It is the object of this memorandum to estimate how rapidly the HA-BA missile lubricating oil changes temperature under typical pre-launch conditions, These data are dssired since 1) the viscosity of the “Foreshot Fluorolube” varies greatly with tempera ture especially pelow 50℉ and 2) the flow metering device is an orifice. Therefore only small temperature changes are tolerable within the limits of accuracy desired in the oil flow rate.
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