The A12 design was a true orbital rocket. It was proposed as a four-stage vehicle, comprising A12, A11, A10 and A9 stages. Calculations suggested it could place as much as 10 tonnes payload in low Earth orbit.
The A12 stage itself would have weighed around 3,500 tonnes fully fuelled, and would have stood 33 m (108 ft) high. It was to have been propelled by 50 A10 engines, fuelled by liquid oxygen and alcohol.
The A12 stage itself would have weighed around 3,500 tonnes fully fuelled, and would have stood 33 m (108 ft) high. It was to have been propelled by 50 A10 engines, fuelled by liquid oxygen and alcohol.