LOW TEMPERATURE OPERATION OF BATTERIES.
Quarterly progress rept. no. 6, 15 Dec63-14 Mar 64
LITTLE (ARTHUR D) INC CAMBRIDGE MASS
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For short missions less than 2 hours, the performance of insulated but unheated battery systems can be improved by using mercury or alkaline zinc cells rather than Leclanche cells. For longer missions, insulated systems with either combustion or electrical resistance heaters are capable of realizing capacities in excess of 10w-hrlb. Further im provement should be possible by improved insulation - still restricted to inexpensive insulating materials. Reduction of the air gap between battery and insulation does not drastically alter cool-down rates, but it does enable a more accurate prediction of system cool-down to be made. Author