Figure 1 shows the type of thrust bearing used on the 200-inch telescope at Palomar. Oil is supplied at high pressure and flows radially outward between two parallel circular plates. We are interested in obtaining design formulas so that, given the total supported load, F, the supply gage pressure, po, and the desired gap, h, we can determine the necessary disk diameter, D, and the required volume flow rate, Q, for oil of known viscosity and density p, the hole diameter being d. In what follows, you may take for granted that h < D.

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