The aerospace industry is one of the major fast growing fields and has a major contribution toward the development of a country by contributing to trade, freight and defence. The major concerns in this field are regarding the weight of the aircraft, performance and capacity. Regarding the weight of the aircraft, it has a major role in the functioning and performance of an aircraft. Starting from wood, metal, etc. there has been a continuous development in parts of an aircraft. Recent trend is that the metal has been replaced by composite materials, which are lighter in weight and have more strength and increased performance than their counterparts. Regarding the composites the have two major parts namely fibre and matrix. The proportion of this two has a major influence on the properties of the composite. The carbon epoxy composites are being used in major parts of an aircraft and their porosity level makes a major contribution to their performance. This composite is manufactured by variety of methods majorly by autoclave method. These composites are tested for their optimum porosity level as high porosity leads to the decrease in the strength of the part and hence leads to failure, which may cause damage at a large extent. Hence this project will be helpful to identify the optimum porosity level at which the part shows high strength and performance for the ideal functioning of the part.