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Date: Tue, 9 Feb 2010 19:12:11 -0500
Message-ID: <1ab24f411002091612k355359e0qd2d87c5ea8d92bfc@mail.gmail.com>
Subject: More power, less speed.
From: Lynn Hanover <lehanover@gmail.com>
To: flyrotary@lancaironline.net
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 At work and bored, so I ran some numbers.  Start with 170Hp that gives you
> 168mph.  To get to 172mph, you'd need 182.4Hp.
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html


Because drag increases at the cube of velocity. So improvements in top speed
require huge increases in power. However in performance improvements short
of top speed increased power increses climb rate,
acceleration rate, and shortens takeoff run. Top speed, not so much.

Lynn E. Hanover

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<div>=A0At work and bored, so I ran some numbers.=A0 Start with 170Hp that =
gives you<br>&gt; 168mph.=A0 To get to 172mph, you&#39;d need 182.4Hp.<br>&=
gt;<br>&gt; --<br>&gt; Homepage:=A0 <a href=3D"http://www.flyrotary.com/">h=
ttp://www.flyrotary.com/</a><br>
&gt; Archive and UnSub:<br>&gt; <a href=3D"http://mail.lancaironline.net:81=
/lists/flyrotary/List.html">http://mail.lancaironline.net:81/lists/flyrotar=
y/List.html</a></div>
<div>=A0</div>
<div>=A0</div>
<div>Because drag increases at the cube of velocity. So improvements in top=
 speed require huge increases in power. However in performance improvements=
 short of top speed increased power increses climb rate,</div>
<div>acceleration rate, and shortens takeoff run. Top speed, not so much.</=
div>
<div>=A0</div>
<div>Lynn E. Hanover<br></div>

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