Sprintcar;
I don't have any links to spreadsheets, but offer the following advice;
If the taper per side is less than the friction coefficent of the material and lube conditions, then the taper will be self locking. If you wish to dissassemble easily, then the angle per side needs to be up around 5 degrees.
The fit-ups, their resulting internal pressure, and capacity to transmit forces without fretting is quite complex, and highly influenced by surface condition. There is a lot to be gained by referance to sucessful, simular designs.