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 help keep propellants settled within their tanks and forestall gaseous cavities from forming in propellant feed traces. This venting also maintained Harmless pressures as liquid hydrogen boiled off from the fuel tank. This venting thrust conveniently exceeded aerod