Britten-Norman Islander G-FANS engaged in flight tests of its Dowty ducted propulsors which are driven by two 300-h.p. Lycoming IO-540 engines

Close-up of the ducted propulsor showing the 48-in.-dia. seven-bladed fan.

Layout of the powerplant as installed on Islander G-FANS

RFB/Grumman American Fanliner D-EBFL with integral ducted propeller

Cessna XMC research aircraft N7174C with a shroud around its propeller (100 hp Continental O-200-A engine)