The weight component plays vital role for any structure if it is moving opposite the gravity. Generally, rockets, missiles & aeroplanes will travel opposite to the gravity. To reduce weight of the structure most of the parts replacing with the composite materials because of their high strength to weight ratio. Generally in rockets, motors having the huge weight because the rocket motor will the fluid for combustion. These are generally treat as pressure vessels. In the present case, the motor will treated as the pressure vessel and analysed for composite materials. The composite materials chosen for the analysis are E-glass, S-glass, Kevlar and Graphite fibre with epoxy resin with volume fraction of 60%. The cylinder was analysed as laminated composite cylinder which contains the 8 layers. Static structural, pre-stressed modal analysis and eigen value buckling analysis were done by using the finite element simulation software Ansys workbench. From these two analyses, best composite layup and best material was recommended.