Abstract: “Comparative analysis and the present research carried on Multidirectionally Reinforced Composites show that they can be potential and prospective candidate materials for Aerospace applications as they have superior specific properties compared to the traditional 2-D laminate composites. To overcome the shortcomings of 2-D Composites various types of Multidirectionally reinforced composites (3-D) incorporating fibres in thickness direction have been developed and they are free from delamination and demonstrate to be better damage tolerant materials. They offer the promise of being tailored to meet directional property requirements of an end use item. Mechanical, physical and thermal properties of composites can be tailored by the design of preform parameters such as fibre, matrix properties, fibre orientation, fibre volume fraction in each direction, packing efficiency, pore size, pore distribution, unit cell volume and the Fibre Architecture. This paper addresses the var”

Keywords: Multidirectionally Reinforced Composites, Preform, 3D orthogonal non woven preforms, unit cell, 4D Hexagonal, Fibre Architecture, Fibre Volume fractions, Void distribution