Thanks for explaining the password protection. I haven't had time to delve into the program yet but would like the ability to modify various parameters as I play with it.
I applaud your efforts in attempting such an endeavor. I suspect that excel will not be adequate to model a gyro, but you are starting something. That gets the ball rolling, and we will be further along in our understanding because of your efforts.
I'd prefer to let people take teh time to absorb how this works and what it presents - before confusing many more with the next level of variables. But, since you are not the average forum attendee, you can simply turn off the Excel Protection under the Review tab. I did not asign a password.
Be careful that you don't change any of the formulas in the spreadsheet when they are not protected - I suggest you make a copy to work with to save the original. When there has been some constructive peer review, I will publish the next phase where everyone could play with the variables.
All the variables in the "Value" column, except gross weght and mast height are factored in the model. I am still playing with configurations to see whre theyre might be some holes in this very simple model.