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Date: Wed, 18 Dec 2013 11:34:32 -0500
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From: cwfmd@yahoo.com
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Subject: Max Range Plot 
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=0A=0AGeorge,=0AYou plot the drag curve vs airspeed first. Then multiply th=
e drag force by the airspeed to get "Power Required"=0AEssentially this til=
ts or rotates the plot to the left. Then a line drawn from the ground speed=
 to the tangent of the curve yields the best range. This Article is good ht=
tp://joeclarksblog.com/?p=3D4155.=A0 He says the manufacturers leave this s=
tuff out of the POH to avoid litigators.=0A=A0In my 4P ops, I think the pow=
er is best at LOP max setting at 65%. This is both the manufacturers recomm=
endation and usually the highest practical LOP power without overtemping th=
e EGT/ITT.=A0 I will look at how this compares to this graphical calculatio=
n on the next few flights.=0ABill
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ti=
mes new roman, new york, times, serif;font-size:14pt"><br><div style=3D"fon=
t-family: times new roman, new york, times, serif; font-size: 14pt;"><div s=
tyle=3D"font-family: times new roman, new york, times, serif; font-size: 12=
pt;"><div class=3D"y_msg_container"><div id=3D"yiv789170308"><div><div styl=
e=3D"color:#000;background-color:#fff;font-family:times new roman, new york=
, times, serif;font-size:14pt;">George,<br>You plot the drag curve vs airsp=
eed first. Then multiply the drag force by the airspeed to get "Power Requi=
red"<br>Essentially this tilts or rotates the plot to the left. Then a line=
 drawn from the ground speed to the tangent of the curve yields the best ra=
nge. This <a rel=3D"nofollow" target=3D"_blank" href=3D"http://joeclarksblo=
g.com/?p=3D4155">Article </a>is good http://joeclarksblog.com/?p=3D4155.&nb=
sp; He says the manufacturers leave this stuff out of the POH to avoid
 litigators.<br>&nbsp;In my 4P ops, I think the power is best at LOP max se=
tting at 65%. This is both the manufacturers recommendation and usually the=
 highest practical LOP power without overtemping the EGT/ITT.&nbsp; I will =
look at how this compares to this graphical calculation on the next few fli=
ghts.<br>Bill<br><img class=3D"yiv789170308aligncenter yiv789170308size-lar=
ge yiv789170308wp-image-4159" src=3D"http://joeclarksblog.com/wp-content/up=
loads/2011/12/Fig-3-1024x750.jpg" alt=3D"" height=3D"468" width=3D"640"><br=
><div><br></div></div></div></div><br><br></div> </div> </div>  </div></bod=
y></html>
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