Bristol Pegasus is a British aircraft engine designed and produced by Bristol Aeroplane Company in the 1930s. It is a supercharged, air-cooled, radial engine that was primarily used in military aircraft during World War II. The engine is known for its reliability and performance, making it suitable for various applications. The Bristol Pegasus engine powered several notable aircraft, including the Bristol Beaufighter and the Bristol Blenheim. Its design features a unique configuration with nine cylinders arranged in a radial pattern, contributing to its efficient operation. The engine played a significant role in the development of aviation technology during its time.