X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.248] (HELO qnsi-xch.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 1029898 for flyrotary@lancaironline.net; Fri, 10 Mar 2006 16:48:51 -0500 Received-SPF: none receiver=logan.com; client-ip=66.219.56.248; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Disposition-Notification-To: "Bobby J. Hughes" X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Subject: RE: [FlyRotary] Re: NACA's, Cooling and Sport Aviation Mag.. Date: Fri, 10 Mar 2006 15:49:41 -0600 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: NACA's, Cooling and Sport Aviation Mag.. Thread-Index: AcZEe8ki8KPrVilvR5enpruUdoUpfAAEHO0A From: "Bobby J. Hughes" To: "Rotary motors in aircraft" Some of the EGG packages are using them to augment their normal exit duct and cowl flap. I think this is for the larger H6 engine. Bobby -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Christley Sent: Friday, March 10, 2006 1:47 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: NACA's, Cooling and Sport Aviation Mag.. James wrote: > Second point: I believe that a reversed direction NACA scoop would=20 > make an excellent low drag exit port for the cooling air stream. =20 > > If anyone tries it, please let us know your findings. According to the article, NACA tried it. It didn't work very well. A straight sided 'boxy' exit works much better. --=20 ,|"|"|, Ernest Christley | ----=3D=3D=3D<{{(oQo)}}>=3D=3D=3D---- Dyke Delta Builder | o| d |o www.ernest.isa-geek.org | -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/