maybe the world's smallest autorotation
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not much energy there aye
heliboy89 2 years ago
oh sorry I got confused over your heli. The CX2 I had in mind is a coax :-)
I agree, a "proper" autorotation would maintain headspeed by using negative pitch, but it doesn't work too well with this small heli. I've had some emergency landings from 10..30 meters with a broken belt without further damage, but they weren't pretty...
mnentwig 3 years ago
OK, the CP2 can't "properly" autorotate because even if it's CP it has no one-way bearing, you can't control motor + pitch independently (it's CCPM with a preset pitch curve), and has zero tail control with the tail motor off. Killing the throttle at hover height results however in a "pseudo" autorotation, with the pitch of the blades remaning positive enough to convert inertia into lift, and so landing somewhat softly. Of course, it also starts spinning when doing that :-(
Velktron 3 years ago
Thanks for the detailed reply, however I'm not a (complete) noob when it comes to rc helicopters, I fly a Honey Bee CP2 (that's a CP heli with an ETRM). I also know what an autorotation is...well...at least some people would only classify "full down, controlled autorotations" as "true" autorotations, e.g. with headspeed, negative pitch, controlled gliding, then flaring + positive pitch...what you did is more like killing the throttle while in a hover. Is there a name for that kind of auto?
Velktron 3 years ago
errr....what's the boundary between an autorotation and just killing the throttle at a low height, in this case? I've done a rough "autorotation" with my CP2 by quickly closing the throttle at a small height, but I don't know if that's the real thing...
Velktron 3 years ago 2
Great !!
maki211971 3 years ago
wow that thing loses head speed quick.
peisen 3 years ago
And then again, maybe not.
Jetleaf 3 years ago