Maik Justus wrote:
> Hi Heiko,
>
> interesting link.
> I think I have to improve the rotor simulation to cover rotors with
> different airfoils along the blade.
> But first we need the drag/lift curves for these airfoils. My short
> search at the web was not successful.
> I am a little bit surprised, that the ec135 uses the same airfoil than
> the tiger. Several years ago a eurocopter test pilot of the tiger told
> me, that the tiger is nearly not capable to autorotate. It's not
> impossible, but he told it's rather sporty and it's not unlikely to
> damage the helicopter. I think they want to avoid overspeed of the rotor
> at extreme flight attitudes and therefore the rotor does not speed up in
> autorotation. This is in agreement with his statement, that it is not
> possible to damage the tiger while in flight.
> But I expect the ec135 to be able to autorotate. Maybe the twisting is
> different? (But I heard, that the enignes would be damaged, if you train
> autorotation, and therefore the ec135 for the german Heeresflieger
> ("army") got a modification to be capable to train autorotation).
It's a very common EMS helicopter here, and I think in Europe as well. I
can't see an EMS agency or company buying a helo without good
autoratation capabilities. EMS is one of the most dangerous types of flying.
Josh
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