This Is What 44,000,000 Horsepower Looks Like

NASA has released this beautiful, crystal-clear video of Discovery's launch. It was taken from an HD camera mounted on the left solid rocket booster, during liftoff of the shuttle for mission STS-133. [Gizmodo]


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To be fair, it only develops that much horsepower whenever it's going 1115 m/s since power is thrust times velocity and a rocket engine gives thrust.

44million HP is 33*10^9 watt. Each SRB gives 14700kN, so a total thrust of 29400kN. Dividing it gives 1115 m/s.

So horsepower ratings on rockets are silly. A better way to explain rocket strength would be express the thrust in elephants, since that's also the go to metric to explain that something is heavy.