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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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Minimum permissible leakage resistance established for instrumentation systems

Mathematical formulas are used to determine if, and to what extent, an instrumentation system that has been exposed to the elements should be dried out to restore minimum permissible leakage resistance to ground. Formulas are also derived and used for an intermediate number of systems that are exposed to moisture penetration.

Perrin, J. L.↗

The lower ionosphere at solar minimum

Identification of regions between 65 and 120 km by different loss mechanisms - study of lower ionosphere at solar minimum based on measurements by Nike-Apache rockets

SOLAR SPECTRUM↗