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How does a starship stop?
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[QUOTE]Originally posted by Capt_Frank_Hollister: [QB] An RCS would not be sufficient. Imagine this scenario: You turn on a SSF to lower the effecive mass of the ship. Then you turn on your impulse engines (essentially a fusion rocket) and your ship moves very fast. Fine. Then you want to stop so you turn off the SSF, your ship is effectively more massive, so it slows down. Good. Problem is, even though you are travelling slower, since the ship is now more massive (effectively) the ship still has the SAME momentum, no change there... That means that you still need an equal force to stop the ship as it took to get it moving, this is from the impulse engines. The RCS will not be able to produce nearly the same thrust as the impulse engines and would not stop the ship (unless you had a very long burn). That's why I still think something like the IDF still needs to be involved somehow. You need a device that actually reduces the kinetic energy of the ship without producing an equal but opposite thrust. [/QB][/QUOTE]
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