Hitachi Hatsukaze 11, Ha 11 Model 11, Inverted In-line 4 Engine
date: label: Date
content: 1941
name: label: Designer
content: Hirth-Motoren G.m.b.H.
label: Manufacturer
content: Hitachi
notes: label: Physical Description
content: Type: Reciprocating, 4 cylinders, inverted, in-line, air-cooled
label: Physical Description
content: Power rating: 82 kW (110 hp) at rpm
label: Physical Description
content: Displacement: 3.97 L (242.44 cu in)
label: Physical Description
content: Bore and Stroke: 105 mm (4.13 in.) x 115 mm (4.53 in.)
label: Physical Description
content: Weight (dry): 116 kg (256 lb)
label: Physical Description
content: Note: Description for Hirth HM4/HM-504A.
label: Summary
content: The Japanese conglomerate Hitachi manufactured aircraft engines from about 1929 until the end of World War II, with a concentration on low-power seven and nine cylinder radials and inverted inline fours. The Hitachi Aircraft Company was formed in 1939 to take over the aircraft and aero-engine branches of the Tokyo Gasu Denki K.K. or Tokyo Gas & Electric Co., Ltd. Many, if not most, Japanese military trainers were powered by Hitachi copies of German designed Hirth air-cooled inline engines.
label: Summary
content: The Hitachi Hatsukaze powered the Kyushu K9W1 (Allied Code Name Cypress) Navy Type 2 Primary Trainer Model 11, and the similar Army version Kokusai Ki-86, Type 4 Primary Trainer aircraft. The engine was a derivative, licensed copy of the Hirth HM-504A, which powered the Bucker Bu 131 Jungmann aircraft. There were 541 Hatsukaze engines built during World War II between 1941 and 1943.
place: label: Country of Origin
content: Japan
setName: label: See more items in
content: National Air and Space Museum Collection
creditLine: label: Credit Line
content: Gift of Major Thomas L. Walker
dataSource: label: Data Source
content: National Air and Space Museum
identifier: label: Inventory Number
content: A19480175000
objectType: label: Type
content: PROPULSION-Reciprocating & Rotary
objectRights: label: Restrictions & Rights
content: CC0
physicalDescription: label: Materials
content: HAZMAT: Magnesium
label: Materials
content: Aluminum, Paint, Steel, Brass, Rubber, Phenolic, Copper, Textile
label: Dimensions
content: Length 118.0 cm (46.44 in.), Width 44.2 cm (17.38 in.), Height 66.4 cm (26.13 in.)
label: Dimensions
content: Approximate (Weight on Stand): 234.1kg (516lb.)