From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,f096ebb5dcac664d X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!postnews.google.com!p29g2000yqh.googlegroups.com!not-for-mail From: jonathan Newsgroups: comp.lang.ada Subject: Re: Ariane 5 Failure from 1996 Date: Fri, 10 Jul 2009 08:45:21 -0700 (PDT) Organization: http://groups.google.com Message-ID: <14e1cf5c-b053-49ec-83c8-d36b9afc49ab@p29g2000yqh.googlegroups.com> References: NNTP-Posting-Host: 143.117.23.126 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1247240721 14304 127.0.0.1 (10 Jul 2009 15:45:21 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Fri, 10 Jul 2009 15:45:21 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: p29g2000yqh.googlegroups.com; posting-host=143.117.23.126; posting-account=Jzt5lQoAAAB4PhTgRLOPGuTLd_K1LY-C User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux x86_64; en-GB; rv:1.9.0.11) Gecko/2009061208 Iceweasel/3.0.6 (Debian-3.0.6-1),gzip(gfe),gzip(gfe) Xref: g2news2.google.com comp.lang.ada:6947 Date: 2009-07-10T08:45:21-07:00 List-Id: On Jul 10, 3:53=A0pm, John McCabe wrote: > Dear All > > The other day, some geezer who was presenting to me claimed that > someone had carried out an analysis to show that, had the Ariane 5 > software been written in C, the first launch would have succeeded. > > Are any of you aware of this claim and have information to debunk > this? > > Thanks > John Any program that met the requirements would have destroyed the flight at exactly the same time and in exactly the same way. It could have been written in C, Ada, or assembly and if it met the requirements exactly it would have destroyed flight 501 the same 37 seconds after liftoff. Post-flight analysis described the problem as a requirements failure . (That's my memory of the event.) Jonathan