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From: "Theodore E. Dennison" <dennison@escmail.orl.mmc.com>
Subject: Re: ARIANE-5 Failure
Date: 1996/06/12
Date: 1996-06-12T00:00:00+00:00	[thread overview]
Message-ID: <31BEBA98.167EB0E7@escmail.orl.mmc.com> (raw)
In-Reply-To: 31bc75ed.1932371@news.cableol.net


Dewi Daniels wrote:
> From the alt.folklore.computers FAQ at
> http://www.best.com/~wilson/faq:
> 
> Then in issue 8.75 we found out what really happened...
> 
> |  erratically four minutes after launch.  The alleged missing `hyphen'
> |  was really a missing `bar'.  I quote from Paul's book, pp. 202-203:
> |
> | #  relayed directly from the track radar.  The symbol for this smoothed
> | #  data was ... `R dot bar n' [R overstruck `.' and `_' and subscript n],
> | #  where R stands for the radius, the dot for the first derivative
> | #  (i.e., the velocity), the bar for smoothed data, and n for the
> | #  increment.

Still, if thy had named their variables Radius.Velocity_Smoothed_N and
Radius.Velocity_N (their language probably didn't even allow this), the 
odds of this error being discovered by someone before the failure would 
have been MUCH greater.


-- 
T.E.D.          
                |  Work - mailto:dennison@escmail.orl.mmc.com  |
                |  Home - mailto:dennison@iag.net              |
                |  URL  - http://www.iag.net/~dennison         |




  reply	other threads:[~1996-06-12  0:00 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1996-06-06  0:00 ARIANE-5 Failure John McCabe
1996-06-07  0:00 ` Tronche Ch. le pitre
1996-06-07  0:00   ` David Weller
1996-06-07  0:00     ` Ken Garlington
1996-06-08  0:00       ` Samuel Mize
1996-06-09  0:00         ` ARIANE-5 Failure (DC-X works) Eugene W.P. Bingue 
1996-06-08  0:00           ` Robert Dewar
1996-06-09  0:00             ` ARIANE-5 Failure Dale Stanbrough
1996-06-09  0:00             ` ARIANE-5 Failure (DC-X works) Samuel Mize
1996-06-10  0:00               ` ARIANE-5 Failure Dale Stanbrough
1996-06-10  0:00               ` ARIANE-5 Failure (DC-X works) Robert Dewar
1996-06-12  0:00                 ` Samuel Mize
1996-06-13  0:00                   ` Robert Dewar
1996-06-17  0:00                     ` David Zink
1996-06-18  0:00                       ` Robert Dewar
1996-06-12  0:00                 ` Theodore E. Dennison
1996-06-15  0:00                   ` Robert Dewar
1996-06-13  0:00                 ` Ken Garlington
1996-06-14  0:00                   ` Robert Dewar
1996-06-17  0:00                     ` Ken Garlington
1996-06-18  0:00                       ` 4GL code in a deliverable (was: ARIANE-5 Failure) Arthur Evans Jr
1996-06-19  0:00                         ` Ken Garlington
1996-06-20  0:00                           ` Robert Dewar
1996-06-24  0:00                             ` Ken Garlington
1996-06-24  0:00                             ` Ken Garlington
1996-06-10  0:00             ` ARIANE-5 Failure (DC-X works) Ken Garlington
1996-06-14  0:00               ` Robert Dewar
1996-06-17  0:00                 ` Ken Garlington
1996-06-19  0:00                   ` 4THGL code Warren Taylor
1996-06-12  0:00         ` Automatic code generation (was ARIANE-5 Failure (DC-X works)) Steve Vestal
1996-06-07  0:00   ` ARIANE-5 Failure Ken Garlington
1996-06-07  0:00     ` Robert Dewar
1996-06-07  0:00     ` John McCabe
1996-06-07  0:00   ` Bert Peers
1996-06-08  0:00   ` Jim Kingdon
1996-06-09  0:00   ` Jim Kingdon
1996-06-09  0:00     ` Robert Dewar
1996-06-10  0:00       ` Keith Thompson
1996-06-10  0:00       ` Dewi Daniels
1996-06-12  0:00         ` Theodore E. Dennison [this message]
1996-06-12  0:00           ` Ken Garlington
1996-06-13  0:00             ` Theodore E. Dennison
1996-06-13  0:00         ` Jan Kok
1996-06-09  0:00   ` Jim Kingdon
1996-06-10  0:00   ` William Clodius
1996-06-07  0:00 ` Theodore E. Dennison
1996-06-10  0:00 ` William Clodius
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