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Date: Mon, 06 Aug 2012 12:53:49 -0400
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Subject: Re: [LML] Recent LIVP Power Settings (Westbound, FL220, LOP, 2350 RPM)
From: Ronald STEVENS <Ronald@sdc.com>
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Almost too good to be true (pun intended).

When I had my Chelton I did the GPS quadrant to see what the 'real' =
numbers were, and they were off by 8kts (which is not bad, as the =
Velocity that I had was 25kts off, me wondering why I always had a head =
wind lol)

There is no free lunch, and roughly said, fuel burn determines also =
power, and the power needs to come from somewhere (sure we can have =
optimized RPM/Prop but I wonder how much this could do in reality)

So I would suggest to do the GPS track and you can use this program ( =
http://www.csgnetwork.com/tasgpscalc.html=20
to get the real numbers :)

=3D=3D Ronald (n45HL, LNC4p, >160 hours)=20

On Aug 6, 2012, at 7:57 AM, jeffrey liegner wrote:

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> Sent: Sunday, August 5, 2012 9:40:17 PM
> Subject: Recent LIVP Power Settings (Westbound, FL220, LOP, 2350 RPM)
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> Further flight experimenting with slower prop, lower MAP and LOP at =
lower fuel flows.=20
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> August 4th, Westbound FL220.=20
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> MAP 32.0 RPM 2340 FF 16.5 gal/hour (LOP) yields TAS 246.=20
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> In the past, at a more aggressive setting immediately after take off: =
MAP 34" RPM 2500 FF 19.0 though out the flight, I would show TAS ~245, =
roughly the same TAS. Improved prop efficiency?=20
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> At MAP 31.5" RPM 2350, the FF is 16.2 and the performance is roughly =
the same.=20
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> At this cruise setting, with a WOT RPM 2680 climb to the flight =
levels, the plane's range increases to six hours (rate than 5.5 hours) =
and still travels 1100nm in five hours on a 110gal full gas load.=20
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> Comments welcomed.=20
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> Jeff L=20
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> Bonus: light winds over the Rockies=20
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> =
http://flightaware.com/live/flight/N334P/history/20120804/1705Z/1D8/S21=20=

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