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"Helios" was sort of a catch-all name for a subset of the Post-Saturn studies from ca. 1963, with at least General Dynamics and Douglas proposing several designs. The basic point of it was that the booster would have a combo of both chemical and nuclear engines. A common idea was something like a giant-sized Atlas, with the central sustainer (or several sustainers) being nuclear, while the droppable outer booster engines were chemical. Others with single stage with a mix of chemical and nukes staying together. This "Helios" had nothing to do with the Helios the topic is aimed at, yet Ehricke worked on both.Yup. A conical vehicle with a single large nuclear engine.
"Helios" was sort of a catch-all name for a subset of the Post-Saturn studies from ca. 1963, with at least General Dynamics and Douglas proposing several designs. The basic point of it was that the booster would have a combo of both chemical and nuclear engines. A common idea was something like a giant-sized Atlas, with the central sustainer (or several sustainers) being nuclear, while the droppable outer booster engines were chemical. Others with single stage with a mix of chemical and nukes staying together. This "Helios" had nothing to do with the Helios the topic is aimed at, yet Ehricke worked on both.
Yup. A conical vehicle with a single large nuclear engine.