Object Details
- Manufacturer
- Humber Ltd. (Coventry, England)
- Designer
- W. O. Bentley
- Physical Description
- Type: Rotary, 9 cylinders, air-cooled
- Power rating: 112 kW (150 hp) at 1,250 rpm
- Displacement: 17.3 L (1053 cu in.)
- Bore and Stroke: 120 mm (4.72 in.) x 170 mm (6.69 in.)
- Weight: 184 kg (405 lb)
- Summary
- Initially asked in 1914 to study an overheating problem in rotary engines, Captain W. O. Bentley, an established car designer, developed a new and more efficient engine, with a weight-saving effect realized by careful design and the use of aluminum wherever possible. Equally important was the lower cost, as compared to the French Clerget, then widely used in British aircraft; and itself considered an improvement over the earlier Gnome
- The initials A. R. 1 stood for Admiral Rotary 1, and was later renamed Model B. R. 1 for Bentley Rotary 1. The Humber Company of Coventry, England was the first to build the B. R. 1, and a larger model, known as the B. R. 2, was also manufactured by other firms. The A. R. 1 was used on aircraft such as the Sopwith F.1 Camel, Sopwith 7 F.1 Snipe, and Avro 504K.
- Credit Line
- Transferred from the U.S. Navy Department, Washington, D.C.
- 1917
- Inventory Number
- A19270007000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Reciprocating & Rotary
- Dimensions
- Diameter 107 cm (42 in.), Length 111 cm (43.5 in.)
- Country of Origin
- United Kingdom
- See more items in
- National Air and Space Museum Collection
- National Air and Space Museum
- Record ID
- nasm_A19270007000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv98e20a57b-cab8-4a7a-9f86-b86fa998aba7
