Fairey P.16 Prince (H-16)
The Fairey P.16 Prince was a British experimental 1,500 hp (1,118 kW) class H-16 aircraft engine designed and built by Fairey in the late 1930s.
The Prince P.16 was a radical design by Captain A.G. Forsyth who was the Fairey company's chief engine designer. Similar in layout to the Napier Rapier, the cylinders were arranged vertically in two separate blocks, driving contra-rotating propellers via separate shafts and gears. Each bank of cylinders could be shut down in flight to drive only one propeller, an idea that was reused much later in the Armstrong Siddeley Double Mamba turboprop. First run in 1939, the engine was test flown in a Fairey Battle.
P.16 Prince 3 / Prince H-16S