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Cross-Program Design Specification for Natural Environments (DSNE) – SLS-SPEC-159

https://ntrs.nasa.gov/citations/20210024522
brief description

Chapters 4–5 list lunar-surface environmental limits: temperature (-233 °C to +127 °C), micrometeoroid flux, solar radiation, and electrostatic charging. Tables 5-7 give particle velocity vs crater depth data and worst-case thermal gradients, vital when selecting wheel materials, coatings, and lubricants.

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