Abstract:In order to meet the demand that working temperature of the composite layer should be below 80益,
an insulation layer is wrapped around the composite overwrapped pressure vessel (COPV) mounted in the engine com鄄
partment of launch vehicles. Based on lumped parameter method, structural parameters and physical property data of
a 40 L COPV, a numerical model in consideration of the radiation, conduction and convection process was estab鄄
lished. It analyzed the insulation performance and discussed the influence of the insulation layer thickness. Moreover,
insulation tests of the COPV wrapped by an insulation layer with the thickness of 5 mm or 10 mm were carried out.
The numerical results agree well with the experiment measurements.
