The experiments are studied in epoxy resin cast mechanical property, NOL hoop mechanical property,
surface property of metallic inner wall, vacuum outgassing of composite and composite pressure vessel, aimed to
the manufacturing of composite overwrapped pressure vessels(COPV) on the propulsion system of satellites. The result
shows that the burst pressure of the COPV is 86 MPa after 150 times fatigue experiments, the vessel characteristic
factor is 57. 7 km,and the COPV is suitable for the application needing in vacuum .