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Livermore has, among others, these twoquote:KLVK 11/009 SVC TWR CLSD CLASS D SERVICE NOT AVBL CTC NORTHERN CALIFORNIA APP AT 916-361-0516 DLY 0159-1600. and I just think it's nice that the wildlife waits until the tower is closed before coming out
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Apr 14, 2021 03:26
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Geese don't have a mode c transponder so they have to wait until the tower is closed to sneak into the class c.
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Apr 14, 2021 03:31
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Sagebrush posted:Livermore has, among others, these two Now that I think about it, that particular notam might have something to do with wildlife dispersal operations stopping when they close the tower, i.e. there's nobody to go chase away birds or deer if they're on the runway. One of my old squadrons had in the SOP that we shouldn't take off or land within 30 minutes of sunrise or sunset due to heightened bird activity (the airfield is basically in the middle of a bird sanctuary). One particularly anal CO once told us, as we were coming in on a cross-country ferry flight at the end of a ~14 hour flying day, that we were not to land even one minute prior to the magical 30 minute mark after sunset. Say sunset was 1907 that day, we were literally told not to touch down prior to 1937. I guess we were just supposed to circle overhead if we got there earlier.
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Apr 14, 2021 05:12
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fknlo posted:I'm pretty sure it's a national guideline, but at both en route facilities I've been at this is not the case. We're required to read NOTAMS applicable to the approach whether the pilot says they have them or not. We theoretically have the most up to date ones and without fail a couple times a year they aren't read to an aircraft and they try to land on a closed runway or hit a truck plowing a runway. That's interesting. The last trip I flew involved two landings at non-towered airports (one doesn't have a tower, and the other one is part time), and I don't remember either approach involving NOTAM's being read to us, so maybe Seattle Center has a different interpretation of "applicable to the approach", or somehow doesn't have to do that for part 121 flights. Most of the approaches we fly are from either Salt Lake or Seattle Center, and I don't think I've heard either facility routinely insist on giving us NOTAM's if we say we have them, but it does happen occasionally.
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Apr 14, 2021 07:26
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Sagebrush posted:Livermore has, among others, these two Are you also based at LVK?
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Apr 14, 2021 08:51
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https://ops.group are lobbying to sort out the NOTAMS problem
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Apr 15, 2021 00:00
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charliemonster42 posted:Are you also based at LVK? Nah, SQL across the bay. I did my checkride landings at LVK though on a 90-degree day with an 11-knot crosswind varying between 40 degrees head and 30 degrees tail :maxmad: Sagebrush fucked around with this message at 00:29 on Apr 15, 2021 |
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Apr 15, 2021 00:26
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It seems Senator Hyde-Smith tweeted a graphic wishing the Air National Guard a happy birthday. It had the service's logo superimposed over presumably American fighter jets. She deleted it but Brian Williams showed the tweet on his show. She deleted it when it was pointed out that the logo she posted had nothing to do with the Air National Guard and the fighter planes were not American but were in fact Su-34s. https://twitter.com/Aviation_Intel/status/1382399366225301504?s=20
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Apr 15, 2021 05:18
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She also didn't use the correct logo for the ANG.
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Apr 15, 2021 06:00
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Mr. Funny Pants posted:the logo she posted had nothing to do with the Air National Guard BIG HEADLINE posted:She also didn't use the correct logo for the ANG. Glad we could clear this up.
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Apr 15, 2021 11:01
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The ANG has a logo? And I don’t see why they would be mad, SU-34s are pretty sick.
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Apr 15, 2021 13:36
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Warbird posted:The ANG has a logo? And I don’t see why they would be mad, SU-34s are pretty sick. SU-34s > F-35
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Apr 15, 2021 14:07
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Since the tweet link is deleted
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Apr 15, 2021 14:19
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Xakura posted:Glad we could clear this up. Confirmation from a second source is a good thing.
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Apr 15, 2021 16:18
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Mr. Funny Pants posted:Confirmation from a second source is a good thing. This IS the Aeronautical thread, what would it be without redundant backups?
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Apr 15, 2021 17:17
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Maksimus54 posted:This IS the Aeronautical thread, what would it be without redundant backups? https://youtu.be/UaPkSU8DNfY
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Apr 15, 2021 17:27
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Humphreys posted:SU-34s > F-35 When will Congress address the Onboard Toilet Gap?
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Apr 15, 2021 18:16
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Phy posted:When will Congress address the Onboard Toilet Gap? Pretty sure LockMart could overengineer a piss jar like the ones they give Fullback crews for a mere few billion dollars.
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Apr 15, 2021 20:34
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BIG HEADLINE posted:Pretty sure LockMart could overengineer a piss jar like the ones they give Fullback crews for a mere few billion dollars. The engineering is only tens of millions. Getting the parts produced in multiple states and getting them issued to the crews in the right quantities is where the billions go.
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Apr 15, 2021 21:53
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https://flic.kr/p/2hyDmgX I noticed this the other day, and perhaps I'm just being ignorant here, but it seems to me like having that much of the mechanical internals exposed when the rotors are tilted for VTOL isn't the most brilliant design decision. Particularly for something that's going to be kicking up a lot of dirt/rocks/sand when it lands vertically. Smarter people correct me if I'm wrong, of course.
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Apr 16, 2021 00:44
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Its a flight test prototype. They aren't flying that aircraft off anything other than prepared, FOD-free surfaces.
