4 ms·
It's likely worth noting that the shuttle has a famously robust computer system. The Challenger was related to an engineering flaw in the mechanical design of t
by HCIdivision17 11y ago
It's likely worth noting that the shuttle has a famously robust computer system. The Challenger was related to an engineering flaw in the mechanical design of the system.
I forget my source, but IIRC the computer system actually noticed the pressure drop from the fuel lines (what with the exploding) and started the shutdown process, spinning down the turbos before the system was forcefully disassembled. Takes a while to turn off the turbos; a few hundred milliseconds really isn't enough time...
[0] Obligatory link to the Feynman report
http://www.nasa.gov/mission_pages/shuttle/flyout/flyfeature_shuttlecomputers.html http://www.nasa.gov/mission_pages/shuttle/flyout/flyfeature_...
[1] A cool article on the software running the shuttle
http://www.fastcompany.com/28121/they-write-right-stuff http://www.fastcompany.com/28121/they-write-right-stuff
- mreiland 11y agoThe flaw of the O-rings was known, but the risk was considered acceptable by management. This is specifically why I couched my answer in terms of risk. This was not specifically about the computer system, this was about the mis-assessment of risk.
- philipov 11y agoSo you're saying that we have a cult of unbounded precision due to our low confidence in appropriately assessing risk?