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that makes me uncomfortable very cool though
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May 30, 2019 19:24
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Knockknees posted:How common are go arounds on large commercial flights? I had one once in Dublin Air coming into O Hare on a snowy night. The captain said something like he didn’t like the look of the runway with the snow on it. At the time I figured that he wanted to get a better angle or make sure he came down on the numbers or something. Not as common as they should be actually. Pretty much every airline right now is actually trying to increase the number of go arounds, based on the data of pilots landing from unstabilized approaches.
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May 30, 2019 19:29
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e.pilot posted:Not as common as they should be actually. Pretty much every airline right now is actually trying to increase the number of go arounds, based on the data of pilots landing from unstabilized approaches. I assume southwest is looking into arresting gear instead?
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May 30, 2019 19:31
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hobbesmaster posted:I assume southwest is looking into arresting gear instead? Someone needs to paint this in SouthWest’s original livery. 
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May 30, 2019 19:35
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sincx fucked around with this message at 05:49 on Mar 23, 2021 |
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May 30, 2019 19:38
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e.pilot posted:Not as common as they should be actually. Pretty much every airline right now is actually trying to increase the number of go arounds, based on the data of pilots landing from unstabilized approaches. You might be able to confirm this, but I've been told by DEN tower people that since the TRACON doesn't hold aircraft they'll just send them over to the tower to do go arounds when they can't land because of wind shear or whatever. So basically they just need to send them out this way and they'll get plenty of practice at it while also getting practice holding and entering route changes for gate swaps!
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May 30, 2019 19:43
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Slightly more seriously, is the current effort at all related to that Delta MD-80 or MD-90 or whatever that came in a little too hot for a snowy runway at LGA a few years back? I don't think Southwest has overrun a runway for a while.
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May 30, 2019 19:43
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hobbesmaster posted:Slightly more seriously, is the current effort at all related to that Delta MD-80 or MD-90 or whatever that came in a little too hot for a snowy runway at LGA a few years back? That plane actually lost directional control due to what the NTSB described as "excessive reverse thrust", which blanked the rudder. A previous arrival reported braking action as "good", and the crew armed the autobrakes and reported not feeling them kick in at all. The plane came to a full stop off the runway but with about 2,000' of runway remaining in front of it. Sources: Final report from the NTSB Second report, from which I took some of the key details It feels a little bit lovely of the NTSB to blame the pilot's use of reverse thrust given that the autobrakes didn't do poo poo, the spoilers didn't auto-deploy (the FO kicked them out manually shortly after touchdown) and a previous arrival didn't have trouble stopping.
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May 30, 2019 20:27
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I've often wondered how pilots, in particularly military pilots are so good at doing pretty precise 180 or 90 degree rolls like that. Is it just practice? Also is that a notably incorrect artificial horizon in the middle of the console?
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May 30, 2019 21:04
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Yes, it's like a lava lamp.
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PittTheElder posted:Also is that a notably incorrect artificial horizon in the middle of the console? Its a misleading camera angle. Theres a reason why airplanes have a target for seat position. edit: thought you were referring to pitch not roll, its a bit slow to figure out the roll. hobbesmaster fucked around with this message at 21:21 on May 30, 2019 |
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May 30, 2019 21:12
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PittTheElder posted:Is it just practice? Yeah. Watching flying vloggers try 4 or 8 point rolls for fun, they screw it up pretty bad. PittTheElder posted:Also is that a notably incorrect artificial horizon in the middle of the console? Yes, the screen above the gyro compass is a multi-function display. It's a hard life to be a gyro in that airplane, even a solid state one.
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May 30, 2019 21:14
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Ola posted:
can confirm- one of our planes has a solid state attitude indicator and I got it to "tumble" by doing a 3 turn spin. poor lil guy needed about 10 seconds to figure itself out again
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May 30, 2019 21:17
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a patagonian cavy posted:can confirm- one of our planes has a solid state attitude indicator and I got it to "tumble" by doing a 3 turn spin. poor lil guy needed about 10 seconds to figure itself out again Still better than the old-style gyro attitude indicators, which after a spin like that might not ever read properly for the rest of the flight.
