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Shifty Pony posted:Yeah the problem wasn't "more powerful" it was that the pilot went 745mph instead of 725mph. A Twitter thread from an Aero professor at UT San Antonio. https://twitter.com/DrChrisCombs/status/1300787794793713664
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Jul 9, 2022 23:37
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Lake of Methane posted:A Twitter thread from an Aero professor at UT San Antonio. Awesome thread thanks!
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Jul 10, 2022 16:13
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Anyone know why a plane would be diverted a few hours before it takes off? I just dropped my family off at Denver for a flight back to IAD, but while on the drive there the plane was diverted for a layover in Indiana before continuing on to IAD rather than a direct flight there.
Tenchrono fucked around with this message at 16:34 on Jul 10, 2022 |
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Jul 10, 2022 16:16
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Tenchrono posted:Anyone know why a plane would be diverted a few hours before it takes off? I just dropped my family off at Denver for a flight back to IAD but while on the drive there the plane was diverted for a layover in Indiana before continuing on to IAD rather than a direct flight there. Weather or crew time.
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Jul 10, 2022 16:20
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Lake of Methane posted:A Twitter thread from an Aero professor at UT San Antonio. Oh I know it wasn't a sonic boom, the report even indicates that the instruments were showing a Mach number of 0.96 and I'd expect those instruments were extremely accurate. The vapor cone is just a very good indicator that there was one hell of a pressure wave that was extending all the way to ground level. I don't know exactly what sort of ΔP you need for an adiabatic expansion to pull the temperature that far below the dew point but I'm sure that it's enough to completely gently caress up anything acting as a barrier to it equalizing.
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Jul 10, 2022 16:38
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https://www.youtube.com/watch?v=Dqk3vzHD2lo
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Jul 10, 2022 17:17
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Shifty Pony posted:Yeah the problem wasn't "more powerful" it was that the pilot went 745mph instead of 725mph. also lmao a high speed pass isn't a "stunt" c'mon jalopnik
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Jul 10, 2022 19:18
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Previa_fun posted:also lmao a high speed pass isn't a "stunt" c'mon jalopnik I guess you could consider an entire Blue Angels routine a "stunt"
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Jul 10, 2022 19:23
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Fornax Disaster posted:I found this while looking up models of Furious - a diarama of that scene in 1/700 scale! Holy cow! Those people! Those lines!
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Jul 10, 2022 19:44
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Nebakenezzer posted:Holy cow! Those people! Those lines! The RN ensign flying under the airship is the part that has me scratching my head. Hoooowwwww.
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Jul 10, 2022 20:12
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That explains a lot. The scramble to climb back in the rolling and running plane was crazy, I had no idea it was like catching a car that was left in neutral.
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Jul 12, 2022 16:10
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lol the boomer pilot telling the tower they need to scramble 
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Jul 12, 2022 16:17
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https://twitter.com/airlineflyer/status/1546509532716847107?s=21&t=g9oQKVDG1MKuj4OYXIBruQ They didn't know that the altimeter was wrong on the second approach either and could have crashed that time too. Luckily they broke out of the clouds and could see the runway.
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Jul 12, 2022 16:49
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Zero One posted:They didn't know that the altimeter was wrong on the second approach either and could have crashed that time too. Luckily they broke out of the clouds and could see the runway. Do they not use RADALT in that circumstance rather than pressure?
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Jul 12, 2022 18:29
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Phanatic posted:Do they not use RADALT in that circumstance rather than pressure? TAWS didn’t activate, which doesn’t make much sense. Since they were using a VNAV approach wouldn’t they have seen a “correct” glide slope indicator? With that instrument “lying” and TAWS not going off a picture starts to become clear. The ATC call of “I just had a ground proximity alert, are you ok? Do you see the runway?” Seems like a bad way to communicate the ground equivalent of “TERRAIN, TERRAIN”
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Jul 12, 2022 18:57
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Phanatic posted:Do they not use RADALT in that circumstance rather than pressure? The approach they were flying was using GPS LNAV and the Baro altimeter VNAV. The aircraft was not equipped for SBAS. The plane flies using the baro alt so it thought everything was going fine. Rad alt is advisory to the pilots. They said the radalt call outs were only 2500' and 1000' and none after that. They also said they cross checked the radio alt to the Baro alt.
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Jul 12, 2022 19:17
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takes sought: The Bush Plane Design Double-ender [that's a poo poo name guys] 
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Jul 12, 2022 21:38
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hobbesmaster posted:Seems like a bad way to communicate the ground equivalent of “TERRAIN, TERRAIN” So, how does aviation radio work? Are you given a frequency and a ptt code such that ATC can talk to *just you* if they want to?
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Jul 12, 2022 22:29
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No, everyone gets to listen to all the fuckups.
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Jul 12, 2022 23:49
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Potato Salad posted:So, how does aviation radio work? Are you given a frequency and a ptt code such that ATC can talk to *just you* if they want to? “I have a phone number for you to call” Technically they can call the sat phone, but I think that’s really only for oceanic when HF is being, well HF?
