I found it interesting that the Mylar on the CM exterior was integrated into the design some time later...
The "heat shield" described in that paper is the ablative assembly of phenolic resin injected into steel honeycomb. This is the same layup that is used on the underside of the CM, but thinner for the upper structure. The heat-shield assembly indeed has terribly unfavorable optical properties for solar heating. In the final Apollo design, the lower heat shield was covered by its interface with the SM while the upper heat shield was covered with strips of aluminized Mylar and/or Kapton. In the Earth-orbit Skylab variant, the CM was painted in white thermal paint.
Lots of interesting analysis of the problems here, problems that needed solutions.
Yes. The purpose of this paper seems to be the partitioning and scoping of emerging thermal problems to be solved. It's an appropriate activity for that stage of spacecraft development.
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