Bell MV-75 Official Designation Given To Future U.S. Army Tiltrotor Assault Aircraft.Official Today! MV-75 Named to Future U.S. Army Tiltrotor Assault Aircraft.The U.S. Army’s Future Long-Range Assault Aircraft (FLRAA) tiltrotors will be designated MV-75s, the service announced today at the Army Aviation Association of America’s annual Mission Solutions Summit.Exploring the amazing history of fighter planes, experimental aircraft, and military history. If you are fan of aviation you’ve come to the right place!