Design and Stress Analysis of Extraterrestrial ... - The Black Vault

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hence
r M! rad/s ,(3.104)
designation i•p=
critical
.The'va.ue of w in formula (3.104) has been called critical
jangular velocity. The correspond~ir critical rpm is
n~p= • = ,'55V m r/min
With a further increas6 in
angular velocity (when w > %P)
the 1 shaft deflection becomes negative, while in 'absolute value it
begins to drop; with irnfini~ely high rpm the deflection becomes
equal to-e.
The mi'nus sign indicates that wien w > wp the shaft is
deflected in a.direction opposite the eccentricity. When w =
the disk wALll rotate around its own center of gravity. Thus, at
extremely high angular velocity~self-ventering occurs.
'Le~t us observe the location of the center of gravity of the
disk at various angular velocities., Figure 3.64 illustrates the
mutual arrangement of points 0, 01, and C wi.th angular velocities
less )than (Fig. 3.64a) and greater than (Fig. 3.64b') critical.
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