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Engineering
Aerospace Engineering
Steering rockets in space by shifting CM
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[QUOTE="Baluncore, post: 6014206, member: 447632"] If the centre of mass is not on the axis of thrust, a continuous spin will be induced in the rocket body about the centre of mass. That spin must be removed, starting when the rocket has turned half way towards the required direction. Your system requires there be additional movable mass in the rocket. Might you use movable fuel or batteries as the mass? Could you do better by changing the aim of the rocket motor very slightly to provide the same axial misalignment. That could be controlled automatically by a gyroscope which might provide better control during launch. Offsetting the CofM or aiming the motor thrust are similar. Is there any difference in the dynamics and control requirement of either technique. Are there situations where moving the mass will have a positive or negative gravity component. To fly upwards, will you not always be pushing that weight uphill. Can you aim the rocket motor thrust without having a similar gravity component? Does that require gimbal mount for the motor. [/QUOTE]
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Steering rockets in space by shifting CM
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