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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Fw: Prop Suitability
Date: Wed, 27 Dec 2006 07:38:01 -0500
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Thought some of you might be interested in Paul Lipps response to my e =
mail concerning his plans for his unique propeller.  I sent him another  =
e mail asking whether the CS was going to be hydraulic or electric =
control of pitch.


Ed
----- Original Message -----=20
=20
To: Ed Anderson=20
Sent: Tuesday, December 26, 2006 9:23 PM
Subject: Re: Prop Suitability


Hi, Ed!
       I'm working with a prop builder, and we're going to bring out a  =
three-blade CS prop of my design specifically for the RV-series with =
150-200+ hp, 150 -240 mph TAS. 'Course, there's a long way to go to get =
a design, then make and test some to be sure that it is flaw free. When =
this takes place, there will  be lots of publicity so everyone will know =
about it. My fixed-pitch three-blade has reduced static thrust since =
there is so little area outboard, and yet my little Lancair, with a 125 =
HP O-235, climbs at about 1500 ft/sec at 1350 lb, 110 mph IAS, sea =
level. I estimate the prop's efficiency at 82% in a climb.=20
'Wish I could give you something firmer. 'Still no website! Thanks for =
your inquiry!   Paul

  ----- Original Message -----=20
  ----- Original Message -----=20
  From: Ed Anderson=20
  To: elippse@sbcglobal.net=20
  Sent: Wednesday, December 20, 2006 6:44 PM
  Subject: Prop Suitability


  Hello Paul,

  I have read with great interest (who has not?) the literature on the =
effectiveness of your elliptical propeller. =20

  Just two quick questions, would such a propeller be suitable for =
aircraft flying between 160-200 MPH or do you need a  faster aircraft  =
to gain the maximum benefit? ( I have a Mazda Rotary powered RV-6A).

  Second question.  Would the propeller be more/less effective than the =
typical fixed pitch wood prop in the take off and climb regime?  In =
otherwords, does it have meaningful benefits at less that full boogie =
airspeed.

  I realize there are dozens of parameters that would probably need to =
be defined for any quantitative assessment - but, just a "seat of the =
pants" assessment is fine.

  By the way, do you have a website?

  Thanks and Happy Holidays

  Ed

  Ed Anderson
  Rv-6A N494BW Rotary Powered
  Matthews, NC
  eanderson@carolina.rr.com
  http://members.cox.net/rogersda/rotary/configs.htm#N494BW
  http://www.dmack.net/mazda/index.html


-------------------------------------------------------------------------=
-----


  No virus found in this incoming message.
  Checked by AVG Free Edition.
  Version: 7.5.432 / Virus Database: 268.15.25/593 - Release Date: =
12/19/2006 1:17 PM

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.3020" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial>Thought some of you might be interested in Paul =
Lipps=20
response to my e mail concerning his plans for his unique =
propeller.&nbsp; I=20
sent him another&nbsp; e mail&nbsp;asking whether the CS was going to be =

hydraulic or electric control of pitch.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>Ed</FONT></DIV>
<DIV style=3D"FONT: 10pt arial">----- Original Message -----=20
<DIV style=3D"BACKGROUND: #e4e4e4; font-color: =
black"><B>&nbsp;</B></DIV>
<DIV><B>To:</B> <A title=3Deanderson@carolina.rr.com=20
href=3D"mailto:eanderson@carolina.rr.com">Ed Anderson</A> </DIV>
<DIV><B>Sent:</B> Tuesday, December 26, 2006 9:23 PM</DIV>
<DIV><B>Subject:</B> Re: Prop Suitability</DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial>Hi, Ed!</FONT></DIV>
<DIV><FONT face=3DArial>&nbsp;&nbsp;&nbsp;&nbsp;<FONT=20
face=3D"Times New Roman">&nbsp;&nbsp; I'm working with a prop builder, =
and we're=20
going to bring out a&nbsp; three-blade CS prop of my design specifically =
for the=20
RV-series with&nbsp;150-200+ hp, 150 -240 mph TAS. 'Course, there's a =
long way=20
to go to get a design,&nbsp;then make and test some to be sure that it =
is flaw=20
free. When this takes place, there will&nbsp; be lots of publicity so =
everyone=20
will know about it. My fixed-pitch&nbsp;three-blade has reduced static =
thrust=20
since there is so little area outboard, and yet my little Lancair, =
with&nbsp;a=20
125 HP O-235, climbs at about 1500 ft/sec at 1350 lb, 110 mph IAS, sea =
level. I=20
estimate the prop's efficiency at 82% in a =
climb.&nbsp;</FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT face=3D"Times New Roman">'Wish I could =
give=20
you&nbsp;something firmer.&nbsp;'Still no website!&nbsp;Thanks for your=20
inquiry!&nbsp;&nbsp; Paul<BR></DIV></FONT>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message -----=20
</DIV></BLOCKQUOTE></FONT>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Deanderson@carolina.rr.com =
href=3D"mailto:eanderson@carolina.rr.com">Ed=20
  Anderson</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Delippse@sbcglobal.net=20
  href=3D"mailto:elippse@sbcglobal.net">elippse@sbcglobal.net</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, December 20, =
2006 6:44=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Prop Suitability</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial>Hello Paul,</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>I have read with great interest (who has not?) =
the=20
  literature on the effectiveness of your elliptical propeller.&nbsp;=20
  </FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>Just two quick questions, would such a =
propeller be=20
  suitable for aircraft flying between 160-200 MPH or do you=20
  need&nbsp;a&nbsp;&nbsp;faster aircraft &nbsp;to gain the maximum =
benefit? ( I=20
  have a Mazda Rotary powered RV-6A).</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>Second question.&nbsp; Would the propeller be =
more/less=20
  effective than the typical fixed pitch wood prop in the take off and =
climb=20
  regime?&nbsp; In otherwords, does it have meaningful benefits at less =
that=20
  full boogie airspeed.</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>I realize there are dozens of parameters that =
would=20
  probably need to be defined for any quantitative assessment - but, =
just a=20
  "seat of the pants" assessment is fine.</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>By the way, do you have a =
website?</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>Thanks and Happy Holidays</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>Ed</FONT></DIV>
  <DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial>Ed Anderson<BR>Rv-6A N494BW Rotary =
Powered<BR>Matthews,=20
  NC<BR><A=20
  =
href=3D"mailto:eanderson@carolina.rr.com">eanderson@carolina.rr.com</A><B=
R><A=20
  =
href=3D"http://members.cox.net/rogersda/rotary/configs.htm#N494BW">http:/=
/members.cox.net/rogersda/rotary/configs.htm#N494BW</A><BR><A=20
  =
href=3D"http://www.dmack.net/mazda/index.html">http://www.dmack.net/mazda=
/index.html</A></FONT></DIV>
  <P>
  <HR>

  <P></P>No virus found in this incoming message.<BR>Checked by AVG Free =

  Edition.<BR>Version: 7.5.432 / Virus Database: 268.15.25/593 - Release =
Date:=20
  12/19/2006 1:17 PM<BR></BLOCKQUOTE></BODY></HTML>

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