Hermann Oberth worked on the design during 1941, and in December 1941 Walter Thiel proposed that the A10 use an engine composed of six bundled A4 engines, which it was thought would give a total thrust of 180 tonnes.
Hermann Oberth traballou sobre o deseño durante 1941 e en decembro de 1941 Walter Thiel propuxo que o A10 usara un motor composto por seis motores de A4 unidos, que tería dado como resultado un empuxe de 180 toneladas.