pavelmachek (pavelmachek) wrote,

X servers and dangerous aircraft

It is very easy to lose track of cursor on multiple monitors... Especially if cursor is on down or right edge, only few pixels remain. Should some kind of pointer remain on the monitor even when mouse is on other monitor -- providing kind of "look that way" pointer?

Oh and... when activating USB-to-VGA adapter, mouse disappears altogether. Ouch. Unfortunately, that means system is unusable.
Is there way to adjust DPI setting, preferably per application? Does gtk has some option like that? N900 has 800x480 display. When using stylus, you can put your phone close to your eyes and pretend its a PC, but when using fingers, many controls are just way too small.
Its official: Airbus killed them.
Airbus A320 has two sidesticks, with no force feedback, and no physical link. So you are trying to recover from stall, you are pushing the sidestick fully and your first officer pulls the stick fully -- result is you remain stalled. You don't even know your first officer fights with you... That's what happened to PK-AXC, report is here. (How did they get to stall? Computers spuriously adjusted their rudder trim when they lost power. No, you should not reset flight computers like that.)
This is second accident of this type. Similar effect happened to Air France 447. (And pretty much every Airbus incident involves "dual inputs"). Lets see how many crashes it takes before Airbus provides force feedback.

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January 12 2016, 21:58:13 UTC 5 years ago

Same as the Air France crash, the co-pilot incomprehensibly pulled full back on the stick for an extended period in the face of multiple stall warnings. I have no idea what's wrong with those people. Even I know that's the wrong reaction.

It is true that the more sensible inputs of the captain got overridden in both cases, but I still mostly blame the copilot.
Well, yes, co-pilots made the mistakes. But captains should have chance to correct the mistakes, and they did not, due to aircraft design. We can't fix the co-pilots (we are trying to do that for how many years?), so we should fix the aircraft.

And yes, even you know its the wrong reaction, and I'm pretty sure the co-pilots would realize that too, if the stress levels were lower. But the brain basically goes "off" in high-stress situations :-(.


January 20 2016, 21:52:37 UTC 5 years ago

In AF447, the captain wasn't Pilot-in-Control, having just returned from break, while the secondary crew was doing the cruise part of the flight. The AF447 crash had nothing to do with dual inputs, and everything to do with incorrect understanding of the situation by pilot, who assumed "normal" fly-by-wire mode despite AutoPilot automated disengagement in face of sensor input error, which switched the flight to "emergency mode".

Because of that, the pilot thought he was safe despite pulling on a stick, because "the computer won't let him stall". Unfortunately, emergency mode meant more control to the pilot...

Some people call the attitude involved "Magenta Pilots", for pilots who rely too much on the magenta indicator from Flight Director.
Children of Magenta? . Yes, that did not help, and yes, stall started by co-pilot pulling on the stick. In "normal law", that would be safe operation, but they were not in "normal law" at that point.

But during the stall, co-pilot kept pulling on the stick. And pilot in the left seat (you are right it was not captain) had no chance to detect the condition, because joysticks were not physically linked....