NOT KNOWN FACTS ABOUT APOLLO 3.5 BLUE PLUS PROCESSOR

The S-IVB also ongoing to thrust at a reduced amount by venting gaseous hydrogen, to keep propellants settled inside their tanks and prevent gaseous cavities from forming in propellant feed traces. This venting also taken care of Secure pressures as liquid hydrogen boiled off from the gas tank. This venting thrust easily exceeded aerodynamic drag.[