X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 28 Dec 2008 08:53:20 -0500 Message-ID: X-Original-Return-Path: Received: from asp-3.reflexion.net ([205.237.99.178] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with SMTP id 3400783 for lml@lancaironline.net; Sat, 27 Dec 2008 08:44:28 -0500 Received-SPF: none receiver=logan.com; client-ip=205.237.99.178; envelope-from=cberland@systems3.net Received: (qmail 21603 invoked from network); 27 Dec 2008 13:43:52 -0000 Received: from unknown (HELO asp-3.reflexion.net) (127.0.0.1) by 0 (rfx-qmail) with SMTP; 27 Dec 2008 13:43:52 -0000 Received: by asp-3.reflexion.net (Reflexion email security v5.60.3) with SMTP; Sat, 27 Dec 2008 08:43:52 -0500 (EST) Received: (qmail 21587 invoked from network); 27 Dec 2008 13:43:52 -0000 Received: from unknown (HELO systems3.net) (98.172.79.178) by 0 (rfx-qmail) with SMTP; 27 Dec 2008 13:43:52 -0000 Subject: [LML] Re: sonic tube question X-Original-Date: Sat, 27 Dec 2008 06:43:46 -0700 X-Original-Message-ID: <87C33F695961494D886EB3B6C8A476515655ED@s3server.Systems3.local> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C96829.2695D8A9" In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-class: urn:content-classes:message Thread-Topic: [LML] Re: sonic tube question X-MimeOLE: Produced By Microsoft Exchange V6.5 Thread-Index: Acll2AkJ442a0QfrSeeGlVtMvO+/VACT8kcQ References: From: "Craig Berland" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01C96829.2695D8A9 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Barry, the picture you have taken is of a sonic nozzle. Personally, I think sonic nozzles at all four locations, when using a third intercooler, is a good idea. The sonic nozzles on the cold side will reduce the pressure rise time slightly on takeoff. This is a problem on an all electric aircraft as you need a vacuum supply to make the Dukes valve control the initial rise. The cold side nozzles will also reduce the pressure loss in the event of a cold side failure such as a skeet tube blowing off. Craig Berland =20 =20 ------_=_NextPart_001_01C96829.2695D8A9 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Barry, the picture you have taken is of a sonic = nozzle. Personally, I think sonic nozzles at all four locations, when using a = third intercooler, is a good idea. The sonic nozzles on the cold side will = reduce the pressure rise time slightly on takeoff. This is a problem on an = all electric aircraft as you need a vacuum supply to make the Dukes valve = control the initial rise. The cold side nozzles will also reduce the = pressure loss in the event of a cold side failure such as a skeet tube blowing = off.

Craig Berland

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