The Super V-2 was a planned intermediate-range ballistic missile designed in France in 1946–47. It was the creation of German engineers who had worked on the original V-2 rocket. Four variants, with a range of up to and capable of carrying warheads of up to , were envisaged. However, the French government declined to fund practical development and the programme was cancelled in 1948. The research done on the Super V-2 was repurposed to develop the Véronique sounding rocket, ultimately leading to the Ariane rocket family. Development Between May and September 1946, France's Centre for the Study of Self-Propelled Missiles (CEPA) recruited around thirty German engineers who had previously worked on the rocket programmes of Nazi Germany at the Peenemünde Army Research Center. Like its counterparts in the United Kingdom, United States and Soviet Union, CEPA aimed to obtain and further develop the rocket technology devised by Germany during the Second World War. The engineers were settled in Vernon, halfway between Paris and Rouen. They devised a two-stage project, no. 4211, which envisaged assembling and flying V-2 missiles constructed with original parts. Around 75 percent of the parts needed to assemble thirty V-2 missiles were acquired from companies in France and the French occupation zone in Germany that had supplied the original German V-2 project. However, the French were unable to acquire the remaining 25 percent of the parts due to the refusal of the United States and Soviet Union to supply them. It was also found that it would take much longer than expected to build test facilities in France and French-ruled Algeria. This forced a different approach. The work on project 4211 was redirected towards an existing parallel project, no. 4212, that had been started to create a "pure French" development of the Aggregat rocket family – of which the V-2 was a member – along the lines originally envisaged by the Peenemünde researchers during the war. A new and much more powerful engine would be developed for the V-2, powered by new fuels, to create an advanced long-range V-2-based rocket. The rocket would be the same size as the original V-2 but would be much stronger structurally and capable of generating up to 40 tons of thrust, with detachable booster rockets and aerodynamic surfaces to increase its range. Variants Four versions of the Super V-2 were envisaged, each representing a progressive technological increase from its predecessor: R1