{"product_id":"kokusai-ki-105-ohtori-collection","title":"Kokusai Ki-105 Ohtori — Primary-Source Documentation Collection","description":"\u003ch3\u003eKokusai Ki-105 Ohtori — Primary-Source Documentation Collection\u003c\/h3\u003e\n\u003cp\u003eThe Kokusai Ki-105 Ohtori (大鵬, \"Phoenix\") was one of the most unconventional transport aircraft produced by Japan during the Pacific War — a twin-boom, motorized derivative of the Ku-7 glider, engineered out of desperate strategic necessity to address the acute fuel crisis gripping the home islands in 1944.\u003c\/p\u003e\n\u003ch3\u003eAerodynamic \u0026amp; Structural Design\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwin-Boom Layout:\u003c\/strong\u003e High-aspect-ratio main wing with a central pod nacelle housing the cockpit and cargo bay. The twin tail booms were slightly shortened from the Ku-7 glider variant to correct center of gravity with forward engine mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposite Construction:\u003c\/strong\u003e Central nacelle in lightweight aluminum alloy; wings and tail booms primarily wood to conserve strategic metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLanding Gear:\u003c\/strong\u003e Fixed heavy-duty tricycle undercarriage — four non-retractable main wheels on dual axles plus a single nose wheel — maintaining a level cabin floor for loading internal fuel bladders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngine Technical Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerplant:\u003c\/strong\u003e Two Mitsubishi Ha-26-II (Ha-102) 14-cylinder twin-row air-cooled radials, 940–960 hp each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRejected Option:\u003c\/strong\u003e Early designs considered the 450 hp Nakajima Ha-13; abandoned immediately due to severe power deficit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePropulsion:\u003c\/strong\u003e Three-blade constant-speed metal propellers mounted to the forward section of each tail boom.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHandling \u0026amp; Stability Studies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Surfaces:\u003c\/strong\u003e Fabric-covered wooden ailerons, elevators, and twin rudders adapted directly from glider blueprints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJapanese Army Assessment (December 1944):\u003c\/strong\u003e Test pilots considered the platform remarkably stable for its size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllied Evaluation:\u003c\/strong\u003e Retrospective flight safety journals noted the aircraft was sluggish, aerodynamically heavy to pilot, and highly vulnerable due to its slow cruise speeds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWingspan\u003c\/td\u003e\n\u003ctd\u003e35.00 m (114 ft 10 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e19.92 m (65 ft 4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Takeoff Weight\u003c\/td\u003e\n\u003ctd\u003e12,500 kg (27,600 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Freight Payload\u003c\/td\u003e\n\u003ctd\u003e3,300 kg (7,300 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCruising Speed\u003c\/td\u003e\n\u003ctd\u003e220 km\/h (140 mph \/ 120 kts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Range\u003c\/td\u003e\n\u003ctd\u003e2,500 km (1,600 miles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrew\u003c\/td\u003e\n\u003ctd\u003e2 pilots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Bulletins \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Sumatran Fuel Pipeline:\u003c\/strong\u003e Engineering bulletins designated the Ki-105 as a flying fuel tanker — flying unladen to Japanese-occupied oil fields in Sumatra, loading fuel reservoirs, and returning to Japan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency Deficit:\u003c\/strong\u003e Engineering estimates calculated that up to 80% of the loaded fuel cargo would be consumed by the engines on the return trip alone, rendering the concept operationally marginal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCollection Manifest\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Manuals: 2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKi-105 Aircraft Handbook:\u003c\/strong\u003e Kokusai Ki-105 Ohtori — Detailed Design Specifications, 設計明細書 キ一○五 (Japanese Language)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKi-105 Photo Archive:\u003c\/strong\u003e Ki-105 Photographic Collection (English Language)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003eThis is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.\u003cbr\u003eLiving Collections with Free Lifetime Updates — Please review our Disclaimer and Export Notice before purchasing.\u003c\/p\u003e","brand":"Online Aviation Library","offers":[{"title":"Default Title","offer_id":53726819025243,"sku":null,"price":29.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4788\/3867\/files\/ki-105-leaderboard-sepia.png?v=1786034206","url":"https:\/\/onlineaviationlibrary.com\/products\/kokusai-ki-105-ohtori-collection","provider":"Online Aviation Library","version":"1.0","type":"link"}