ROTATING disc wheels are subject to radial, tangential, and axial stresses, the last of which can usually be neglected.
The formulas for calculating the radial and tangential stresses developed by Dr. Stodola give reliable results, but carrying out the required calculations is a long and tedious process.
For this reason, Mr. Knight has attempted to put the Stodola formula in such a shape that it will allow its ready use and that will yield the desired design data in a few minutes instead of the 45 hr previously required.
