AKA: X-15A-2. Status: Out of production. Thrust: 262.45 kN (59,000 lbf). Gross mass: 16,069 kg (35,426 lb). Unfuelled mass: 7,766 kg (17,121 lb). Specific impulse: 276 s. Specific impulse sea level: 239 s. Burn time: 90 s. Height: 15.47 m (50.75 ft). Diameter: 1.42 m (4.65 ft). Span: 6.80 m (22.30 ft).
Cost $ : 100.000 million.