THE 2-MINUTE RULE FOR AMBIQ

In the beginning, NASA dismissed LOR as being a riskier possibility, as an area rendezvous had yet to generally be done in Earth orbit, much less in lunar orbit. Quite a few NASA officers, including Langley Study Center engineer John Houbolt and NASA Administrator George Low, argued that a lunar orbit rendezvous delivered The best landing around th

The S-IVB also continued to thrust at a small degree by venting gaseous hydrogen, to keep propellants settled within their tanks and stop gaseous cavities from forming in propellant feed traces. This venting also preserved Risk-free pressures as liquid hydrogen boiled off in the fuel tank. This venting thrust simply exceeded aerodynamic drag.[citat