DETAILED NOTES ON APOLLO 4 PLUS

The S-IVB also continued to thrust at a small degree by venting gaseous hydrogen, to maintain propellants settled of their tanks and prevent gaseous cavities from forming in propellant feed traces. This venting also maintained Secure pressures as liquid hydrogen boiled off from the fuel tank. This venting thrust simply exceeded aerodynamic drag.[ci

Map showing landing internet site and photos taken Soon after about 7 several hours of rest, the crew was awakened by Houston to organize for that return flight. Two and a half hrs later on, at seventeen:54:00 UTC, they lifted off in Eagle's ascent phase to rejoin Collins aboard Columbia in lunar orbit.[145] Film taken with the LM ascent phase on l