Message-ID: <3B895816.D46D5516@regandesigns.com>
Date: Sun, 26 Aug 2001 13:12:06 -0700
From: "Hamid A. Wasti" <hamid@regandesigns.com>
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To: lancair.list@olsusa.com
Subject: Re: L/D Max
References: <200108261425.f7QEP1o03515@robin.mail.pas.earthlink.net>
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Reply-To: lancair.list@olsusa.com

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>>
Dane & Cindy White wrote:

> You are correct about using a graph of fuel burn versus airspeed to
> determine the speed to fly for max range or endurance.

Keep in mind that the airspeed for max range depends upon the prevailing winds.
If you have a headwind, the max range speed will be higher than the no wind
airspeed.  If you have a tail wind, the speed will be lower.

As an extreme example, if you have a tailwind significantly higher than your
cruise speed, the max range speed would be your max endurance speed.  The longer
you can stay in the air, the farther you will go.  At the extreme example at the
other end, if you have a headwind of 1 knots less than the max speed of your
airplane, your max range speed would be your maximum speed.  If you fly any
slower, you will be travelling backwards.

Hamid


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