Prometheus was a proposed crewed vertical-takeoff, horizontal-landing (VTHL) lifting body spaceplane concept put forward by Orbital Sciences Corporation in late 2010 as part of the second phase of NASA's Commercial Crew Development (CCDev) program. == Design == The Prometheus design was based on an earlier NASA design, the HL-20 Personnel Launch System.
Prometheus was a proposed crewed vertical-takeoff, horizontal-landing (VTHL) lifting body spaceplane concept put forward by Orbital Sciences Corporation in late 2010 as part of the second phase of NASA's Commercial Crew Development (CCDev) program. == Design == The Prometheus design was based on an earlier NASA design, the HL-20 Personnel Launch System.
Source: Wikipedia "Prometheus (spacecraft)" · CC BY-SA 4.0
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