The Kawasaki Ki-78 was a high-speed research aircraft developed to investigate laminar profile wings with high wing loadings. Early in 1938, a high-speed research program was started at the Aeronautical Research Institute of the University of Tokyo for a small, single-seat aircraft.

ki-78是日本陆军X系列验证机之一，为研究高速液冷发动机战斗机而制造的研究机，1942年试飞，是日军当时速度最快的飞机，战后被美国缴获。 网页 新闻 贴吧 知道 网盘 图片 视频 地图 文库 资讯 采购 百科

2021年5月19日 · 因为这是他们继长距离记录机（航研机）、最高升限试验机（吕式B型）之后研制的第三种验证机，因此被称为“研三”机，陆军代号Ki-78。 图3.研三机，看起来很像He100

2024年11月3日 · 国外静态比例模型玩家制作的Ki-78模型，图中可以清楚看到位于机头的散热开口、位于左侧翼根的涡轮增压进气口和机体中后侧凸起上的纵向散热进气口

2021年12月29日 · 為了適應高速飛行需求，Ki-78採用了當時日本最新研究出的「LB翼」型層流翼型，由於擔心在機翼製造過程中用於固定的鉚釘或其他凸起會在飛行過程中產生渦流從而增加阻力，因此在設計初期曾有整體鑄造成型的激進提議，不過受制於強度不足等原因

2012年11月3日 · The Kawasaki Ki-78 was a high-speed research aircraft and possible world speed record contender. First flown in 1942, the aircraft experienced numerous difficulties, and its performance did not live up to expectations.

On 27 December, 1943, during its 31st flight, the Ki-78 reached a maximum speed of 699.6 km/h (434.9 mph) at 3,527 m (11,539 ft). This was considerably less than the speed of 850 km/h (528 mph) which had been set as the ultimate goal for the programme.

The Ki-78 was an all-metal, low wing monoplane of conventional layout. The small streamlined fuselage was made as narrow as possible and was 26 ft 7 in (8.1 m) long. The wings possessed a laminar flow airfoil with a span of 26 ft 3 in (8 m) and an area of 118.4 sq ft (11 sq m).

Ki-78 Ken III (Kensan III) is an experimental high-speed aircraft designed to study the properties of a laminar wing at high wing loads. In early 1938, a high-speed research program for a small single-seat aircraft was launched at the Institute of Aviation Research, University of Tokyo.

2023年4月2日 · With World War II breaking out, the project was commandeered by the Imperial Japanese Army, which saw the Kensan III as a potentially valuable asset to warfare. Now renamed the Ki-78, the...