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Comment Re:Would a Spar be Repairable? (Score 1) 60

Woah... Dumb question, but would a wing spar be repairable or replaceable?

Coward said, because when the wing falls off at 30,000 feet, rest assured - it's okay, because Airbus has good documentation. All fixed.

No, of course a broken spar is A Very Bad Thing when it happens in midair.

Is this changing-the-timing-chains-in-an-Audi difficult, or is this replacing-your-spinal-cord-without-killing-you impossible?

Are these planes repairable? I think it's a reasonable question.

(Of course, with the Audi, if has anything more than a loose gas cap it's not economically feasible to repair, but that's what you get with European engineering.)

Comment Re:Silly. (Score 2) 75

Even if battery energy density started getting close to that of liquid hydrocarbons, and thats a looong way off still, youd still need more batteries than you would fuel because batteries dont get lighter as they discharge like burned fuel does, rocket equation stuff. A 747 carries ~150k kilograms of fuel, if that didnt burn off thats an extra 37k kg the first quarter of the flight, an extra 75k kg the first half of the flight and so on...

Battery planes may never make widespread sense, if we ever start generating enough carbon free energy cheaply enough and even if all ground transport goes battery electric or whatever, at some point it might still be worth it to just make carbon neutral jet fuel with air fuel synthesis. That seems closer on the horizon than the battery tech needed for large planes to be feasible, hard to beat jet turbines for that application.

Comment Based on AI flaws so far... (Score 2) 67

You'll end up with the worst employee you've ever had. A narcissist who sounds completely compelling but is completely wrong, or just wrong enough that it sounds right, but the load calculation is off by a small factor, no one else catches it and the bridge fails under a certain condition, someone dies.

There's no intelligence when it's just mindlessly trying to slot the right word in the next position. I realize specialized AIs are starting to have some particular skills, but it still seems so untrustworthy that you still need intensive design reviews by senior engineers, assuming the AI engineer is an idiot and needs double checking at every turn.

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