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<DIV><FONT face=Arial size=2>I have been a skeptic as well. However, the ducted
fan and helicopter folks have been advocating them for a long time, there must
be some merit. On the other hand, if it won't work without a header tank, I feel
you are too close to the edge of not working at all. </FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=ronlock@comcast.net
href="mailto:ronlock@comcast.net">ronlock@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> ; <A
title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=jbudd@QNET.COM
href="mailto:jbudd@QNET.COM">Jerry Budd</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 13, 2004 8:34
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: hopper theory &
practice</DIV>
<DIV><BR></DIV>
<P>Ive been a hopper tank diss-believer for years. I also wonder why
many continue to report benefits. What's responsible for the
benefit?</P>
<P>I'm in agreement with Nat, and what "I think" Jerry has said regarding the
fuel system with a FULL hopper tank being a column of fluid, and the hopper
would have no benefit.</P>
<P>Maybe hopper serves to eliminate foaming and bubbles? Do I understand
heli pilots use hoppers for that reason?</P>
<P>In practice do we usually have some air in the hopper? Or do we
usually have a hopper tank that is flexible? Might we be drawing
from the hopper without replenishing from the main tank during a
vertical? Then the hopper gets replenished during level
lines?</P>
<P>Still wondering, Ron Lockhart</P>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR><BR>> >Matt, <BR>> >With or
without the hopper tank we still have a solid column of <BR>>
>incompressible fluid for gravity and G's to play its tricks on. I
<BR>> >contend if it runs ok with the hopper it will run just as well
<BR>> >without. Nat <BR>> <BR>> Nat, <BR>> <BR>> While not
exactly accurate as stated, your point is well taken. Your <BR>>
hypothesis has some merit when the tank is full, but it falls short <BR>>
anytime else (which is most of the flight). Adding just a small <BR>>
amount of air causes the system to become compressible (just like the
<BR>> brakes on your car). <BR>> <BR>> Jerry <BR>> -- <BR>>
___________ <BR>> Jerry Budd <BR>> mailto:jbudd@qnet.com <BR>>
===================================== <BR>> # To be removed from this
list, go to http://www.nsrca.org/discussionA.htm <BR>> and follow the
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