Blackburn Aeroplane and Motor Co: Cirrus
Note: This is a sub-section of Blackburn Aeroplane and Motor Co.
ADC Cirrus engines were originally built by ADC Aircraft until Cirrus Aero Engines Limited was formed in 1927. The company became Cirrus-Hermes in 1931 when it was bought by the Cirrus Hermes Engineering Co and later became the Cirrus Engine Section of Blackburn Aircraft Limited in 1937, operating as a separate division until production ended in the post-World War II era.
The first Cirrus engine has been the 90 hp (67 kW) Cirrus I, which passed its 50-hour type rating in 1925. It was the first air-cooled inline engine, a design by Frank Halford that proved extremely popular for light aircraft. The basic layout (using one cylinder bank of an ADC Airdisco V-8 engine) was quickly copied by a number of other manufacturers. Later versions, named the Cirrus II and Cirrus III, were produced each with slightly greater displacement, and power (Cirrus II - 85 hp, Cirrus III - 90 hp).[1]
See Also
Sources of Information
- AA. [1] Image courtesy of Aviation Ancestry