Fanno Flow Relations Issue

[Rigel09]

The same value calculated with the option "gamma, Mach" cannot be reduplicated when option "gamma, T/T*" is selected. It seems that the value for T/T* can be calculated from the mach number but the mach number cannot be backed out from that same T/T*.

Steps to reproduce.

1. Go to Fanno Flow Tab in the UI
2. Set Gamma = 1. 4 and Mach = 3 Option = "Gamma, Mach"
3. Calculate
4. Change option to "Gamma, T/T*" and calculate
5. Observe crash.