Talk:International Standard Atmosphere

message: I propose to merge the current ICAO Standard Atmosphere article into this one, International Standard Atmosphere. I believe they refer to the same thing -- the standard atmosphere defined by ICAO is called the ISA. They have the same content. The resulting article should be ISA, because: a) it has more, and better-written, content; b) it has more links to it; and c) I think it's the more correct name. The ICAO Standard Atmosphere article would become a redirect to ISA.  Although the merge instructions say I can be bold and just do it, I'll let discussion happen for a few days before I act.  I've tagged the articles to indicate the proposed merge. Your comments? --Jdlh  | Talk 03:56, 9 June 2007 (UTC)
replies: text: Actually they are identical standards issued by different standards organizations (ISO vs. ICAO). I've updated this article to clarify this with references. Dhaluza 09:43, 9 June 2007 (UTC)
replies: text: Wow, great information! So it looks like the topics Wikipedia should cover are: 1. characteristics of the physical model "Standard Atmosphere"; 2. the ISO 2533 standard, its history and publication; 3. the ICAO standard, its history and publication; 4. other standards (e.g. US standard for atmosphere), their history and publication. The question is, should that be done in one article, or multiple?  I now believe this article should contain at least #1 and #2. I am leaning towards it also having an ICAO section to cover #3, but I can also see the merits of having a separate article on just #3, pointing here for #1. --Jdlh  | Talk 18:36, 9 June 2007 (UTC)
replies: text: I think international standard atmosphere is probably the most well known. The others could be merged into separate sections here just highlighting differences. Dhaluza 23:19, 9 June 2007 (UTC)

text: I don't follow your comment. Yes, there are many ICAO standards. We are talking about only one, the "standard atmosphere" standard, as described in ICAO, Manual of the ICAO Standard Atmosphere (extended to 80 kilometres (262 500 feet)), Doc 7488-CD, Third Edition, 1993, . Are saying that the International Standard Atmosphere is not "exclusive to the aircraft world"? --Jdlh  | Talk 00:01, 11 September 2007 (UTC)
thread_title:  Proposal to merge "ICAO Standard Atmosphere" into "International Standard Atmosphere" 

message: The ISA model divides the atmosphere into layers with linear temperature distributions......The tabulation continues to 11 km where the pressure has fallen to 7.5 kPa and the temperature to −56.5 °C.
This doesn't tie up to the detail in the table for 11km, 22,632 Pa   At first glance the table data appears to be correct, see the formula and table at Pressure altitude and the entry for (36,090ft - circa 11km)
:You are right, good catch!  Can you figure out which is correct, and make the correction?  It might help to look back in the history of this article. Maybe somebody garbled the numbers in the process of making some other change. --Jdlh  | Talk 19:51, 13 March 2008 (UTC)
replies: text: I'm going with the figures at Barometric formula for now.  Some work needs doing across a number of these articles involving the ISA, barometric and pressure altitude as there are minor inconsistencies in figures between each (not as bad as the error referred to above).  I know the ones in the pressure altitude article differ from those at http://www.aeromech.usyd.edu.au/aero/atmosphere/ because I derived the figures entered in the table from the standard formula on the Pressure altitude page. M100 (talk) 22:40, 13 March 2008 (UTC)

text: I think the site has a redirect with a bug in it.  I corrected the reference to use a better URL at the same site. --Jdlh  | Talk 19:51, 13 March 2008 (UTC)
thread_title:  Inconsistencies in article 

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