Clerget 9 A Diesel, Radial 9 Engine
date: label: Date
content: Circa 1928
name: label: Designer
content: Clerget, Blin and Cie
label: Manufacturer
content: Panhard-Levassor
notes: label: Physical Description
content: Type: Reciprocating, 9 cylinders, single row, radial, air cooled, diesel
label: Physical Description
content: Power rating: 74.6 kW (100 hp) at 1,800 rpm
label: Physical Description
content: Displacement: 16.3 L (992 cu in)
label: Physical Description
content: Bore and Stroke: 160 mm (6.3 in.) x 160 mm (6.3 in.)
label: Physical Description
content: Weight: 228 kg (503 lb)
label: Summary
content: Pierre Clerget was inspired by the Gnome to produce a supposedly improved rotary engine in 1911. It was a 7-cylinder, 11.88 liter (725 cu in) engine rated at 60 kW (80 hp) at 1,200 rpm. Thousands of these engines were manufactured in France and Britain. Larger 9-cylinder rotary engines began production in 1913. In the 1920s, Clerget transitioned to 4-stroke diesel engines, which initially had dimensions similar to the rotaries.
label: Summary
content: The Clerget 9A was built by Clerget, Blin, and Cie of Paris, France, with development beginning in 1928. On September 28, 1929, in a Morane 135 aircraft, it became the first diesel aircraft engine to fly in France. This engine was followed by the 149 kW (200 shp) 9B in 1930, the 186 kW (250 shp) 9Br (which was reversible in flight) in 1931, and the 224 kW (300 shp) 9C in 1932.
place: label: Country of Origin
content: France
setName: label: See more items in
content: National Air and Space Museum Collection
creditLine: label: Credit Line
content: Gift of the Musee de L' Air
dataSource: label: Data Source
content: National Air and Space Museum
identifier: label: Inventory Number
content: A19721334000
objectType: label: Type
content: PROPULSION-Reciprocating & Rotary
objectRights: label: Restrictions & Rights
content: CC0
physicalDescription: label: Materials
content: Steel, Aluminum, Preservative coating, Brass
label: Dimensions
content: Overall: 110.5 × 81.3 × 110.5cm (43 1/2 × 32 × 43 1/2 in.)
label: Dimensions
content: Storage: 139.7 × 116.8 × 129.5cm (55 × 46 × 51 in.)