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Date: Mon, 06 Aug 2012 11:54:11 -0400
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From: Robert R Pastusek <rpastusek@htii.com>
Subject: RE: [LML] Recent LIVP Power Settings (Westbound, FL220, LOP, 2350
 RPM)
Thread-Topic: [LML] Recent LIVP Power Settings (Westbound, FL220, LOP, 2350
 RPM)
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Jeff,
I have found that you can pull the power back even more with minimal loss o=
f speed. I suggest you do some testing down to 29"/2300 RPM and see what yo=
u get for cruise. The fuel flow will be at/below 14 GPH at these power sett=
ings (LOP and about 55% of rated power).

Bob P

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of jeff=
rey liegner
Sent: Monday, August 06, 2012 7:57 AM
To: lml@lancaironline.net
Subject: [LML] Recent LIVP Power Settings (Westbound, FL220, LOP, 2350 RPM)


Sent: Sunday, August 5, 2012 9:40:17 PM
Subject: Recent LIVP Power Settings (Westbound, FL220, LOP, 2350 RPM)


Further flight experimenting with slower prop, lower MAP and LOP at lower f=
uel flows.=20


August 4th, Westbound FL220.=20


MAP 32.0 RPM 2340 FF 16.5 gal/hour (LOP) yields TAS 246.=20


In the past, at a more aggressive setting immediately after take off: MAP 3=
4" RPM 2500 FF 19.0 though out the flight, I would show TAS ~245, roughly t=
he same TAS. Improved prop efficiency?=20


At MAP 31.5" RPM 2350, the FF is 16.2 and the performance is roughly the sa=
me.=20


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 trave=
ls 1100nm in five hours on a 110gal full gas load.=20


Comments welcomed.=20


Jeff L=20


Bonus: light winds over the Rockies=20

http://flightaware.com/live/flight/N334P/history/20120804/1705Z/1D8/S21=20