Great thread for us number crunchers !
747FOCAL - Your numbers look realistic to me. A bit of trivia, how does 95 sec to Vrot in a 747-400 at Singapore sound ?
witchdoctor - Based on 747FOCAL's logic, your 6 sec looks optimistic. I estimate 15 sec to 60 mph (52 kts)
anti-skid - I think your F1 car info looks OK, but I doubt the Concorde numbers. I've never had the privilege of seeing a Concorde take off. What's it's Vrot and how long to achieve it ? Then we could work out the numbers.
Work is the result of a force moving something by a distance over a time. 1 HP = 550 ft.lb/sec hence the direct conversion from torque to power, but thrust is only force. So, as mentioned earlier, more info is needed to calculate the power generated by a certain thrust.
Keep the info coming to exercise the grey matter.
Spec