Spin stabilization is an old art, developed early in the space age, but it is not always easy to accomplish, especially atop a missile packed with heavy nuclear arms.
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But a crude warhead fired by an inexperienced attacker is likely to have no spin stabilization and to gyrate wildly, often tumbling end over end, making it hard to track.
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After a year, the second flight was launched on 22 March 2007 and it also ended in failure, due to a spin stabilization problem that automatically caused sensors to turn off the Merlin 2nd-stage engine.
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Spin stabilization is limited in accuracy as a targeting technique by the accuracy with which one can point the launching tube and the accuracy with which the orientation of the projectile is constrained by the tube.
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Prior to the separation, the EDM was spun up 2.5 RPM ( see also spin stabilization ) and then released at a velocity of about 1 km / h relative to TGO . The EDM was designed to go into a lower-power hibernation mode for about 3 days while it traveled solo to Mars.
