Supersonic aircraft represent one of the most remarkable achievements in aviation, as they are capable of flying at speeds exceeding the speed of sound, which is approximately 343 meters per second at sea level under standard atmospheric conditions. This speed is measured using the Mach number. When an aircraft exceeds Mach 1, it enters the supersonic flight regime, opening new possibilities for reducing air travel time and advancing air transportation technologies. Designing supersonic aircraft requires careful consideration of complex aerodynamic challenges. When an aircraft exceeds the speed of sound, shock waves form around parts of its structure, including the nose and wings. These waves affect pressure distribution and aerodynamic drag and may produce a powerful sound known as a sonic boom, which occurs when pressure waves generated by the aircraft reach the ground. Therefore, engineers rely on streamlined designs and suitable wing configurations to reduce drag and improve stability during high-speed flight. Engines are among the most important components determining the performance of supersonic aircraft. They must generate substantial thrust while maintaining operational efficiency under conditions of high speed and temperature. Advanced turbojet engines are used in many supersonic applications, while ramjet engines are employed in certain specialized designs intended to achieve much higher speeds. These aircraft also require materials capable of withstanding aerodynamic heating caused by friction with the air, as well as the mechanical stresses and vibrations experienced during flight. Despite the considerable potential of supersonic aviation, its development faces several challenges related to fuel consumption, noise, operating and maintenance costs, and restrictions imposed on supersonic flights over populated areas in some countries because of sonic booms. Consequently, modern research focuses on developing designs that reduce shock-wave intensity, improving engine efficiency, and using advanced materials that are lighter and more resistant to heat. With continued progress in aerodynamics, propulsion technologies, and materials science, supersonic aircraft may undergo further development, making high-speed air travel more efficient and sustainable. The success of these technologies depends on achieving a balance between speed, safety, economic feasibility, and environmental impact, paving the way for a new era in the future of civil and military aviation. Assist. Lecturer Al-Buraq Haider Mohsen