Return-Path: Received: from sbs.trace.com.au ([139.130.196.58]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Mon, 1 May 2000 08:28:02 -0400 Received: by SBS with Internet Mail Service (5.5.2448.0) id ; Mon, 1 May 2000 22:38:41 +1000 Message-ID: <11754E3FEC56D311830800A0C9E19A1F03C443@SBS> From: Graham Nutt To: "'lancair.list@olsusa.com'" Subject: NACA (or NASA) Submerged Inlets Date: Mon, 1 May 2000 22:38:40 +1000 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> In response to Walter Dodson's request http://www.geo-mark.com/320/nasa-duct.htm gives an interesting article by Ben Owen from Sport Aviation December 1991. I mentions tables which on checking back through my old magazines are indeed printed in the article. It also mentions the original research notes which are apparently available from EAA for a small sum. I had it all on a spreadsheet so it would give me coordinates for any size duct but can't find it I'm afraid. Lost in the bit bucket! Most of the pre-moulded ones appear to be shaped for ease of moulding rather than accuracy - I made plugs from timber, put duct tape wherever the duct was going, stuck the plug in place, used modelling clay to fill any gaps and glassed over it with 2-3 BID which gave me a duct with a nicely conforming mounting flange. Hardest part was getting a nice crisp corner between the ramp and the sides. May have to square up the corners with micro on the finished product. Good luck Graham Nutt >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>