The European Launcher Development Organisation (ELDO) was a multinational consortium formed in the 1960s to build an indigenous European space launch vehicle, Europa.
In April 1960 the British government cancelled its Blue Streak missile programme. Planned to be the first stage of a satellite launcher its development was almost complete. Britain proposed a collaboration with other European countries to build a three-stage launcher capable of placing a one-ton payload into low Earth orbit.Consisting of Belgium, Britain, France, Germany, Italy and the Netherlands, with Australia as an associate member.Preliminary work began in 1962 and ELDO was formally signed into existence in 1964.
Britain with Blue Streak became the first stage of the European launch vehicle with France providing the Coralie second stage and Germany the third. Italy worked on the satellite project, the Netherlands and Belgium concentrated on tracking and telemetry systems and Australia supplied the launch site.
The first ten launches took place at Woomera in Australia and were designated with an F. The project was divided into three phases:
Phase 1 (1964 - 1965) - Launches F1 - F3, the Blue Streak first stage launches northwest towards Talgarno.