Sector V containing the fuel tank is covered with gold foil mylar (in this case gold safety blanket) while Sector IV will be covered with the same safety blanket but with the alumined side. To reproduce the wrinkled effect the blanket size is slightly larger than the area to be covered (by about 3 to 4 mm) and it is only fixed to the model with double sided tape (about 1 to 2 mm wide) placed on the 4 edges of the foil mylar.