The B-24 “Liberator” bomber is a heavy bomber put into use by the United States in World War II. It was developed by the United Aircraft Company. It was active on the Western Front, the China-Burma-India Theater and the Pacific Theater during the war. It participated in It has fought even more battles than the famous B-17 Flying Fortress bomber, because its bomb load and range are higher than the B-17

 In the 1930s ,      the U.S. Army Air Force already owned bombers such as the Boeing B-17 . However, the international situation at that time was not only Germany, which was rearmed by the Nazi Party, but also Japan, which had launched a war of aggression against China. At that time, the United States When the military realized that it was about to face these two potential opponents, the B-17 might still be insufficient, so in January 1939 , it asked the United Company to develop a heavy bomber with a larger bomb load and a longer range than the B-17 . United Company used its The developed MODEL-32 airframe and the wings of the MODEL-31 airship were used as a blueprint, so the development speed was very fast. On December 29 of the same year, the XB – 24 completed its first test flight. After that, Unity Company named it after the president’s nanny. “Liberator”. During World War II, a total of 18,482 Liberators were produced by 5 aircraft factories. The total production was the highest among various American bombers.

       The B-24 has a bomb bay that can carry 3,600 kilograms in its fuselage, so it has a large and wide fuselage. From a distance, it even looks a bit like an airship. The bomb bay is divided into two parts, the front and rear, by the wing spar. The bomb bay door is not a solid aluminum plate that opens downward but a thin aluminum sheet. It is pulled up like a curtain before dropping the bomb. The wings are used to maximize the structural strength of the fuselage. The high-shoulder wing is very slender in order to have good low-speed stability and be able to carry the most fuel. As for its tail, it adopts an H- shaped design. The XB-24 does not have a defensive machine gun , which was added to the actual combat version later. , in general, although the B-24 ‘s defensive machine guns have various designs, they also have many problems and are not as effective as the B-17 .

        The B-24 itself has a range of 322 kilometers further than the B-17 , and its front bomb bay can also be used to carry fuel. This is 966 kilometers longer than the B-17 , which also uses the bomb bay to carry fuel. The B-17 is already fully loaded. However, the B-24 can also carry bombs in the rear bomb bay, so the B-24 is more suitable as a long-range bomber than the B-17 .

        In addition to being used by the Air Force as a bomber during World War II, the B-24 was also used by the Navy as an anti-submarine patrol aircraft.