The Nakajima Ha219, (also known as the Ha-44 under the unified designation system, BH by the company and NK11A by the

Imperial Japanese Navy Air Service The was the Naval aviation, air arm of the Imperial Japanese Navy (IJN). The organization was responsible for the operation of naval aircraft and the conduct of aerial warfare in the Pacific War. The Japanese military acquired their first air ...

(IJNAS)), was a late war Imperial Japanese Army Air Force (IJAAF) 18-cylinder air-cooled radial engine, used on the Tachikawa Ki-94-II, Nakajima Ki-84-N and Nakajima Ki-87.

Variants and designations

''Data from:'' Japanese Aero-Engines 1910-1945 ;BH: Company designation ;Ha219: IJAAF Hatsudoki designation ::Ha219Ru fitted with a large turbo-charger alternative designation for the Ha-44 model 12 ;Ha-44: Unified (IJAAF & IJNAS) designation system ::Ha-44 model 11 A prototype turbocharged engine for the Ki-87. ::Ha-44 model 12 Similar to the Model 11 and probably sporting a 16-bladed cooling fan in the cowling intake. ::Ha-44 model 13 A planned variant to power the

Navy 20-shi A Carrier Fighter A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It inc ...

;NK11A: Planned engines for a scaled down

Nakajima G10N1 The Nakajima G10N ''Fugaku'' (Japanese: 富岳 or 富嶽, "Mount Fuji") was a planned Japanese ultra-long-range heavy bomber designed during World War II. It was conceived as a method for mounting aerial attacks from Japan against industrial tar ...

(Navy Experimental Heavy Bomber ''Fugaku'') (''Fugaku'' -

Mount Fuji , or Fugaku, located on the island of Honshū, is the highest mountain in Japan, with a summit elevation of . It is the second-highest volcano located on an island in Asia (after Mount Kerinci on the island of Sumatra), and seventh-highest p ...

)

Applications

A total of around 10 engines were built, but the engine suffered from over-heating at low speeds and required large amounts of maintenance. Around 7 were issued to the Kitai squadron in late 1945 and used on the new Ki-84-N, lacking the supercharger installed on the Ki-94-2 and Ki-87. most are believed to have been scrapped or destroyed after the war along with documentation. * Nakajima Ki-87 *

(Navy Experimental Heavy Bomber ''Fugaku'') * Nakajima Ki-84-N * Tachikawa Ki-94-2

Specifications (Ha219 / BH / NK11A / Ha-44)

References

{{Imperial Japanese Navy aero engines Aircraft air-cooled radial piston engines 1940s aircraft piston engines Nakajima aircraft engines