Origins
After World War II, the United States experimented with captured German V-2 rockets as part of the Hermes project. Based on these experiments the U.S. decided in 1946 to develop its own large liquid-fueled rocket design, to be called Neptune but changed to Viking. The intent was both to provide an independent U.S. capability in rocketry, to continue the Hermes project after the V-2's were expended, and to provide a vehicle better suited to scientific research. The Navy, in particular, needed a vehicle to study the atmosphere and learn how to predict bad weather which would affect the fleet.
The V-2 would tumble in the rare atmosphere at high altitudes. Having been designed as a weapon, the V-2 carried a large payload, approximately one ton of high explosive. This was more than was considered necessary for the scientific instrument payload of a high-altitude research rocket, but in the case of the V-2, used for research, most of the payload was lead ballast required for stable flight, limiting the potential speed and altitude that could be reached with the smaller payloads typically needed for early scientific investigations.
The Naval Research Laboratory (NRL), partly at the instigation of the American Rocket Society (ARS), chose to build the advanced sounding rocket. Milton Rosen, head of the Viking project, credits rocket pioneer Robert Goddard, the ARS, the California Institute of Technology and the V-2 for the "profound influence" they had on the design of the rocket.
The Viking was the most advanced, large, liquid-fueled rocket being developed in the U.S. at the time.
Read more about this topic: Viking (rocket)
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