Capitalism in space: Orbital ATK is developing a new rocket, based on the solid rocket technology it provided for the space shuttle, to compete with SpaceX and ULA.
Two versions of the rocket are planned. The medium-lift variant will have a two-segment, solid-fuel first-stage motor and a single-segment, solid second. The heavy lifter will have a four-segment first stage and a single-segment second. Both versions can be outfitted with strap-on boosters for extra lift capacity, Orbital representatives said.
To complete the rocket’s development the company says it needs to win a follow-up contract that the Air Force has been issuing to help ween the U.S. from the use of Russian rocket engines.