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Apr 16, 2021 00:46
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If it's like a V22, it'll turn the surface into FOD
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Apr 16, 2021 01:12
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SNiPER_Magnum posted:If it's like a V22, it'll turn the surface into FOD For emphasis: https://www.youtube.com/watch?v=PI9gWlM0QY8
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Apr 16, 2021 02:23
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Apr 16, 2021 02:32
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Caution wake turbulence
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Apr 16, 2021 02:36
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How much of that is an Osprey problem vs say a Chinook?
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Apr 16, 2021 03:27
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I worked at an office by the FBO at KMCC before I got into aviation and V22s would show up every now and again. They made such a freaking racket I could hear them from inside a conference room. I would go outside with a pilot friend and we'd sit there, drink coffee and watch them do their weird rolling takeoffs. Fun times. 
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Apr 16, 2021 03:29
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Cat Hatter posted:How much of that is an Osprey problem vs say a Chinook? My understanding is that it's very much an Osprey problem. It's outside my wheelhouse and I'd appreciate a technical explanation. My guess is that a Chinook and Osprey have about the same weight, and the Chinook has about twice the rotor area. So to get the same lift, the Osprey rotors need to be whipping around fast as poo poo, which generates tons of vortices off the rotor tips.
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Apr 16, 2021 04:05
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SNiPER_Magnum posted:My understanding is that it's very much an Osprey problem. It's outside my wheelhouse and I'd appreciate a technical explanation. Weight per rotor disk area, aka disk loading. Pretty much the equivalent measure to wing loading in airplanes.
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Apr 16, 2021 04:10
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Also the jet blast from a chinook goes out the back, and an osprey blasts straight down
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Apr 16, 2021 04:37
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I live right under the flight path for the DC to Mount Weather flight path, and before and after the State of the Union, HMX-1 usually uses their MV-22s to move the Designated Survivor. It's surreal hearing it coming from miles off, flying low, and as it gets closer, you can feel minor *ground tremors* like the T-Rex from Jurassic Park took meth. Of course, anyone who lives in the DC area/Northern Virginia knows what Blackhawks sound like by heart now ever since the Army has been running CoG rehearsal flights for the better part of a loving decade now out of Davison at Ft. Belvoir.
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Apr 16, 2021 04:51
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SNiPER_Magnum posted:My understanding is that it's very much an Osprey problem. It's outside my wheelhouse and I'd appreciate a technical explanation. As said above, it's disk loading. The Chinook probably has way more than double the area. The same energy is concentrated in a smaller area, which means a lot higher force. It probably has more vortices, but it's the main blast of lifting thrust that does it. A Harrier would be even worse.
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Apr 16, 2021 05:55
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I don't know if the math is supposed to be more complicated than MTOW divided by rotor disk swept area, but by that measure the CH-47 has a disc loading of around 9 pounds per square foot, and the V-22 around 18.
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Apr 16, 2021 06:04
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Heres a story about a man that fell out of a 787 wheel well https://www.theguardian.com/world/2021/apr/15/man-who-fell-from-the-sky-airplane-stowaway-kenya-london I would blow Dane Cook fucked around with this message at 06:51 on Apr 16, 2021 |
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Apr 16, 2021 06:31
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I was mildly surprised to see an Extra 300 buzzing around south of Charlotte earlier today. Are they particularly common? My understanding, exclusively from one of the old Flight Simulators, was that they are aerobatic dicking around planes and thus would likely be less likely to pop up than your garden variety Cessna or Piper.
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Apr 16, 2021 19:23
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Warbird posted:I was mildly surprised to see an Extra 300 buzzing around south of Charlotte earlier today. Are they particularly common? My understanding, exclusively from one of the old Flight Simulators, was that they are aerobatic dicking around planes Stressed for +/- 10G with 1 occupant, so yeah, that is exactly what they are. Flight Chops has several videos on training for aerobatics in an Extra 300L https://www.youtube.com/watch?v=LM4F6Xscm98
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Apr 16, 2021 21:59
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SNiPER_Magnum posted:My understanding is that it's very much an Osprey problem. It's outside my wheelhouse and I'd appreciate a technical explanation. Chinook rotor RPM: 225 at 100% power Osprey rotor RPM: 412 in helicopter mode
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Apr 17, 2021 00:48
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vessbot posted:Weight per rotor disk area, aka disk loading. Pretty much the equivalent measure to wing loading in airplanes. Looked up the numbers: pre:Disk Loading lb/sqft // Induced Velocity ft/s // maximum downwash ft/s CH-46D 4.73 34.51 69.0 UH-1N 4.90 35.11 70.2 UH-3 6.18 39.44 78.8 Mi-17 6.35 40.00 80.0 Lynx 7.02 42.03 84.0 CH-47 7.36 43.06 86.1 UH-60L 8.22 45.49 90.9 CH-53D 8.99 47.56 95.1 UH-101 9.69 49.39 98.7 AH-64A 10.13 50.49 101.0 CH-53E 12.26 55.53 111.1 V-22 20.38 71.61 143.2
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Apr 17, 2021 03:36
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Oh hey, I found another perspective of that Osprey turning people into FOD: https://www.youtube.com/watch?v=Q-MP2tKhmQo Sound warning, obviously.
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Apr 17, 2021 04:36
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Goddamn, that is a lot of flying debris.
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Apr 17, 2021 13:27
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