There was just recently an identical thread here, where someone posted that every version uses a glass hatch, unfortunately (composite would be lighter, & better insulation)
A simple piece of polycarbonate would work in this application sine it would be covered in solar cells anyway. The best solution I think would be to use the same body material but maybe that is not practical at this stage.
There was just recently an identical thread here, where someone posted that every version uses a glass hatch, unfortunately (composite would be lighter, & better insulation)