Armstrong Siddeley Leopard

The Armstrong Siddeley Leopard was a British 14-cylinder twin-row air-cooled radial aero engine developed in 1927 by Armstrong Siddeley. It was the most powerful radial engine in the world when introduced.

Variants

 * Leopard I
 * 700 hp, medium supercharged. Direct drive propeller.


 * Leopard II
 * 700 hp, geared epicyclic drive.


 * Leopard III
 * 800 hp, two-valve cylinder head, direct drive.


 * Leopard IIIA
 * 800 hp, geared epicyclic drive.

Applications

 * Blackburn Iris
 * Junkers Ju 52
 * Hawker Dantorp
 * Hawker Horsley