Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.2b4) with ESMTP id 120298 for flyrotary@lancaironline.net; Wed, 02 Jun 2004 07:59:34 -0400 Received: from [65.80.33.253] by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040602115905.UAGG18130.imf20aec.mail.bellsouth.net@[65.80.33.253]> for ; Wed, 2 Jun 2004 07:59:05 -0400 User-Agent: Microsoft-Entourage/10.1.4.030702.0 Date: Wed, 02 Jun 2004 07:58:54 -0400 Subject: Re: [FlyRotary] Re: 3rd flight From: Bulent Aliev To: Rotary motors in aircraft Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3169007937_36423711" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3169007937_36423711 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable On 6/2/04 7:29 AM, "Steve Brooks" wrote: > Rusty, > I had started with the stock Cozy cowling, and modified it for the rotary= . I > left the original opening at the rear wide open to start with. I figured= that > if cooling was good, I could start closing it off. You can see the aft > opening in the attached photo. It is probably 2-3 times the sum of all 3 > scoops. > =20 > Steve >> =20 Steve, one possibility is that the Ivo prop=B9s root section is creating back pressure in flight. Years ago some canard flyers did testing in flight and found there was reverse flow around the hub area. Ivo prop=B9s first 1/3section from the hub has very little pitch, and the faster you go, it acts more like flat disk. Bulent --B_3169007937_36423711 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [FlyRotary] Re: 3rd flight On 6/2/04 7:29 AM, &quo= t;Steve Brooks" <steve@tsisp.com> wrote:

Rusty,
I had started with the stock Cozy cowling, and modified it for the rotary. =  I left the original opening at the rear wide open to start with.  = ;I figured that if cooling was good, I could start closing it off.  You= can see the aft opening in the attached photo.  It is probably 2-3 tim= es the sum of all 3 scoops.
Steve

Steve, one possibility is that the Ivo prop’s root sec= tion is creating back pressure in flight. Years ago some canard flyers did t= esting in flight and found there was reverse flow around the hub area. Ivo p= rop’s first 1/3section from the hub has very little pitch, and the fas= ter you go, it acts more like flat disk.
Bulent --B_3169007937_36423711--