La5

La-5 is a Soviet single-seat fighter aircraft produced by the Lavochkin design bureau during World War II. It entered service in 1942 as an improved successor to the LaGG-3, with the goal of delivering better performance, reliability, and handling on the Eastern Front.

Design and development emphasized a more powerful engine, redesigned aerodynamics, and increased airframe robustness. The La-5 used the Klimov VK-105 liquid-cooled engine, along with a larger wing and reinforced structure to improve climb and high-speed performance. Its cockpit and systems were updated for easier maintenance in frontline conditions. Armament typically consisted of a 20 mm cannon and several machine guns, with later iterations refining gun positions and firing rates.

Operationally, the La-5 became a standard Soviet fighter on the front lines, offering improved balance and survivability compared with earlier Lavochkin designs. It performed effectively in medium-altitude engagements and contributed to Soviet air superiority efforts against German aircraft, including fighters and bombers. Throughout 1944 and 1945, various refinements led to higher-performance variants that extended its frontline usefulness.

Variants and legacy include several improved forms, such as La-5F and La-5FN, which incorporated refinements in aerodynamics, cooling, and armament. By the end of World War II, the La-5 was gradually superseded by the La-7 but remained in limited service for some time. The aircraft is regarded as a key step in the Soviet fighter program, representing a transition from earlier Lavochkin designs to more capable postwar fighters.