Abstract
The paper will present a survey of the technological status and the economy of current space boosters and re-entry vehicles. Despite large reductions of launch costs, the specific cost per pound in orbit is still so high that only a few large-scale flights per year can be supported even by the economically strongest countries. It is pointed out that low-cost space launch- and re-entry vehicles are the key for extended space flight of the future. Several concepts for re-useable ferry-type vehicles offer for the future most attractive possibilities for making ‘space flight traffic’ approach the economy and reliability of ‘atmospheric flight traffic’.
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