Lightweight Photovoltaic Composite Structure on Stratospheric Airships

Table 2

The mechanical properties.

The type of mechanical properties	Modified PET	EVA	The solar cell	Fiberglass mesh	Epoxy resin film
E (GPa)	0.837	0.655	52.12	11.4	1.1
Poisson’s ratio (μ)	0.42	0.3	0.3	0.28	0.38
Thickness (mm)	0.05	0.2	0.29	0.14	0.2