible.



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