SNAP 7 PROGRAM--TASK 8--STRONTIUM-90 FUELED THERMOELECTRIC GENERATOR DEVELOPMENT. Quarterly Progress Report No. 7, May 1 through July 31, 1962

Technical Report · Thu Oct 31 04:00:00 EST 1963

DOI:https://doi.org/10.2172/4781268· OSTI ID:4781268

McDonald, W A

The effort on SNAP 7A and 7C was confined to operating the reliability model. There were fluctuations in output power that can be attributed to variations in the operating parameters, plus an increase in the internal resistance. In the SNAP 7B project the second 60-watt generator was completed and has undergone the beginning-of-life (maximum input, helium gas) portion of the parametric tests. The performance was nearly identical to that of the first 60-watt generator. The unit will be used with the SNAP 7B system. The installation concept for the SNAP 7B system was approved by the U. S. Coast Guard. The generator is to be housed in a finned aluminum container that will provide the required radiator surface. This container will be filled with a water- ethylene glycol mixture that is necessary to transfer the heat from the generator into the container. The battery-converter compartment is an integral part of the container lid. During the time the entire SNAP 7D system was subjected to shock and vibratlon tests, no mechanical or functional deficiencies were detected. The required temperature tests followed the mechanical tests. During this period the complete system was operated at maximum intermediate and minimum temperatures. Design objectives were satisfied throughout the test. The SNAP 7D generator was fueled at Oak Ridge National Laboratory (ORNL) on June 12, 1962, with a total thermal input of 1435 watts. The iueled generator was returned and integrated with the system. The system was demonstrated and accepted on July 3, 1962. (auth)

• Research Organization: Martin-Marietta Corp. Aerospace Div., Baltimore
• Sponsoring Organization: USDOE
• DOE Contract Number: AT(30-3)-217
• NSA Number: NSA-17-002627
• OSTI ID: 4781268
• Report Number(s): MND-P-2483-7
• Country of Publication: United States
• Language: English

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ALCOHOLS
ALUMINUM
DETECTION
ELECTRICITY
ETHYLENE
FAILURES
FINS
GLYCOLS
HEAT EXCHANGERS
HEAT TRANSFER
HEATING
IMPACT SHOCK
MIXING
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PLANNING
POWER
POWER PLANTS
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SPACE APPLICATIONS AND TECHNOLOGY
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SURFACES
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