The S-IVB also continued to thrust in 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 maintained Risk-free pressures as liquid hydrogen boiled off in the gas tank. This venting thrust https://low-power-ic53085.ttblogs.com/13582665/how-much-you-need-to-expect-you-ll-pay-for-a-good-apollo-3-5-blue-plus-processor