The article mentions rotorcraft, but I would imagine the technology works for propellers just as well, wouldn't it? And many drones in the army are exactly as

The article mentions rotorcraft, but I would imagine the technology works for propellers just as well, wouldn't it? And many drones in the army are exactly as pictured, propeller driven fixed wing aircraft. I agree it does seem to be confusing as to exactly what this applies to though. The wording says one thing, but the picture and common sense seem to indicate it may not be as specific as that? /shrug