This paper presents the design and development of a novel hypersonic flight vehicle capable of operating efficiently across subsonic, supersonic, and hypersonic speed regimes. The vehicle features a wedge-shaped aerofoil optimized for high-speed performance. Key aerodynamic parameters, including lift force, drag force, and velocity variation, are analyzed to assess the design efficiency. Computational flow analysis/CFD simulations are conducted using the finite volume method (FVM) with cuboidal mesh elements to accurately determine these parameters. The geometric modelling of the aircraft is done using Fusion 360 and OpenVSP, while the flow analysis is performed using ANSYS Fluent. The results showed a lift-to-drag ratio of 7.89 at subsonic speeds, 7.65 at supersonic speeds, and significant shockwave formations at hypersonic speeds, emphasizing the need for effective thermal protection systems. These findings provide significant inputs into the aerodynamic behaviour of hypersonic flight vehicles, contributing to the advancement of high-speed aerospace engineering. The results of this research provide significant inputs into the aerodynamic behaviour of hypersonic flight vehicles, contributing to the advancement of high-speed aerospace engineering.