WA4SWJ wrote:That was an Orbital Sciences rocket. Not sure if they used Soviet parts or not.
Russian supplied engines that were "americanized" (updated to US specifications).
" Aerojet AJ26 engines, which are modified Soviet-built NK-33 engines. Together they produce 3,265 kilonewtons (734,000 lbf) of thrust at sea level and 3,630 kN (816,100 lbf) in vacuum.[6] As Orbital has little experience with large liquid stages and LOX propellant, some of the Antares first stage work was contracted to the Ukrainian Yuzhnoye SDO, designers of the Zenit series.[12] The core provided by Yuzhnoye includes propellant tanks, pressurization tanks, valves, sensors, feed lines, tubing, wiring and other associated hardware.[20]" From
http://en.wikipedia.org/wiki/Antares_%28rocket%29