The Armstrong Siddeley Cheetah is a seven-cylinder British air-cooled aircraft radial engine of 834 cu in (13.65 L) capacity introduced in 1935 and produced until 1948.

[1] The Cheetah was used to power many British trainer aircraft during World War II including the Avro Anson and Airspeed Oxford.

Initially only direct-drive variants were produced with later engines being made available with propeller reduction gear of various ratios.

It was the first engine of its type to be certified for 1,200 hours of operational time between overhauls (TBO), with over 37,200 examples built.

[6][7] Preserved Armstrong Siddeley Cheetah engines are on public display at the following museums: Data from [10] Related development