From my understanding, a gyroplane (autogyro):
- Is a rotocraft.
- Uses an unpowered rotor for lift generation, instead of wings.
- Uses a propeller for horizontal translation like an airplane.
- Cannot take off vertically or hover contrary to an helicopter.
- Can land vertically like an helicopter using rotor inertia.
- Maybe simpler to build and maintain than an helicopter or an airplane.
Are gyroplanes a technology that works but without particular application? Or do gyroplanes have well known uses for which they have significant advantages over airplanes and helicopters?