![The Mil V-12 a Soviet Union prototype Aircraft. It is the largest helicopter ever built. On display at the Central Air Force Museum in Moscow Stock Photo - Alamy The Mil V-12 a Soviet Union prototype Aircraft. It is the largest helicopter ever built. On display at the Central Air Force Museum in Moscow Stock Photo - Alamy](https://c8.alamy.com/zooms/6/c2431f1945d94a25aa9ed37464d284ea/2f1xjkj.jpg)
The Mil V-12 a Soviet Union prototype Aircraft. It is the largest helicopter ever built. On display at the Central Air Force Museum in Moscow Stock Photo - Alamy
![Cargo Helicopter V-12 (Mi-12) and Helicopter - Mi-1 Editorial Stock Image - Image of anniversary, designing: 33336664 Cargo Helicopter V-12 (Mi-12) and Helicopter - Mi-1 Editorial Stock Image - Image of anniversary, designing: 33336664](https://thumbs.dreamstime.com/b/cargo-helicopter-v-mi-helicopter-mi-moscow-august-near-plant-named-mil-august-moscow-russia-33336664.jpg)
Cargo Helicopter V-12 (Mi-12) and Helicopter - Mi-1 Editorial Stock Image - Image of anniversary, designing: 33336664
![Photos: Mil V-12 (Mi-12) Aircraft Pictures | Airliners.net | Aircraft pictures, Aviation, Helicopter Photos: Mil V-12 (Mi-12) Aircraft Pictures | Airliners.net | Aircraft pictures, Aviation, Helicopter](https://i.pinimg.com/originals/92/28/2f/92282fd38c110ef155ee1b433ac22537.jpg)