Yes, in fact, I still use it myself. The basic propulsion math mechanics behind Aurora haven't changed, and I figure they won't in a long time, so this should stay fairly up to date.
You might also be interested in this thread:
http://aurora2.pentarch.org/index.php?topic=7647.0...where 2 other members here submitted similar sheets that instead solve for either highest speed on a desired range and mass designation, or minimum mass for a wanted speed and range combo. So with mine, which solves for range on wanted speed and mass, you have all 3 situations covered.
I have all 3, and use all 3, but I wanted to merge them into one super sheet for long. Problem is, the other two are more advanced, as they use VBA custom programmed commands, which I can read and understand, but not write myself, and I simply don't feel like learning VBA just for this purpose.
