FCS troubles - seems karma IS a bitch

Xlot

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Aren’t the guys who feasted on LR/Persico’s foil arm problems oddly silent now? I mean fine as long as it’s kicking BA while he’s down, but when Patriot loses a race?

I have a feeling LR intends to exploit this: when Checco Bruni was asked if he had seen the Patriot incident he suddenly lost his English, mumbling something about “software”

And as the Italian commentator noted, the FCS is supposed to be a mature product, shat’s the point of weekly get-togethers and software updates NOW?

@weta27picture, of course

E1996203-979C-48BF-848E-80C79B8F0BEA.jpeg

 
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buckdouger

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Interesting comment about AMs issue from Goodison, that FCS didn't work initially but they have a second button that moved it. 

 

buckdouger

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This suggests too me that their problem was upstream from the FCS black box.
That's certainly one logical hypothesis, however I wonder how many inputs the FCS has, such as up/down signals for varying degrees of movement, rates, etc. It could be that the preferred input was not having a desirable effect but a secondary type of input such as a lower rate of speed raise for maintenance purposes as a hypothetical example, did work. 

 

rh3000

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That's certainly one logical hypothesis, however I wonder how many inputs the FCS has, such as up/down signals for varying degrees of movement, rates, etc. It could be that the preferred input was not having a desirable effect but a secondary type of input such as a lower rate of speed raise for maintenance purposes as a hypothetical example, did work. 
Everything I've seen and heard indicates it's purely an up/down system - the rates etc are controlled onboard the FCS.

 

Xlot

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Coupla additional (obvious) considerations:

- if this happened again in the Prada Cup or, god forbid, in the Cup itself, a huge amount of fecal matter would impinge on the proverbial ventilator - I’m not talking about sailing blogs, it would be disrepute in the MSM - forget subtleties, protocols and AP - who built the thing? ETNZ, the Defender. Herbie would pale in comparison

- since, by ETNZ’s own admission, the FCS has no event/fault logger, what’s to stop an unscrupulous Challenger from faking another fault?

The remedy is equally obvious: ETNZ should do as LR did for the foil arms and eat crow, urgently summon experts from the other teams, open up the system including the source code and reach a collective acceptance

Predictably, this is exactly what ETNZ are refusing to do, with their (yet again) tone deaf statement

 
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rh3000

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The remedy is equally obvious: ETNZ should do as LR did for the foil arms and eat crow, urgently summon experts from the other teams, open up the system including the source code and reach a collective acceptance.
This action only becomes a remedy at the point of collective acceptance.

What happens if you don't manage to get it?

What happens if one team that is way behind the others feels unwilling to accept?

What happens if even after collective acceptance a team still has a failure?

 

Grrr...

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This action only becomes a remedy at the point of collective acceptance.

What happens if you don't manage to get it?

What happens if one team that is way behind the others feels unwilling to accept?

What happens if even after collective acceptance a team still has a failure?
They file lawsuit after lawsuit, refuse the results of an election, then refuse to hand over the presidency... err..... cup.

Sorry, what were we talking about?

 

erdb

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You have to admit, it's pretty weird how the rule is written - "subject to physical limitations". Basically what it says is that you can play with as much as you want until it breaks. I'm sure they try to adjust it as much as possible taking it very close to its limits. Maybe it would be better to limit the frequency of adjustments in the 1D software to a level that's comfortably in a safe range for the hydraulics.

 

Miffy

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Maybe it would be better to limit the frequency of adjustments in the 1D software to a level that's comfortably in a safe range for the hydraulics
Alternatively let the professional hydraulic mechanical and systems integration electrical engineers put on their big boy pants and figure it out. 

 

Stingray~

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Alternatively let the professional hydraulic mechanical and systems integration electrical engineers put on their big boy pants and figure it out. 
For an OD component as important as this, maybe next time there should be a crew of specialist engineers from whoever supplied it to maintain the dang thing, across the teams. 

 

Miffy

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Maybe - but then you run into issues re compliance-freedom of execution when someone wants to try something new and not to original intended spec and what the integration team’s responsibilities are. 

Like if I bought a Karver lock and NKE wind instrument and expect them to come take care of it for me while I use it something it was never intended for. 
 

There’s a push pull trade off between freedom of implementation vs OD parity compliance. I don’t pretend to know where the line should be drawn. 

 
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barfy

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I think it also said that directions would be issued in Nov of last year regards usage and limitations of the fcs system. Presumably they were, and all teams are privy to them,and we are are not.

 

sailfly

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Was the splashdown by ETNZ in the first race against Ineos (12:04 in the highlights) related to the FCS? Doesn't look like the rudder is "losing grip" as the commentators state...

 




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