Refering to my trusty P&W Handbook the relation between thrust is expressed by the following: THP = F x mph/375 Where THP is Thrust Horse Power, F is thrust in pounds and mph is miles per hour. Doing the math on a 60,000 pounder going at M.80 at MSL one would arrive at 97,000+ horse power. A figure that I cannot relate to. I kinda like the 4 gal per second thing.