section_path: History/Early design work on orbital subsystems
section_name: Early design work on orbital subsystems
paragraph_text: Early design work on orbital subsystems
  
  Blue Origin began developing systems for orbital human spacecraft prior to 2012. A reusable first-stage booster was projected to fly a suborbital trajectory, taking off vertically like the booster stage of a conventional multistage launch vehicle. Following stage separation, the upper stage would continue to propel astronauts to orbit while the first-stage booster would descend to perform a powered vertical landing similar to its New Shepard suborbital vehicle. From the earliest design concepts, the first-stage booster was to be refueled and relaunched to reduce costs of access for humans to space.
  
  The booster launch vehicle was projected to lift Blue Origin's biconic Space Vehicle capsule to orbit, carrying astronauts and supplies. After completing its mission in orbit, the Space Vehicle was also conceptually designed to reenter Earth's atmosphere and land under parachutes on land, to be reused on future missions.
  
  Engine testing for the (then-named) Reusable Booster System (RBS) launch vehicle began in 2012. A full-power test of the thrust chamber for Blue Origin BE-3 liquid oxygen / liquid hydrogen upper-stage rocket engine (BE-3U) was conducted on a stand at the John C. Stennis Space Center (NASA test facility) in October 2012. The chamber successfully achieved full thrust of 100,000 lbf (about 440 kN). By early 2018, it was announced that the BE-3U hydrolox engine would power the second stage of the New Glenn.