Nakajima Ki-49 Donryu
ManufacturerNakajima
The Nakajima Ki-49 Donryū (呑龍, "Storm Dragon") was a twin-engine heavy bomber designed and produced by the Japanese aviation manufacturer Nakajima Aircraft Company. Operated by the Imperial Japanese Army Air Service (IJAAS) as the Army Type 100 Heavy Bomber Model 1, it was known to the Allied by the reporting name "Helen".
The design of the Ki-49 was greatly shaped by a forerunning bomber operated by the IJAAS, the Mitsubishi Ki-21. Specifically, officials came to recognise that, no matter how advanced the Ki-21 may have been at the time of its introduction, it would not be long before the bomber would be unable to operate without support from friendly fighters. Accordingly, in 1938, a specification for a replacement bomber was issued, which stipulated that such an aircraft should have the speed and defensive weaponry to enable it to operate independently, even during daylight bombing missions, without the protection of escort fighters. Consequently, the Ki-49 was furnished with formidable defensive armament and armor, although these features restricted the Ki-49 to payloads comparable to those of lighter medium bombers – the initial production variant could carry only 1,000 kg (2...
The design of the Ki-49 was greatly shaped by a forerunning bomber operated by the IJAAS, the Mitsubishi Ki-21. Specifically, officials came to recognise that, no matter how advanced the Ki-21 may have been at the time of its introduction, it would not be long before the bomber would be unable to operate without support from friendly fighters. Accordingly, in 1938, a specification for a replacement bomber was issued, which stipulated that such an aircraft should have the speed and defensive weaponry to enable it to operate independently, even during daylight bombing missions, without the protection of escort fighters. Consequently, the Ki-49 was furnished with formidable defensive armament and armor, although these features restricted the Ki-49 to payloads comparable to those of lighter medium bombers – the initial production variant could carry only 1,000 kg (2...
