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Nakajima Ki-49 (Helen) Army Type 100 Heavy Bomber (Donryu)
Technical Information

Background
Built by Nakajima, designated the Type 100 Ki-49 Donryu (Storm Dragon). The Ki-49 was better armored, carried substantial defensive armament, and had self-sealing fuel tanks. It was the first Army bomber with a manned tail position. This bomber was intended as a replacement for the Ki-21 Sally, it fell short of performance expectations and served alongside instead.

Wartime History
During February 1942 the Donryu began its operational career with a series of high altitude raids against Darwin.

Ki-49-II
The Ki-49-II model was at one point the most widely used JAAF bomber, also used in transport and anti-submarine and later kamikaze roles.

Production
A total of 819 were built by Nakajima at Ota and Tachikawa.

References
Ki-49 Tail Turret - Did the Type 100 Heavy Bomber Really Have a Tail Turret? by Jim Long, 2002 revised June 2011

Technical Details (Ki-49-II)
Crew  Eight (pilot, co-pilot, navigator, bombardier, radio, three gunners)
Span  22.424m
Length  16.5m
Height  4.25m
Maximum Speed  306 mph at 16,405'
Range  (normal) 1,243 miles (maximum) 1,833 miles
Armament  (dorsal) 20mm Ho-1 cannon (nose, 2 x waist, tail) 7.7mm machine guns
Bomb Load  (bomb bay) 1,653 lbs (maximum) 2,205 lbs (suicide) 3,527 lbs
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