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The Mitsubishi Ha-43, known as the Ha-211 by the Imperial Japanese Army Air Force (IJAAF) and MK9 by the Imperial Japanese Navy Air Service (IJNAS)), was a Japanese 18-cylinder, twin-row air-cooled radial engine developed during World War II. It was a more powerful derivative of Mitsubishi's 14-cylinder Kinsei. While planned for use in several promising aircraft, only prototypes were made and the engine never saw combat.
The Ha-43 was Mitsubishi's answer to Nakajima's Ha-45. The engine was planned to produce 2,200 hp (1,600 kW) while retaining high reliability and a superior power-to-weight ratio compared to contemporary engines in its class. The frontal area per hp. was also intended to be the smallest in the world. However, such ambitious targets necessitated extraordinary efforts and ingenuity at the same time.
At the time, Mitsubishi was working to promote a different engine, the Ha-42 (an 18-cylinder derivative of the Kasei), development of which was prioritized above the Ha-43's, delaying its completion. Consequently, the Ha-45 entered service first, albeit plagued with reliability issues, which would also trouble the Ha-43. Numerous promising aircraft, such as the Kyushu J7W interceptor and Mitsubishi's own A7M Reppu fighter, were planned to use the Ha-43, but in the end, such aircraft did not see service before Japan's surrender, nor did the engine itself.
^ abGoodwin, Mike; Starkings, Peter (2017). Japanese Aero-Engines 1910-1945. Sandomierz, Poland: MMP Books / Stratus Sp.J. pp. 175–176. ISBN978-83-65281-32-6.
January 21, 2023
mitsubishi, this, article, relies, largely, entirely, single, source, relevant, discussion, found, talk, page, please, help, improve, this, article, introducing, citations, additional, sources, find, sources, news, newspapers, books, scholar, jstor, february, . This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Mitsubishi Ha 43 news newspapers books scholar JSTOR February 2019 The Mitsubishi Ha 43 known as the Ha 211 by the Imperial Japanese Army Air Force IJAAF and MK9 by the Imperial Japanese Navy Air Service IJNAS was a Japanese 18 cylinder twin row air cooled radial engine developed during World War II It was a more powerful derivative of Mitsubishi s 14 cylinder Kinsei While planned for use in several promising aircraft only prototypes were made and the engine never saw combat Ha 43Type 18 cylinder two row radial aircraft engineNational origin JapanManufacturer Mitsubishi Heavy Industries Contents 1 Design and development 2 Variants and designations 3 Applications 4 Specifications Ha 43 Ha 211 MK9 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 ReferencesDesign and development EditThe Ha 43 was Mitsubishi s answer to Nakajima s Ha 45 The engine was planned to produce 2 200 hp 1 600 kW while retaining high reliability and a superior power to weight ratio compared to contemporary engines in its class The frontal area per hp was also intended to be the smallest in the world However such ambitious targets necessitated extraordinary efforts and ingenuity at the same time At the time Mitsubishi was working to promote a different engine the Ha 42 an 18 cylinder derivative of the Kasei development of which was prioritized above the Ha 43 s delaying its completion Consequently the Ha 45 entered service first albeit plagued with reliability issues which would also trouble the Ha 43 Numerous promising aircraft such as the Kyushu J7W interceptor and Mitsubishi s own A7M Reppu fighter were planned to use the Ha 43 but in the end such aircraft did not see service before Japan s surrender nor did the engine itself Variants and designations EditData from Japanese Aero Engines 1910 1945 1 A20 Company designation Ha 211 IJAAF designation MK9 IJNAS designation Ha 43 Unified IJAAF and IJNAS designation systemApplications EditKawanishi N1K5 J project not built Kyushu J7W1 Mansyu Ki 98 Mitsubishi A7M2 A7M3 Mitsubishi J4M Mitsubishi Ki 83Specifications Ha 43 Ha 211 MK9 EditData from Japanese Aero Engines 1910 1945 1 General characteristics Type 18 cylinder air cooled two row radial piston engine Bore 140 mm 5 5 in Stroke 150 mm 5 9 in Displacement 41 7 L 2 546 cu in Length 2 020 mm 79 5 in Diameter 1 230 mm 48 4 in Dry weight 980 kg 2 161 lb Components Supercharger Centrifugal two speed mechanical superchargerPerformance Power output 1 641 kW 2 200 hp at 2 900 rpm Compression ratio 7 2 boost 350 mm HgSee also EditRelated lists List of aircraft enginesReferences Edit a b Goodwin Mike Starkings Peter 2017 Japanese Aero Engines 1910 1945 Sandomierz Poland MMP Books Stratus Sp J pp 175 176 ISBN 978 83 65281 32 6 Retrieved from https en wikipedia org w index php title Mitsubishi Ha 43 amp oldid 1122508828, wikipedia, wiki, book, books, library,
