X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail115c7.megamailservers.com ([69.49.98.215] verified) by logan.com (CommuniGate Pro SMTP 6.0c2) with ESMTPS id 5812854 for flyrotary@lancaironline.net; Mon, 15 Oct 2012 15:51:53 -0400 Received-SPF: none receiver=logan.com; client-ip=69.49.98.215; envelope-from=hjjohnson@sasktel.net X-POP-User: a_authtest.testsitesc7.hostopia.com Received: from mail115c7.megamailservers.com (localhost [127.0.0.1]) by mail115c7.megamailservers.com (8.13.6/8.13.1) with ESMTP id q9FJpIwA021379 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 15 Oct 2012 15:51:18 -0400 Received: (from webmail@localhost) by mail115c7.megamailservers.com (8.13.6/8.12.2/Submit) id q9FJpIIo021378 for flyrotary@lancaironline.net; Mon, 15 Oct 2012 15:51:18 -0400 Received: from static184-169-52-50.wb.rev.accesscomm.ca (static184-169-52-50.wb.rev.accesscomm.ca [184.169.52.50]) by webmail.sasktel.net (Webmail 5.0 V.V.I.) with HTTP for ; Mon, 15 Oct 2012 13:51:18 -0600 Message-ID: <20121015135118.65e0tp2uio04cokc@webmail.sasktel.net> From: "=?utf-8?b?SmFycmV0dCBKb2huc29u?=" To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: skydivers-supersonic-24-mile-jump Date: Mon, 15 Oct 2012 13:51:18 -0600 X-Priority: 3 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="=_212zk47uxphc" Content-Transfer-Encoding: 7bit User-Agent: Webmail 6.0 X-CSC: 0 X-CHA: v=1.1 cv=J8CFsI8rs2krE/KcLaK6OfvUp/xZ1CU7ovXaVQIPYQU= c=1 sm=1 a=Q5QLeeme7KwA:10 a=OxYPPzHlW1gA:10 a=YxfxW3ofkq8A:10 a=upxSRtdB2imoQKVfWHPO4g==:17 a=8pif782wAAAA:8 a=KQ1Wv_bSAAAA:8 a=Ia-xEzejAAAA:8 a=fLuM78UsAAAA:8 a=7g1VtSJxAAAA:8 a=upXHrtAQAAAA:8 a=E9u14aKnMJnGFiNYD7YA:9 a=QEXdDO2ut3YA:10 a=iKhjpyunHcQA:10 a=Qa1je4BO31QA:10 a=AcSaDQtcpv8A:10 a=f0s5FU26TKIA:10 a=EzXvWhQp4_cA:10 a=3jk_M6PjnjYA:10 a=PjuYqXk4AAAA:8 a=uhPMnebkAAAA:8 a=axyrFwJWNU-8xfsDFroA:9 a=tXsnliwV7b4A:10 a=QSmc0Ec9vTIA:10 a=Hs9J3SXIuHcA:10 a=WZaY6ImKlfcPpDsR:21 a=WkljmVdYkabdwxfqvArNOQ==:117 X-CTCH-Spam: Unknown X-CTCH-RefID: str=0001.0A020209.507C6936.013B,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 This message is in MIME format. --=_212zk47uxphc Content-Type: text/plain; charset=UTF-8; format="flowed" Content-Description: Plaintext Version of Message Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Ok, here's the 'why'... which actually make sense... good to learn something new every day :) Jarrett On Mon, 15 Oct 2012 15:31:52 -0400, Gordon Alling wrote: Look up =E2=80=9Cthermosphere=E2=80=9D http://en.wikipedia.org/wiki/Thermosphere That citation suggests that it is above his jump altitude. But, I wouldn=E2=80=99t be surprised if he was approaching the lower levels of it. Gordon C. Alling, Jr., PE President acumen Engineering/Analysis, Inc. 540-786-2200 www.acumen-ea.com From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of marv@lancair.net Sent: Monday, October 15, 2012 2:54 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: skydivers-supersonic-24-mile-jump Jarrett Johnson wrote: """ Some of that temp rise will be aerodynamic heating. I know at 280knts and 24,000ft I'm seeing 10-15decC rise in temp... At 800+mph the temp rise woul= d be a lot higher, even at 70K+ ft. """ Airspeed definitely wasn't the case here.. this was during the ascent, when he was rising about 1000fpm, maybe less (don't remember exactly) but his speed over the ground had by then diminished to 15-20 knots, just floating along with the flow up there. I, too, am curious about why ambient temps started to rise as altitude increased... I'd have figured it to just keep going down right in step with the ambient pressure. It'll be way interesting to hear the actual reason. -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html www.innovention-tech.com --=_212zk47uxphc Content-Type: multipart/related; boundary="=_28iht749yog0"; start="28jh9ahg1fms@webmail.sasktel.net" Content-Transfer-Encoding: 7bit This message is in MIME format. --=_28iht749yog0 Content-Type: text/html; charset=UTF-8 Content-Description: HTML Version of Message Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-ID: 28jh9ahg1fms@webmail.sasktel.net

Ok, here's the 'why'...  <= ;http://www.reddit.com/r/askscience/commen= ts/11gtqu/how_come_its_colder_at_70000ft_than_at_100000ft/> whi= ch actually make sense...  good to learn something new every day :)

 

Jarrett

On Mon, 15 Oct 2012 15:31:52 -0400, Gordon Alling <gordon@acumen-ea.com> wrote:

http://en.wikipedia= .org/wiki/Thermosphere

  But, I wouldn=E2=80=99t be = surprised if he was approaching the lower levels of it.

acumen Engineering/Analysis, Inc.

From:= Rotary motors = in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of marv@lancair.net
Sent: Monday, October 15, 2012= 2:54 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: skydivers-supersonic-24-mile-jump

 







Jarrett Johnson <hjjohnson@sasktel.net= > wrote:

"""

Some of that temp rise will be aerodynamic heating. I know at 280knts and
24,000ft I'm seeing 10-15dec= C rise in temp... At 800+mph the temp rise would
be a lot higher, even at= 70K+ ft.
"""

Airspeed definitely wasn't the = case here.. this was during the ascent, when he was rising about 1000fpm, maybe = less (don't remember exactly) but his speed over the ground had by then diminish= ed to 15-20 knots, just floating along with the flow up there.  I, too, am curious about why ambient temps started to rise as altitude increased... I'= d have figured it to just keep going down right in step with the ambient pres= sure.  It'll be way interesting to hear the actual reason.

 =

  <marv>

 

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