Measured and calculated radiation levels produced by galactic and solar cosmic rays in SST altitudes and precaution measures to minimize implications at commercial SST-operations
A 1969 NASA technical report by T. Foelsche, R. R. Adams, R. Mendell and J. W. Wilson on galactic and solar cosmic-ray dose levels at supersonic transport cruise altitudes, written for aerospace engineers and flight-safety planners. The single plate is a monochrome line graph: nested families of solid and dashed curves rising across a gridless field, labelled by flight date and radiation source in hand-lettered captions with leader lines, useful as diagrammatic linework, curve-bundle texture, or annotated chart typography.
