Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Sun, 12 Oct 2003 15:56:28 -0400 Message-ID: X-Original-Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.93.67.84] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2633684 for flyrotary@lancaironline.net; Sun, 12 Oct 2003 10:23:43 -0400 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-03.southeast.rr.com (8.12.10/8.12.2) with SMTP id h9CELKW0029241 for ; Sun, 12 Oct 2003 10:21:21 -0400 (EDT) X-Original-Message-ID: <002101c390cc$309e1360$1702a8c0@WorkGroup> From: "Ed Anderson" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: solo's & Delta T... no more emergencies X-Original-Date: Sun, 12 Oct 2003 10:21:55 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01C390AA.A95277A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_001E_01C390AA.A95277A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That is interesting, Jim. My RV has louvers on both sides of the cowl, so if I understand what = you are saying, I might pick up less drag due to the turbulence created = up front that flows back over the entire fuselage. Do you have any = references about this effect other thanthe one already mentioned? Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ----- Original Message -----=20 From: Jim Sower=20 To: Rotary motors in aircraft=20 Sent: Sunday, October 12, 2003 9:06 AM Subject: [FlyRotary] Re: solo's & Delta T... no more emergencies <... I've considered adding a set of louvers on the right side of the = cowl and ducting the right rad outlet to exit the louvers ...>=20 If you try this, you might want to take care to avoid "rooster tail" = exit drag. Studies have shown that is a real significant component of = drag. Canard folks have picked up significant airspeed by making them = go away.=20 Best ... Jim S.=20 =20 ------=_NextPart_000_001E_01C390AA.A95277A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
That is interesting, Jim.
 
    My RV has louvers on = both sides=20 of the cowl, so if I understand what you are saying, I might pick up = less drag=20 due to the turbulence created up front that flows back over the entire=20 fuselage.  Do you have any references about this effect other = thanthe one=20 already mentioned?
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
----- Original Message -----
From:=20 Jim=20 Sower
Sent: Sunday, October 12, 2003 = 9:06=20 AM
Subject: [FlyRotary] Re: solo's = &=20 Delta T... no more emergencies

<... I've=20 considered adding a set of louvers on the right side of the cowl and = ducting=20 the right rad outlet to exit the louvers ...>=20
If you = try this, you=20 might want to take care to avoid "rooster tail" exit drag.  = Studies have=20 shown that is a real significant component of drag.  Canard folks = have=20 picked up significant airspeed by making them go = away.=20
Best ... = Jim=20 S.
 
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