REFLECTOR: ram air

[steve korney]

When talking about performance, we ALWAYS speak in terms of wide open 
throttle...

Best... Steve



----Original Message Follows----
From: "Al Gietzen" <ALVentures at cox.net>
Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
Subject: Re: REFLECTOR: ram air
Date: Thu, 6 Jul 2006 07:48:41 -0700

Richard wrote:

I agree with the 1.4" theoretical boost, and how to get it.

But it will never result in decreased fuel
burn.  At 170 kts your drag is determined
completely by induced and parasite drag.  Your
fuel burn is your fuel specific times the
horsepower required to equal that total drag.
 >>>>>>

You're right, of course.  I had in my mind at that moment that if you had
more performance capability you could throttle back for the same speed, but
unless you can get more performance out of the same amount of fuel (e,g;
increase in compression ratio); it will take the same amount of fuel burn
for the same speed.

Al

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