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Kawasaki Ki-48 Sokei (Lily)

1940 COLD WAR WORLD WAR 2

History

The Kawasaki Ki-48 proved to be a viable twin-engine light bomber for the Japanese Army during World War II (1939-1940). Kawasaki, already working on the introduction of the famous twin-engine Ki-45 "Toryu" heavy fighter, turned its attention to a request from the Imperial Japanese Air Force (IJAAF) for a twin-engine aircraft modeled after the rapidly manufactured light bomber.

The primary quality of a mount is speed, so the IJAAF was looking for an airframe that could reach 300 mph and operate at altitudes in excess of 16,000 feet. The result of Kawasaki became the Ki-48 model and was dubbed "Lily" by the Allies.

After passing the required tests and evaluations, the Ki-48 fought against Chinese forces during Japan's westward expansion (Second Sino-Japanese War (1937-1945)) in 1940. The aircraft follows the outgoing Kawasaki Ki-32 series (Allied codename "Mary"), a 1938 single-engine low-wing monoplane with fixed-leg fairings. The newer Ki-48 stood out for its inherent speed, which was generally good at the time.

However, the design was limited in a number of waysits bomb load was light (about 1,700 pounds), and it generally lacked armor protection for the crew and critical systems (the latter controlling operational weight). Speed ??is its key quality, so the Ki-48 didn't disappoint in the early stages.

The aircraft's light bomber role was later expanded to include appropriately modified dive bombs (reinforced fuselage, dive brakes).

Outside of the Chinese front, the Ki-48 was in service with all major areas of the Japanese Air Force. These include invasion attacks on the Philippines, Burma and New Guinea. Over time, however, with the advent of improved Allied fighter designs, the Ki-48's real limitations in performance and structure became apparent. The Ki-48 can be shut down by interceptors that dominate the theater, such as the famous American Vought F4U Corsair and Grumman F6F Hellcat. The lack of adequate armor on key Ki-48 components meant the aircraft could be under pressure from Allied machine guns or land/water-based anti-aircraft guns (AA).

Their bomb load limited them tactically, and improved Allied tactics made them obsolete by the end of the war in 1945. Still, as the noose of various Japanese possessions tightened, the old planes fought back as soldiers until the last year of the war. Some remained in service during the Battle of Okinawa (Allied victory), while other surviving airframes were converted into "Kamikaze" (suicide) aircraft, stripped of most of their combat capability and weight, while equipped with explosives loaded .

The original prototype models (No. 4) were simply registered as "Ki-48" and these models were powered by 2 x Nakajima Ha. 25 series radial engines, 950 hp each. After modifications to the tail unit, five pre-series models were constructed and evaluated.

The original production mount, designated the Ki-48-Ia, was released in 1940. The Ki-48-Ib took this form and was designed to improve upon the Ia's meager defensive weapon. The total production of the Ki-48-I was 557 units.

As its design limitations began to emerge, the Ki-48-II was brought into three prototypes for testing. This resulted in the April 1942 Ki-48-IIa having a longer fuselage, more space inside the bomb, enhanced armor protection and better engine performance. The IIa model is powered by 2 Nakajima Ha. 115 Series Meridian, each rated at 1,130 hp.

Top speed is 314 mph, range is 1,500 miles, and service is capped at 33,135 feet. Production of Series II models included the Ki-48-IIb, which became a purpose-built dive bomber with dive brakes. The Ki-48-IIc introduced an improved defensive armor package in 1943.

Serial production of the Ki-48-II brought 1,408 units.

Total Ki-48 production reached 1,997 units.

As a kamikaze aircraft, the Ki-48 underwent minor modifications to the existing airframe during the conversion process - the aircraft was equipped with 1,700 pounds of explosives and flown to its final destination with a minimal crew (usually two) . The kamikaze modification of the Ki-48 led to the designation of the Ki-48-II KAI type "Tai-Atari". Kawasaki went on to propose several other famous Ki-48 models that never came to fruition, including the Ki-81, an improved offshoot of the original Ki-48, and the Ki-174, a more aggressive single-seat attack platform.

Neither version appeared.

In addition to being used by the IJAAF, the Ki-48 was also used by the Chinese Nationalist Army through the 5th Squadron of the 6th Battalion against its former owner. These captured prototypes returned to combat after the end of the war and the rise of Communist China and continued to serve in China until 1952, when they were retired.

During the war, Indonesia recorded the use of the Ki-48 in the struggle for independence from the Netherlands (recognized in 1949). For the Japanese, the aircraft served in 20 flying groups and training facilities during World War II.

It was officially decommissioned at the end of the global conflict.