[meteorite-list] Dual Oriented Irons. Secondary Aerodynamic Forces?
From: Jeff Kuyken <jeff_at_meteoritecentral.com>
Date: Thu Apr 22 10:10:07 2004 Message-ID: <001201c300a5$4e4bcc20$2f428a90_at_mandin4f89ypwu> This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C300F9.1DD7E250 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable G'day List, This has been address briefly before, but my interest was peaked again = when I was having a look at a small 12.4g Oriented Shield Sikhote-Alin. = Some of you may have seen the photos of my double Taza at = http://www.meteoritesaustralia.com/features/taza2.html and also Martin = Horejsi's double Taza at http://aristotle.isu.edu/wheel/wheel.htm. I only have a scanner, but made this picture last night. = http://www.meteoritesaustralia.com/images/Oriented Sikhote-Alin.jpg. It = is a little hard to tell but you can notice a crescent shape towards the = centre on the leading side. It is in fact a little indented in the = centre of this shape. I've realised it is something I've only ever seen in Irons and of a = particular shape where the leading edge is relatively flat. Could it be = that there is some type of secondary aerodynamic force acting on this = point of the meteorite? Could it be that there is more pressure at this = point where the air molecules find more resistance and a more difficult = path of moving around the flatter part of the meteorite? I'm sure there are people on this list who could answer this and = understand these forces better than I so I'd really like to hear some = theories. This is something that has popped up now and again but never = really been answered. Thanks, Jeff Kuyken I.M.C.A. #3085 www.meteoritesaustralia.com ------=_NextPart_000_000F_01C300F9.1DD7E250 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT size=3D2>G'day List,</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>This has been address briefly before, but my = interest was=20 peaked again when I was having a look at a small 12.4g Oriented Shield=20 Sikhote-Alin. Some of you may have seen the photos of my double Taza at=20 </FONT><FONT size=3D2><A=20 href=3D"http://www.meteoritesaustralia.com/features/taza2.html">http://ww= w.meteoritesaustralia.com/features/taza2.html</A> and=20 also Martin Horejsi's double Taza at <A=20 href=3D"http://aristotle.isu.edu/wheel/wheel.htm">http://aristotle.isu.ed= u/wheel/wheel.htm</A>.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>I only have a scanner, but made this picture last = night. <A=20 href=3D"http://www.meteoritesaustralia.com/images/Oriented = Sikhote-Alin.jpg">http://www.meteoritesaustralia.com/images/Oriented=20 Sikhote-Alin.jpg</A>. It is a little hard to tell but you can notice a = crescent=20 shape towards the centre on the leading side. It is in fact a little = indented in=20 the centre of this shape.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>I've realised it is something I've only ever seen in = Irons and=20 of a particular shape where the leading edge is relatively flat. Could = it be=20 that there is some type of secondary aerodynamic force acting on this = point of=20 the meteorite? Could it be that there is more pressure at this point = where the=20 air molecules find more resistance and a more difficult path of = moving=20 around the flatter part of the meteorite?</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>I'm sure there are people on this list who could = answer this=20 and understand these forces better than I so I'd really like to hear = some=20 theories. This is something that has popped up now and again but never = really=20 been answered.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Thanks,</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Jeff Kuyken<BR>I.M.C.A. #3085<BR><A=20 href=3D"http://www.meteoritesaustralia.com">www.meteoritesaustralia.com</= A></FONT></DIV></BODY></HTML> ------=_NextPart_000_000F_01C300F9.1DD7E250-- Received on Fri 11 Apr 2003 11:40:44 PM PDT |
 StumbleUpon del.icio.us reddit Yahoo MyWeb
|