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Shortly after launch there were quite a few articles talking about how well the launch went on the Ariane and how that allowed the mission to be extended to 20
by jamincan 5y ago
Shortly after launch there were quite a few articles talking about how well the launch went on the Ariane and how that allowed the mission to be extended to 20 years or so.
I'm not sure who it was anymore (possibly Scott Manley on youtube), but apparently ESA had been setting aside the components for the Ariane 5 that tested best to be used for the launch of JWST to lower the risk of failure and that might explain in part why it was able to launch it so precisely - it was not your average Joe's Ariane 5.
- kortex 5y agoSo they essentially binned the rocket parts much the same way a chip fab would?
- NikolaeVarius 5y agoNo? This is a completely meaningless comparison
- deleted 5y ago[deleted]
- jacobolus 5y agoIt’s the same idea. Instead of making a tighter spec and spending more resources making just the right number of parts meeting the specified tight tolerance, use a looser production tolerance and make a bunch of parts, and then (for an especially tricky use case) pick the parts satisfying a tighter tolerance after production, leaving the remaining parts for less demanding jobs.
- PetitPrince 5y agoThey selected the parts that were the most up to spec (not necessarily the strongest, but the most faithful to spec).
- manquer 5y agoChip binning or most complex systems QC also works that way ? If it doesn't behave as within parameters defined would the core/chip is binned. Complex systems can break in unexpected ways if any one parameter is outside range even if it actually better (say more clock speed) , you want to stick to spec.
- isolli 5y agoI also heard that for this launch, Arianespace made sure to make no innovation whatsoever to the launcher (usually each launch is used to test small improvements). Source: podcast in French