3 ms·You first paragraph describes an article I really want to read!by anitil 9y agoYou first paragraph describes an article I really want to read!troutwine 9y agoHeh, I misunderstood you at first and spent five minutes searching for a good, introductory article on propulsive efficiency equations.koverda 9y agoCareful there, goofing off for 5 minutes every day adds up to 3 more full days of work per year. That’s a big deal.