Bristol Aquila

Aquila
Type Piston aircraft engine
Manufacturer Bristol Aeroplane Company
First run 1934
Major applications Bristol Bulldog
Bristol Bullpup

The Aquila was a nine-cylinder single-row radial aircraft engine designed by the Bristol Engine Company starting in 1934. A sleeve valve engine, its basic design was developed from the Bristol Perseus. The Aquila was never used in production, but further developments led to the Bristol Hercules, Bristol Taurus, and Bristol Centaurus.