Low Speed Autorotation

No description available.

Category:

Science & Technology

Tags:

• Low
• Speed
• Autorotation

[mhale71]

@MotoXracer450 In full size helis we dont go to negative pitch, the collective is dumped as a reaction to the auto, but you still have to stabalise the revs without overspeeding it, this usually involves pulling more collective in which also slows the descent, The initial action is also Aft cyclic as the heli will want to nose down from lowering the collective.

[MotoXracer450]

@CGiordano464 It's about the pitch of the blades on decent. The heli is angled forward to keep forward speed and the pitch of the blades is lowered to slight negative so that air moving past them is actually spinning the rotor.

[CGiordano464]

ok train guy here with little knowledge of heli's. heres my question. So u angle the helicopter down after the nengine quits and the decent powered by gravity will cause enuff air disturbance on the blades to keep them at a high enough RPM to create enough thrust to push off the ground once u reach solid land?

[MrVultcher]

Great flying..so smooth

[cowombat1]

Lowering the pitch speeds the blades so SOMETIMES the blades seem slower and SOMETIMES it seems to descend faster than a conventional landing. And the tail is often down.

[Prototheria]

@SwisssBolla There is a one way bearing known as a "sprag clutch" in the driveline that allows the engine to be dropped back to idle while the blades still turn at the proper RPM. All helicopters have this, whether they're piston or turbine powered. 

[SwisssBolla]

So autorotation means that the motor is off? If so, why can we hear the motor? Or is this noise coming from the blades only? I'm confused.

[AgonxOC]

From 600 to 800' AGL

Down/Right/Idle

Attitude/Nr/Ball

200' On course line

150' Collective full down

100' Flare

10' Pull/Pause/Level

Cushion/Cushion/Cushion

I miss full autos in the 206, specially full 180 Autos..

[kz4506]

how it done

[MrAidanSherlock]

Shere gut.