325 in solid

Notional solid rocket engine. Study 1963. Recoverable motors; separation at 1,972 m/s at 53,000 m altitude; splashdown using retrorockets under 3 61 m diameter parachutes 610 km downrange. Solid propellant rocket stage. Massed estimated based on tank volumes, total thrust, and first stage burnout conditions. Recoverable stage; separation at 1,972 m/s at 53,000 m altitude; splashdown using retrorockets under 3 61 m diameter parachutes 610 km downrange.

Masses estimated based on volumes, total thrust, and first stage burnout conditions.