Originally two test flights of this demonstrator were planned. By late 2006 it was announced that it had been cancelled in favor of a single 50% scale unmanned Galaxy module test, scheduled for 2008..
Habitable Volume: 30.00 m3.
Gross mass: 3,000 kg (6,600 lb).
Height: 6.00 m (19.60 ft).
Diameter: 2.00 m (6.50 ft).