Hi Ken,
Very fitting commentary. In my observation, I only heard it on the ground,
during rollout, braking and taxiing. Probably at its worst.
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "Ken Norton" <ken@xxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Wednesday, May 09, 2012 12:45 PM
Subject: Re: [OM] IMG: Piaggio Propulsion Details
> So, in looking at the props of this Piaggio, I can see a few things
> that would contribute to a rather "distinctive sound". The flat blade
> ends being the most obvious. Being behind the exhaust outlets like
> that another. Being behind the scrambled airflow of the main wing
> another. In standard straight-and-level flight, none of this would
> matter too much, but pattern speeds (especially with flaps down) would
> be another. Especially since the prop's RPMs will be quite high and
> the blades in a relatively flat pitch.
>
> I've ridden in my fair share of regional flights that used turboprop
> airplanes. Those with the curved multiple blades have tended to have
> the highest noise levels. Of course, nothing was as loud as the
> turbines of a Metro, but that's another story. I otherwise rather
> liked the sound of a Metro's blades. But I always fly wearing
> earplugs.
>
> AG
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|