The First ICBMs
Once the World's other two superpowers Copernia and Sunda got their hands on the plans for Kiwet's Icarus V rocket, they quickly founded their own ICBM programs. Throughout the next 6 years, Sunda slowly progressed towards a functional ICBM. Their first rockets were almost directly copies of the Icarus V, but as the rockets got bigger and better, their design drifted from the Icarus V, they achieved their first sucess in 1951, when they developed the C-5 ICBM.
The C-5, weighing about 250 t, was designed to deliver a 5t nuclear warhead to Copernia from the edges of Sunda's territory. With it's range being around 7000 km, it became the first ICBM. However, the ICBM had limitations, as its other enemy, Kiwet was out of reach of the C-5. For this reason an even bigger series of rockets, the D-series, started development in late 1951.
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The first D-series rocket was the D1, weighing 340t and could deliver a payload of ~6t to a location on the other side of the Earth. The first flight-ready one was delivered to launchpad in Wenchang on February 7, 1953.
First Test of the D-1
Due to the damage done to the Wenchang Launch Facility by the D-1's first flight test, it would not be until May that they next D-1 could be launched from there.
Second Test of the D-1
After the success of the second D-1 test, the go-ahead is given for production. In the following year, over a hundred would be made.
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The leader of Sunda's space program, Wernon, had even bigger plans for the D-1 rocket, he was very enthusiastic about the concept of space travel, it was what had led him into the field of rocketry in the first place. He proposed the Mun Program, which aimed to put artificial moons(satellites) in low earth orbit.
Despite his adamance, it would not be until 1953, after many years in limbo, that his program would finally be given the go-ahead after the second D-1 Test. Immediantly work started on converting the D-1s given into launch vehicles for the Mun Program, with the first mission, Mun-2, planned to launch before 1955.