THE APOLLO2 DIARIES

The S-IVB also continued to thrust in a low stage by venting gaseous hydrogen, to keep propellants settled within their tanks and forestall gaseous cavities from forming in propellant feed lines. This venting also preserved safe pressures as liquid hydrogen boiled off while in the gasoline tank. This venting thrust very easily exceeded aerodynamic

Initially, NASA dismissed LOR as being a riskier option, as an area rendezvous had yet to generally be carried out in Earth orbit, much less in lunar orbit. Quite a few NASA officers, which include Langley Analysis Center engineer John Houbolt and NASA Administrator George Small, argued that a lunar orbit rendezvous delivered The best landing aroun