X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 14 Apr 2008 09:00:41 -0400 Message-ID: X-Original-Return-Path: Received: from mail11.syd.optusnet.com.au ([211.29.132.192] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTPS id 2846809 for lml@lancaironline.net; Mon, 14 Apr 2008 06:29:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.192; envelope-from=fredmoreno@optusnet.com.au Received: from fred ([202.139.5.198]) (authenticated sender fredmoreno) by mail11.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id m3EAS4TZ027587 for ; Mon, 14 Apr 2008 20:28:13 +1000 From: "Fred Moreno" X-Original-To: "Lancair Mail" Subject: FW: carbon-carbon composites X-Original-Date: Mon, 14 Apr 2008 18:28:01 +0800 X-Original-Message-ID: <000c01c89e1a$3ebb9c00$c6058bca@fred> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C89E5D.4CDEDC00" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: AcieGH8xeeB7LBt/RoyDlwlgqCf/ZwAASyQg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01C89E5D.4CDEDC00 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Would a carbon disk be brittle or easily damaged by impact on the edge? Qualification: I have held a Concorde carbon/carbon brake disk in my hands while visiting the facility in LA that made them many years ago. And I worked a bit with carbon/carbon nose tips on intercontinental ballistic missiles where they get warm on re-entry (like 15,000 degrees K), but I am no expert and long out of date. My suspicion: carbon brake disk plus runway and rocks = time to order a new carbon brake disk. I suspect they will get nicked, dinged, chipped, or possibly worse. However, I learned today that carbon brake disks are the hot set up on motorcycles now. Hmmmm.. Fred ------=_NextPart_000_000D_01C89E5D.4CDEDC00 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Would a carbon disk be brittle or easily damaged by impact on the edge? =

Qualification: I have held a Concorde carbon/carbon brake disk in my hands while = visiting the facility in LA that made them many years ago. And I worked a bit = with carbon/carbon nose tips on intercontinental ballistic missiles where = they get warm on re-entry (like 15,000 degrees K), but I am no expert and = long out of date.

My suspicion: carbon brake disk plus runway and rocks =3D time to order a = new carbon brake disk. I suspect they will get nicked, dinged, chipped, or = possibly worse. However, I learned today that carbon brake disks are = the hot set up on motorcycles now. Hmmmm……

Fred

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