Figure 23.
The plot marks S equals 3, 3.7, 4.9, 5.7, 8.6. The horizontal axis is xi and ranges from 1.0 to 2.0. The vertical axis is R e raised to 1 over 2 C f and ranges from 5 to above 30. The curves begin near 9.5 at xi 1.0, dip to about 6.5, and then rise with repeated peaks and troughs. The peaks increase toward xi 2.0. A peak reaches about 18 near xi about 1.4, another reaches about 27 near xi about 1.65, and the highest peak rises above 30 near xi about 1.85. The curves end above 30 near xi 2.0. An arrow points from the S values toward the rising curve group near xi about 1.55.Variations of S on