GURPS Spaceships Design Spreadsheet

[Flyndaran]

Originally Posted by Agemegos

Use Rapidity. Delta-r is classical delta-v divided by c.

But in general, you can't do relativity without doing relativity.

Okay, sorry that I'm asking questions when my normally subpar brain is even less par.

But since rapidity for 0.200 C is 0.203, I should use (0.200)(0.200/0.203) to get its real cruising speed of 0.197, right?

Thanks for walking me through what's old hat to you.