A general first‐order approximation correction is presented which has to be applied to the theoretical frequency decay ratio ‐ω̇/ω of a rigid rotor in order to find the corresponding ratio for a real elastic rotor. The procedure is exemplified for the particular drags associated with gas friction and with the Coriolis effect acting on steel spheres. In these cases the decay ratio is at most about 1% smaller than that of the corresponding rigid sphere.

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© 1973 American Institute of Physics.
1973
American Institute of Physics
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