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May 30, 2019 22:07
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MrChips posted:Still better than the old-style gyro attitude indicators, which after a spin like that might not ever read properly for the rest of the flight. Definitely appears to apply to his DG.
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May 30, 2019 22:12
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a patagonian cavy posted:can confirm- one of our planes has a solid state attitude indicator and I got it to "tumble" by doing a 3 turn spin. poor lil guy needed about 10 seconds to figure itself out again Poor ol' G5, thought of spins and died. I can confirm that even solid state AIs are none too happy with spins, but still better than gyros.
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May 30, 2019 22:39
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Awww HELL NAW'
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May 31, 2019 01:42
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I'm trying to figure out how the pilot's balls don't cause the plane to exceed MTOW
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May 31, 2019 05:08
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Even outside how low he is watching negative g stuff makes my face hurt sympathetically https://www.youtube.com/watch?v=FBo1zLcpodg This would probably give me a stroke.
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May 31, 2019 08:33
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Ah my favourite, when down is up and up is expensive
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May 31, 2019 13:24
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A solid state gyro, huh
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May 31, 2019 13:35
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tactlessbastard posted:A solid state gyro, huh ¯\_(ツ)_/¯ https://www.rockwellcollins.com/Pro...nce-System.aspx says "Rugged solid-state design: Fiber optic gyro and triple axis MEMS for self-aligning without using magnetic sensors." I guess if the only moving parts are photons it can still be solid state.
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May 31, 2019 14:40
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Ring laser gyros have been around forever.
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May 31, 2019 14:51
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Isn’t that what the flat earther “scientists” used to try and prove the earth is flat by showing there is no gyroscopic procession only to actually find the expected 15 degree per hour procession and basically did surprised_pikachu.jpg?
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May 31, 2019 15:03
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Jealous Cow posted:Isn’t that what the flat earther “scientists” used to try and prove the earth is flat by showing there is no gyroscopic procession only to actually find the expected 15 degree per hour procession and basically did surprised_pikachu.jpg? Precession, and IIRC you need to correct it for latitude.
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May 31, 2019 15:05
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Yeah Earth rotation rate scales with the cosine of latitude. Gyros aren't measuring precession though. The precessional motion of the Earth is absolutely tiny, especially compared to the screamingly obvious 15 deg/hr rotation. I love that they thought the gyro had to be observing the sky or some poo poo and tried putting it into a magic box. Their experiment on the canal gives them the same result too, still to no avail. It really is interesting that flat earth has captured so many smart, competent people, who then refuse to believe what their own experiments are telling them. PittTheElder fucked around with this message at 16:26 on May 31, 2019 |
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May 31, 2019 16:22
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Like, there are places on the planet you can literally see the curvature. Flat earthers are a bizarre instance of cognitive dissonance.
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May 31, 2019 19:25
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On the one hand, flat Earth theory is dumb. On the other hand, I have a limited and grudging respect for anyone who looks at the human race and thinks, "that many people can't possibly be right."
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May 31, 2019 20:07
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Zorak of Michigan posted:On the one hand, flat Earth theory is dumb. On the other hand, I have a limited and grudging respect for anyone who looks at the human race and thinks, "that many people can't possibly be right." I grew up with parents that were in a borderline cult. gently caress people like this forever, they are a scourge on humanity.
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May 31, 2019 20:09
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e.pilot posted:Like, there are places on the planet you can literally see the curvature. Flat earthers are a bizarre instance of cognitive dissonance. I know, right? What a dumb thing to believe. At least we all agree helicopters aren’t real.
