Category
page 1Quadrotors
X-19
1963 experimental tiltrotor aircraft by Curtiss-Wright
PA-97 Heli-Stat
experimental helicopter/airship by Piasecki Aircraft
Bell Boeing Quad TiltRotor
proposed four-rotor derivative of the V-22 Osprey
VZ-7
1958 quadrotor helicopter prototype model by Curtiss-Wright
AeroVelo Atlas
Human powered helicopter built for the Igor I. Sikorsky Human Powered Helicopter Competition
Breguet-Richet Gyroplane
experimental gyroplane family
SkyHook JHL-40
type of aircraft
Bayraktar VTOL
Unmanned aerial vehicle