Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Thu, 04 Dec 2003 12:28:49 -0500 Message-ID: X-Original-Return-Path: Received: from wb1-a.mail.utexas.edu ([128.83.126.134] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP-TLS id 2783186 for flyrotary@lancaironline.net; Thu, 04 Dec 2003 08:45:18 -0500 Received: (qmail 16840 invoked from network); 4 Dec 2003 13:45:17 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (146.6.191.101) by wb1.mail.utexas.edu with RC4-SHA encrypted SMTP; 4 Dec 2003 13:45:17 -0000 X-Original-Message-Id: <5.1.1.5.2.20031204073412.012408e0@localhost> X-Sender: msteitle@mail.utexas.edu@localhost X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 X-Original-Date: Thu, 04 Dec 2003 07:44:56 -0600 X-Original-To: "Rotary motors in aircraft" From: Mark Steitle Subject: Re: [FlyRotary] Re: Heaters/defrosters In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed > > >Mark; > >I'd say not if the NACA scoop is working properly. My setup is made to >recirc cabin air. Any fresh air still has to come in the vents. > >I recall a NACA scoop on a Velocity that was somewhere back on the >fuselage under the wing for fresh air into the back seat. Opening the >vent produced no air coming in. Apparently improperly designed scoop, >or bad location; or both. > >Al For fresh air, Lancair uses a naca scoop located low on the vertical. To help with cooling the cabin while sitting on the ramp I added an in-line blower, same as what is used in marine apps. to purge gasoline fumes from the engine compartments on boats. It routes fresh air through an overhead console and finally through adjustable overhead air vents. Too bad I can't piggyback on that same system for the heater/defroster. But I don't see how that would work without running the hot water lines the full length of the cabin. So, it looks like I will have to figure another source for heater air, or just heat and recycle the cabin air. Mark