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May 31, 2019 21:56
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Speaking of helicopters, I watched Blue Thunder recently for the first time in probably 25 years, and holy poo poo what an awesome movie. Totally cheese but genuinely great. The police chief is like the platonic ideal of cop movie police chiefs. There's plenty of "lol no" technical stuff, but there's this one scene where the bad guy sabotages a helicopter by pulling a cotter pin out and loosens a nut so that a tie rod can vibrate loose and cause some kind of problem, and it's actually helicopter bits, not some prop. I was like holy poo poo that's actually a thing you could do, it's not just some Hollywood contrivance.
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May 31, 2019 22:17
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PittTheElder posted:Yeah Earth rotation rate scales with the cosine of latitude. Gyros aren't measuring precession though. The precessional motion of the Earth is absolutely tiny, especially compared to the screamingly obvious 15 deg/hr rotation. where can i read about this? I'm intrigued.
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Jun 1, 2019 00:45
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Zhanism posted:where can i read about this? I'm intrigued. “Behind the Curve” on Netflix.
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Jun 1, 2019 00:58
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Jealous Cow posted:I know, right? What a dumb thing to believe. At least we all agree helicopters aren’t real. No, helicopters are real, but helicopters themselves do not believe in their own existence, hence they are continuously trying to remove themselves from existence at every opportunity.
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Jun 1, 2019 01:05
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Jealous Cow posted:“Behind the Curve” on Netflix. Sat night viewing here I come. I hope this science thing wins in the end!
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Jun 1, 2019 01:07
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Finger Prince posted:Speaking of helicopters, I watched Blue Thunder recently for the first time in probably 25 years, and holy poo poo what an awesome movie. Totally cheese but genuinely great. The police chief is like the platonic ideal of cop movie police chiefs. There's plenty of "lol no" technical stuff, but there's this one scene where the bad guy sabotages a helicopter by pulling a cotter pin out and loosens a nut so that a tie rod can vibrate loose and cause some kind of problem, and it's actually helicopter bits, not some prop. I was like holy poo poo that's actually a thing you could do, it's not just some Hollywood contrivance. Supposedly the fake autocannon on the front made the Gazelle they used fly so slowly that they had to speed the film up 2x to make it look like it was flying at normal speed.
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Jun 1, 2019 01:29
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Zhanism posted:Sat night viewing here I come. I hope this science thing wins in the end! Bless your heart.
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Jun 1, 2019 01:33
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Finger Prince posted:Speaking of helicopters, I watched Blue Thunder recently for the first time in probably 25 years, and holy poo poo what an awesome movie. Totally cheese but genuinely great. The police chief is like the platonic ideal of cop movie police chiefs. There's plenty of "lol no" technical stuff, but there's this one scene where the bad guy sabotages a helicopter by pulling a cotter pin out and loosens a nut so that a tie rod can vibrate loose and cause some kind of problem, and it's actually helicopter bits, not some prop. I was like holy poo poo that's actually a thing you could do, it's not just some Hollywood contrivance. A loose fitting on a pressurized O2 supply almost cost the USAF an RC-135 and crew a couple of years ago, so yeah. Definitely a thing.
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Jun 1, 2019 01:54
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Zhanism posted:Sat night viewing here I come. I hope this science thing wins in the end! I like what this guy is doing, trying to come up with a hundred different scientific proofs that the Earth is round. Along the way you can learn various cool stuff, such as the way solid state gyros work (since the thread was talking about them earlier). So far he's 15% done with his project.
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Jun 1, 2019 10:27
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Welp: https://arstechnica.com/science/2019/05/the-worlds-largest-aircraft-may-never-launch-rockets-nor-even-fly-again/?amp=1 This doesn't bode well for ~Virgin Orbit~, either. And this is kinda neat: https://www.youtube.com/watch?v=-Q504SDGNK8 BIG HEADLINE fucked around with this message at 01:20 on Jun 2, 2019 |
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Jun 1, 2019 21:38
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BIG HEADLINE posted:Welp: https://arstechnica.com/science/2019/05/the-worlds-largest-aircraft-may-never-launch-rockets-nor-even-fly-again/?amp=1
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Jun 2, 2019 03:21
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