From: bskb@m.a.c.com.invalid (Bjarne Bäckström)
Subject: Re: Ariane 5 Failure from 1996
Date: Fri, 10 Jul 2009 18:01:35 +0200
Date: 2009-07-10T18:01:35+02:00 [thread overview]
Message-ID: <1j2ngoq.3f6swczz3djgN%bskb@m.a.c.com.invalid> (raw)
In-Reply-To: 851f477d-c5a4-4c87-b930-4a47ba508579@h8g2000yqm.googlegroups.com
Martin <martin.dowie@btopenworld.com> wrote:
> On Jul 10, 3:53 pm, John McCabe <j...@nospam.assen.demon.co.uk> 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
>
> Not aware of this claim and it's entirely hypothetical - you could
> argue that if the C programmers had been 'average' C programmers, it
> might not have got to the launch pad!
>
> My understanding of the Ariane pretty slim but if Wikipedia is
> accurate (http://en.wikipedia.org/wiki/Ariane_5) then it seems likely
> that the same error would have occurred, as my reading is that it was
> the deliberate removal of Ada checks that led to the 32-bit Float
> being assigned to a 16-bit value, i.e. that part was C-in-Ada-syntax.
The full report can be found here:
<http://sunnyday.mit.edu/accidents/Ariane5accidentreport.html>
--
next prev parent reply other threads:[~2009-07-10 16:01 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-10 14:53 Ariane 5 Failure from 1996 John McCabe
2009-07-10 15:04 ` Martin
2009-07-10 15:09 ` John McCabe
2009-07-10 16:27 ` Hibou57 (Yannick Duchêne)
2009-07-10 18:17 ` John B. Matthews
2009-07-12 14:08 ` Marco
2009-07-12 14:34 ` Dmitry A. Kazakov
2009-07-13 10:03 ` John McCabe
2009-07-14 0:53 ` John B. Matthews
2009-07-14 13:49 ` Nicholas Paul Collin Gloucester
2009-07-14 15:16 ` John B. Matthews
2009-07-14 17:29 ` Nicholas Paul Collin Gloucester
2009-07-14 20:18 ` Ada in teaching (was: Ariane 5 Failure from 1996) Georg Bauhaus
2009-07-14 21:10 ` Adam Beneschan
2009-07-14 22:36 ` John B. Matthews
2009-07-14 23:42 ` Ada in teaching Georg Bauhaus
2009-07-15 1:03 ` (see below)
2009-07-15 15:08 ` John B. Matthews
2009-07-15 15:36 ` John McCabe
2009-07-15 18:28 ` John B. Matthews
2010-01-08 13:19 ` Ariane 5 Failure from 1996 Nicholas Paul Collin Gloucester
2010-01-08 17:34 ` Hibou57 (Yannick Duchêne)
2009-07-10 16:01 ` Bjarne Bäckström [this message]
2009-07-14 20:50 ` sjw
2009-07-10 15:26 ` Albrecht Käfer
2009-07-10 15:38 ` Adam Beneschan
2009-07-10 15:45 ` jonathan
2009-07-10 18:29 ` John McCabe
2009-07-10 18:44 ` John McCabe
2009-07-10 20:10 ` jonathan
2009-07-11 16:54 ` John McCabe
2009-07-14 14:33 ` Nicholas Paul Collin Gloucester
2009-07-14 14:39 ` John McCabe
2009-07-10 19:46 ` Niklas Holsti
2009-07-11 14:21 ` Albrecht Käfer
2009-07-11 16:55 ` John McCabe
2009-07-10 21:51 ` jimmaureenrogers
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