Nakajima Ki-49 ‘Helen’ UnitsA fully illustrated study of the Nakajima Ki 49 Helen, the twin engined bomber of the Pacific War, from Japanese aviation expert George Eleftheriou. The Nakajima Ki 49 Donryu (Dragon Eater), codenamed Helen by the Allies, was a twin engined Japanese bomber designed to undertake daylight attacks without the protection of escort fighters. Consequently, while it was officially known as the Army Type 100 Heavy Bomber, its formidable defensive armament and