[SystemSafety] Schiaparelli Incident Investigation - "Very Preliminary" Results

[Peter Bernard Ladkin]

On 2016-11-24 09:17 , Matthew Squair wrote:
> Landing on mars is a tough gig and hindsight as always is 20:20 but still, you'd think that the
> flight software should have recognized that flying below ground level was not realistic, discounted
> it and gone to a fall back response. 

What exceptions you decide to trap, and where you decide to trap them, is surely a matter for
design. One design option is to build your software such that a condition of negative altitude
cannot arise. Another is to do what you suggest: recognise negative altitude as anomalous and respond.

PBL

Prof. Peter Bernard Ladkin, Bielefeld, Germany
MoreInCommon
Je suis Charlie
Tel+msg +49 (0)521 880 7319  www.rvs-bi.de





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