NASA NTRS · 19670000381
Machining heavy plastic sections
Abstract
Machining technique produces consistently satisfactory plane-parallel optical surfaces for pressure windows, made of plexiglass, required to support a photographic study of liquid rocket combustion processes. The surfaces are machined and polished to the required tolerances and show no degradation from stress relaxation over periods as long as 6 months.
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Stalkup, O. M.. 1967-10-01. Machining heavy plastic sections. https://ntrs.nasa.gov/citations/19670000381
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