You are not quite rite, no. "Flight systems" is ill-defined but if you mean flight controls like elevators and ailerons and whatnot, then yes. I also work with structures as a routine part of maintenance, repair and overhaul. Why would you assume my HN comments are a good way to accurately determine my area of professional expertise? Most of my comments are just shitposting about javascript anyways.

>The true picture is complex, but the shape definitely matters

Of course it matters in a general context, but what matters more in the context of fatigue-related crack growth and stress concentration is the radius of the corner. This is why we stop-drill cracks. This is basic undergrad stuff.

In any case, I see from your profile you work in oil and gas. Not sure why you have so much emotional investment in this topic but this quote of yours:

>Don't listen to the "aerospace engineer" that answered you. The reason why cockpit windows are so angular is of course for visibility.

Doesn't refute or rebut anything I've written on this topic. In fact I was not attempting to explain why cockpit windows are polygonal in shape, only that the corners aren't as sharp as it might seem at first glance/long distance because it seemed like OP was equating "rectangular" with "causes structural problems".

I probably won't reply again, have a great day bro.