The North American Aviation P-51 Mustang is an American long-range, single-seat fighter and fighter-bomber used during World War II.The Mustang was designed to use the Allison V-1710 engine, which had limited high-altitude performance in its earlier variants.
The aircraft was first flown operationally by the RAF as a tactical-reconnaissance aircraft and fighter-bomber (Mustang Mk I).Take an in-depth look inside a North American P-51D fighter plane from the World War II era.
The definitive version, the P-51D, was powered by the Packard V-1650-7, a license-built version of the two-speed, two-stage-supercharged Merlin 66, and was armed with six .50 caliber (12.7 mm) AN/M2 Browning machine guns.
The other feature was a new cooling arrangement positioned aft (single ducted water and oil radiators assembly) that reduced the fuselage drag and effects on the wing. Later, after much development, they discovered that the cooling assembly could take advantage of the Meredith effect, in which heated air exited the radiator with a slight amount of jet thrust.