Tiltrotors, such as the V-22 Osprey convertiplane, are generally noisy. SO.1310 Farfadet was an experimental French convertiplane of the 1950s. The Convertiplano is a cancelled Brazilian convertiplane project. Finally, the aircraft became the first vehicle in the convertiplane series as the XV-1. However, a number of nearby municipalities banned the Convertiplane from their airspace. The convertiplane featured a single Continental-built R-975 radial piston engine that powered twin air compressors.