| Mercury | |
|---|---|
| |
| The Cosmos Mercury | |
| Type | Radial aero engine |
| Manufacturer | Cosmos Engineering Brazil Straker |
| Designer | Roy Fedden |
| First run | July 1917 |
| Major applications | Bristol Scout F |
The Cosmos Mercury was a fourteen-cylinder twin-row air-cooled radial aeroengine. Designed by Roy Fedden of Cosmos Engineering, it was built in the United Kingdom in 1917. It produced 347 horsepower (259 kW). It did not enter production; a large order was cancelled due to the Armistice.