The J-2 Liquid-Fuel Motor, using liquid hydrogen and liquid oxygen, was the powerplant for the second and third stages of the Saturn V launch vehicle that took astronauts to the Moon in the Apollo ...

Pratt & Whitney Rocketdyne (PWR), a business unit of United Technologies Corp. (NYSE: UTX – News), has been selected by NASA to provide a new version of its Apollo-era J-2 as the propulsion ...