In this study an initial concept is described. This shows the possibility of connecting axially an ordinary jet engine, a ramjat engine and a scramjet engine. Furthermore rocket mode is also available in this design. The different modes can be changed by this integrated system as easily as the different modes, or nosecone stages can be changed by ordinary jet engines below and above the speed of sound. Such an engine, with the appropriate fuel can be a great step towards the one stage spacecrafts of the future, due to eliminating the problems of carrying many different engines with different fuels and oxidyzers.
jet, ramjet, scramjet, integration, ssto, propulsion, LEO