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Jul 12, 2022 23:54
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Nebakenezzer posted:takes sought: I want this
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Jul 12, 2022 23:57
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Potato Salad posted:So, how does aviation radio work? Are you given a frequency and a ptt code such that ATC can talk to *just you* if they want to? Analog AM radio. It’s as simple (and hilariously obsolete) as it sounds. I have a couple frequencies I can switch between if there’s an issue on one, but generally no more than two or maybe three at a time. (Its a huge pain to reconfigure our comms software to add another tx/rx station to a position, definitely not something you can do on the fly.) This is also why I’m so loving excited about enroute CPDLC in the US.
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Jul 13, 2022 00:09
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Nebakenezzer posted:takes sought: should have named it the Bush-Pull
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Jul 13, 2022 00:33
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Nebakenezzer posted:takes sought: It looks like they’ve kinda abandoned it, but their recent news post makes me a little toight in the pants area…  http://www.bushplanedesign.com/news--updates.html
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Jul 13, 2022 00:35
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hobbesmaster posted:“I have a phone number for you to call” Words you DON'T want to hear over the radio, but if directed at you, you should heed.
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Jul 13, 2022 10:03
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Humphreys posted:Words you DON'T want to hear over the radio, but if directed at you, you should heed. Though the FAA are also cops so that can be more complicated: https://pilot-protection-services.aopa.org/news/2021/march/01/dos-and-donts-with-faa
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Jul 13, 2022 15:46
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Humphreys posted:Words you DON'T want to hear over the radio, but if directed at you, you should heed. From following this thread for a few years it seems like that's a moment for hat-in-hand yes-sir-no-sir this-was-my-mistake-sir, and that consistently operating with courtesy and good faith with ATC is most likely to pay off here.
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Jul 13, 2022 16:22
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So earlier today my buddy and I were outside chatting and a helicopter came overhead, extremely low, flying very erractically. At first I thought maybe he was having control issues but it straightened out eventually and continued on at an extremely low altitude. This is over a densely packed city area, and his beacon was showing altitude below 200 ft. I have the aircraft tail number, who do I report this guy to? e: Ah I figured it out, I sent an email to the FSDO for this area. Serjeant Buzfuz fucked around with this message at 16:46 on Jul 13, 2022 |
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Jul 13, 2022 16:37
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Serjeant Buzfuz posted:So earlier today my buddy and I were outside chatting and a helicopter came overhead, extremely low, flying very erractically. At first I thought maybe he was having control issues but it straightened out eventually and continued on at an extremely low altitude. This is over a densely packed city area, and his beacon was showing altitude below 200 ft. Helicopters don't have minimum altitudes in the same way that fixed-wing does. quote:A helicopter may be operated at less than the minimums prescribed in paragraph (b) or (c) of this section, provided each person operating the helicopter complies with any routes or altitudes specifically prescribed for helicopters by the FAA; and
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Jul 13, 2022 17:36
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Phanatic posted:Helicopters don't have minimum altitudes in the same way that fixed-wing does. Counterpoint: Sea and/or ground level 
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Jul 13, 2022 17:40
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You can tell if a helicopter that is flying "erratically" is actually out of control because then it will turn into a crumpled ball of metal that is on fire
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Jul 13, 2022 17:45
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Warbird posted:Counterpoint: Sea and/or ground level Addendum: I've stood in a field and heard but not seen the Bo-105 that eventually passed by in the large ditch beside me. Helicopters are an affront to the earth.
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Jul 13, 2022 17:49
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FuturePastNow posted:You can tell if a helicopter that is flying "erratically" is actually out of control because then it will turn into a crumpled ball of metal that is on fire Yeah I seriously thought we were witnessing a crash in real time for a couple minutes. He was flying worse than I do in FS2020 when drunk.
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Jul 13, 2022 18:01
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Erratic is a helicopter's natural state.
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Jul 13, 2022 18:30
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You didn't say what kind of area the helicopter was flying over, but maybe it was a student practicing autorotations or something? Probably not if it was over your subdivision, but maybe if it was over a field or something.
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Jul 13, 2022 18:57
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I saw a helicopter land on a football field once. A helicopter that's not doing medical emergency assistance landing on a football field is extremely rare here. Some people came out of it, wandered around the field for a bit, and then the helicopter took off again. No idea what they were doing. My genuine best guess is that one of the people had to piss or poo poo VERY badly, but i couldn't see if one of them actually ventured into the bushes that surround the field. It was (obviously) an empty field and it seemed safe enough, it's just highly unusual. Helicopters buzzing around is not too uncommon, i get a lot of traffic overhead that goes to the offshore stations and occasionally some rich folks who want to see the city from the air. But landing? Nope.
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Jul 13, 2022 19:22
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Jerry’s inspiration https://twitter.com/mrs_coups/status/1547277567681495042?s=21&t=iRpEwj7FNqBIIxDu3bycbQ
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Jul 13, 2022 23:54
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mlmp08 posted:Jerry’s inspiration Slip it in and throw the props to flat pitch and it's like having a pair of barn doors out in front to slow you down. I think the ATR guys do something like that? Maybe MU-2? One of those turboprop dealies is known for coming in fast and flat and then just dropping anchor over the threshold.
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Jul 14, 2022 02:25
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mlmp08 posted:Jerry’s inspiration Kinda want to see one of these do one of Bob Hoover's old routines.
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Jul 14, 2022 02:39
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 I really wanted to go to RIAT this year. 
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Jul 14, 2022 02:46
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