Messerschmitt Me 609
The Messerschmitt Me 609 (alternatively Me 309 Zwilling) was a World War II German project which joined two fuselages of the Me 309 fighter prototype together to form a heavy fighter. == Design and development == The project was initiated in response to a 1941 Reich Air Ministry requirement for a new Zerstörer (destroyer) to replace the Bf 110 in a minimum time and with a minimum of new parts.