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Abstract
The use of the hypersonic vehicles increases day by day and improvement in the design and getting maximum efficiency is a key factor. To have the maximum efficiency wave drag need to be the major consideration. Detachment of the wave drags from leading edge decrease the drag co-efficient and increases the L/D ratio. The evolving method to short out the issue is spike in the frontal cone. Attachmentof the spike at the leading edge various the stagnation point position and varying the drag co-efficient value. This case study shows the advantage of using spike in different frontal cones. Variation in the L/D with respect to the length of the spike is discussed.