(Solution) - The weight of the insulation in a spacecraft may be -(2025 Original AI-Free Solution)

Paper Details

The weight of the insulation in a spacecraft may be more important than the space required. Show analytically that the lightest insulation for a plane wall with a specified thermal resistance is that insulation which has the smallest product of density times thermal conductivity.
GIVEN
Insulating a plane wall, the weight of insulation is most significant
ASSUMPTIONS
One dimensional heat transfer through the wall
Steady state conditions