This article presents a volumetric wave drag analysis for the conceptual design of a supersonic business jet airplane (SSBJ), by analyzing the influence of different external configurations (such as wing geometry, engine locations, and intake locations) on the volumetric wave drag. The analysis was done by employing Linearized Supersonic Area Rule, properly implemented on a VBA routine, coupled with a cone-based area extraction routine, implemented on a three-dimensional CAD environment.