| Tier Two |
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Other Designations: Tier 2. Class: Manned. Type: Spacecraft. Destination: 400 km orbit. Nation: USA. Manufacturer: Scaled. After the successful win of the X-Prize for the first suborbital flight by Burt Rutan's Tier One / SpaceShipOne, the designer hinted a follow-on orbital spacecraft was being designed. No details were forthcoming... the enlarged SpaceShipOne/Tier One planned for commercial suborbital flights was dubbed Tier 1b.
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