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    Apollo Command Module Environmental Control System Hardware: Potable Water Tank, AiResearch Part 812300 (Contract NAS-9-150). A large and impressive tank, approximately 12" in diameter x 16.5" tall (overall, with bottom bracket), an important part of the environmental system. The metal ID plate on the side states the part number as "812300-2-1", the serial number as "24-104", and reference spec as "ME192-0007-0002". Stamped nearby are multiple inspection stamps and the "Not Acceptable For Flight" designation. A 1973-dated NASA Technical Note "Apollo Experience Report - Potable Water System" states the use of this equipment: "The potable-water tank serves two purposes: a water-storage container in case of fuel-cell failure and an equalization tank to provide water during peak-demand conditions when the water demand rate exceeds the fuel-cell production rate for brief periods. The cylindrical vessel holds a maximum of 36 pounds of water and is fabricated from 6061 aluminum alloy. An oxygen-filled polyisoprene bladder maintains a pressure of approximately 25 psi in the tank and throughout the system. The oxygen that keeps the bladder inflated is obtained from a common SM supply that also provides oxygen for metabolic consumption and for power generation. Because free hydrogen in the water diffuses through the bladder material, a low-rate gas bleedoff is provided to prevent a buildup of diffused hydrogen, which could result in an explosive hydrogen/oxygen mixture in the oxygen plenum." A complete copy of this report is included with the lot. One of the most displayable pieces of Apollo hardware we've offered. Rare. Very fine.

    Auction Info

    Auction Dates
    November, 2014
    12th Wednesday
    Bids + Registered Phone Bidders: 2
    Lot Tracking Activity: N/A
    Page Views: 398

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