October 1960. : 619 [2023-11-10]. (原始内容存档于2015-11-17). Winter, Frank H. DuctedFan or the World's First Jet Plane? The Coanda claim re-examined. The Aeronautical
1977, a single standard BN-2 was re-engined with Dowty Rotol ducted fans. The ductedfan produced less noise than conventional propeller propulsion. Some