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Re: [OM] IMG: Piaggio Propulsion Details

Subject: Re: [OM] IMG: Piaggio Propulsion Details
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
Date: Wed, 9 May 2012 14:32:05 -0500
Thanks, Bill.  There once were a couple of Starships operating out of 
Nashville, and I also recall the sound as similar to the Piaggio.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Bill Pearce" <billcpearce@xxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Wednesday, May 09, 2012 2:26 PM
Subject: Re: [OM] IMG: Piaggio Propulsion Details


> Behind the exhausts is probably the reason. The Beech Starship also had a
> very distinctive sound.
>
> -----Original Message----- 
> From: Ken Norton
> Sent: Wednesday, May 09, 2012 12:45 PM
> To: Olympus Camera Discussion
> 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
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