[meteorite-list] Dual Oriented Irons. Secondary Aerodynamic Forces?

Mail actions: [ respond to this message ] [ mail a new topic ]
Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

From: Jim <Jim_at_meteoritecentral.com>
Date: Thu Apr 22 10:10:07 2004
Message-ID: <001f01c300e4$17106600$6401a8c0_at_ATTBI.com>

This is a multi-part message in MIME format.

------=_NextPart_000_001C_01C300C2.8FDD3440
Content-Type: text/plain;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Jeff and List........

Take a look at this Oriented Heat-shield shape Sikhote-alin that I put =
on ebay a couple days ago (item #2169713805). It does not show the =
double orientation that Jeff has shown in his photos but it is one of =
the most perfectly heat-shield shapes I have ever seen.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3D3239&item=3D2169=
713805

Best Wishes..........

Jim Strope
421 Fourth Street
Glen Dale, WV 26038

Catch a Falling Star Meteorites
http://www.catchafallingstar.com

  ----- Original Message -----=20
  From: Jeff Kuyken=20
  To: Meteorite List=20
  Sent: Friday, April 11, 2003 11:40 PM
  Subject: [meteorite-list] Dual Oriented Irons. Secondary Aerodynamic =
Forces?

  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_001C_01C300C2.8FDD3440
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 6.00.2800.1106" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV>Jeff and List........</DIV>
<DIV> </DIV>
<DIV>Take a look at this Oriented Heat-shield shape Sikhote-alin that I =
put on=20
ebay a couple days ago (item #2169713805).  It does not =
show the=20
double orientation that Jeff has shown in his photos but it is one of =
the most=20
perfectly heat-shield shapes I have ever seen.</DIV>
<DIV> </DIV>
<DIV><A=20
href=3D"http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3D3239=
&item=3D2169713805">http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&amp=
;category=3D3239&item=3D2169713805</A></DIV>
<DIV> </DIV>
<DIV>Best Wishes..........</DIV>
<DIV> </DIV>
<DIV>Jim Strope<BR>421 Fourth Street<BR>Glen Dale, WV  26038</DIV>
<DIV> </DIV>
<DIV>Catch a Falling Star Meteorites<BR><A=20
href=3D"http://www.catchafallingstar.com">http://www.catchafallingstar.co=
m</A><BR></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Djeff_at_meteoritesaustralia.com=20
  href=3D"mailto:jeff_at_meteoritesaustralia.com">Jeff Kuyken</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
  title=3Dmeteorite-list_at_meteoritecentral.com=20
  href=3D"mailto:meteorite-list_at_meteoritecentral.com">Meteorite List</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, April 11, 2003 =
11:40=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [meteorite-list] Dual =
Oriented=20
  Irons. Secondary Aerodynamic Forces?</DIV>
  <DIV><BR></DIV>
  <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 =

  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 shape towards the centre on the leading side. It is in fact a =
little=20
  indented in 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=20
  and of a particular shape where the leading edge is relatively flat. =
Could it=20
  be that there is some type of secondary aerodynamic force acting on =
this point=20
  of the meteorite? Could it be that there is more pressure at this =
point where=20
  the air molecules find more resistance and a more difficult path =
of=20
  moving 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></BLOCKQUOTE></BODY></HTML>

------=_NextPart_000_001C_01C300C2.8FDD3440--
Received on Sat 12 Apr 2003 07:10:13 AM PDT

This message: [ Message body ]
Next message: j.divelbiss_at_att.net: "[meteorite-list] Fw: Interesting item on eBay web site item#2169975853: METEORITE 245 GRAMS FROM ARIZON DESERT"
Previous message: M come Meteorite Meteorites: "[meteorite-list] New italian meteorite found and fall"
In reply to: Jeff Kuyken: "[meteorite-list] Dual Oriented Irons. Secondary Aerodynamic Forces?"

Mail actions: [ respond to this message ] [ mail a new topic ]
Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

StumbleUpon

del.icio.us

Yahoo MyWeb