> Cool folding prop (but scary - if it doesn't unfold properly, it could make quite a mess).
Hard to tell from the video alone, but the rotor look just like my RC helicopter's: blades attached to the hub by one gudgeon pin each. If that's the case, centrifugal force alone is enough to align them perfectly †; no solenoid nor manual action needed ever. If that's the case, there's virtually no way those could fail, except for total disintegration. Pretty standard construction for small, two-bladed helis.
Way cooler is that they can get away without flybar -- perhaps autogyros don't ever need one?
† there's some forward-backward play of the blade as it changes attack angle and relative airspeed during rotation, but that's another matter.
Hard to tell from the video alone, but the rotor look just like my RC helicopter's: blades attached to the hub by one gudgeon pin each. If that's the case, centrifugal force alone is enough to align them perfectly †; no solenoid nor manual action needed ever. If that's the case, there's virtually no way those could fail, except for total disintegration. Pretty standard construction for small, two-bladed helis.
Way cooler is that they can get away without flybar -- perhaps autogyros don't ever need one?
† there's some forward-backward play of the blade as it changes attack angle and relative airspeed during rotation, but that's another matter.