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BIG HEADLINE posted:Oh hey, I found another perspective of that Osprey turning people into FOD: https://www.youtube.com/watch?v=Q-MP2tKhmQo So the mission objective is to warn the enemy early, then try to deafen them. THEN once they appear, throw all loose poo poo around at anyone stupid enough to hang around to see what's coming. THEN the Marines come out and get shot to poo poo IF the Osprey doesn't crash first or get shot being such a big juicy target. Gotchya!
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Apr 17, 2021 13:34
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Never too many decades to post this V-22 cartoon:
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Apr 17, 2021 14:58
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Humphreys posted:So the mission objective is to warn the enemy early, then try to deafen them. THEN once they appear, throw all loose poo poo around at anyone stupid enough to hang around to see what's coming. THEN the Marines come out and get shot to poo poo IF the Osprey doesn't crash first or get shot being such a big juicy target. Hey, deafening everyone works for the Tu-95! Actually that kinda belongs in a vintage aviation ad: The V-22 Osprey: Generate Your Own FOD
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Apr 17, 2021 17:33
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Plastic_Gargoyle posted:Hey, deafening everyone works for the Tu-95! Don't even bother doing an FOD walk. Just have an Osprey bomb down the runways with rotors up. I wonder how hot the air coming off the engines is?
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Apr 17, 2021 19:27
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madeintaipei posted:Don't even bother doing an FOD walk. Just have an Osprey bomb down the runways with rotors up. quote:With exhaust deflectors off, the V-22 exhaust temperature at the exit plane is 515 deg F above the ambient temperature decreasing to 150 deg F above ambient temperature at a distance of 4ft 4in below the bottom of the nacelle IR suppressor. The internet is a magical place.
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Apr 17, 2021 19:40
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FuturePastNow posted:Chinook rotor RPM: 225 at 100% power That is a lot slower than I thought. I remember reading the rotor tips would reach slightly transonic speeds, but that appears to be not true at all.
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Apr 18, 2021 01:23
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SNiPER_Magnum posted:That is a lot slower than I thought. I remember reading the rotor tips would reach slightly transonic speeds, but that appears to be not true at all. Correct me if I’m wrong: 38ft*pi*412/min=250m/s, 250m/s/(343m/s)=0.72
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Apr 18, 2021 01:37
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Caught impersonating a pilot, what happens now? (self.LegalAdviceUK)quote:Hi Reddit, I need some help.
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Apr 18, 2021 01:41
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If that's actually a crime in the UK lmfao @ that stupid island. It's not like he's illegally practicing medicine or something. And just telling your neighbors that you do something is not the same as presenting yourself as such for professional purposes, like putting up a sign saying you're an engineer. This is like...telling someone you have a commercial driver's license when you really don't. As long as you aren't actually driving the trucks, who gives a poo poo.
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Apr 18, 2021 02:24
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He says he's got lots of money, so like, why not become a pilot? Also lol at impersonating a pilot like bro it isn't the 60's anymore nobody gives a poo poo or is impressed that you fly planes lolololol
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Apr 18, 2021 02:56
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Just sitting in the park in my pilot outfit, you know, like real pilots do.
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Apr 18, 2021 02:57
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Yeah he should be sitting at a hotel bar.
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Apr 18, 2021 02:59
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Sagebrush posted:If that's actually a crime in the UK lmfao @ that stupid island. Unless they were actively misrepresenting themselves as a pilot to commit fraud or something similar or getting into places they weren't authorised to be, I don't believe that there are any laws on this daft island against claiming you're a pilot to make yourself look good, and it's not a protected title (unlike for example, Airport Fire Fighter, which requires CAA licensing for you to use). Obviously if you tried to get on a plane or into secure areas at an airport that would be a whole other matter of interaction with said rozzers.
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Apr 18, 2021 03:00
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Sagebrush posted:If that's actually a crime in the UK lmfao @ that stupid island. Given the propensity of random English to believe they fought WW2 singlehandedly despite being toddlers or born afterwards, it wouldn't surprise me that they would believe wearing unauthorized uniforms was also a crime. Unless it was them of course, in which case how very dare you Sir.
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Apr 18, 2021 03:34
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hobbesmaster posted:Yeah he should be sitting at a hotel bar. Not an empty quote.
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Apr 18, 2021 04:12
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Peelers evidently means something different over there, here it’s slang for a strip club. So I was picturing his neighbour telling the dancers he wasn’t a real pilot.
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Apr 18, 2021 04:29
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it comes from robert peel, the father of modern narcing
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Apr 18, 2021 05:08
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Those flyboys crack me up.
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Apr 18, 2021 05:15
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Avenger ditched at Cocoa Beach today. https://twitter.com/KamiMoffitt/status/1383474998136819722 Sounds like everyone was okay though. Peep the one surface who almost got squished
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Apr 18, 2021 05:44
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Sounds like that plane only came out of restoration in January 2020. That sucks.
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Apr 18, 2021 06:15
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I can't help but feel like the FAA might put the kibosh on warbirds doing anything other than flyovers and static displays at air shows. *Forget* about ride-alongs. =/
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Apr 18, 2021 06:22
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Those things aren’t getting any newer. I imagine the mechanical bits are pretty rare anymore.
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Apr 18, 2021 08:14
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Ditchings happen, and from a stick and rudder perspective it was expertly done, but that guy really should have done it like a hundred feet further out to reduce the chance of decapitating some kid playing in the waves.
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Apr 18, 2021 08:26
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e.pilot posted:Those things aren’t getting any newer. I imagine the mechanical bits are pretty rare anymore.
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Apr 18, 2021 10:53
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evil_bunnY posted:Also people need to get used to the idea that WW2 engines loving suck. Yeah, these planes failed a lot.
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Apr 18, 2021 11:53
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Recently there was this airliner that confused a taxiway with a runway, discussed here in the thread. MentourPilot is weighing in and from his video it seems like the airplane came as close as 10-15ft from striking one of the airliners on the ground. Had the crew reacted a split-second later, they would have struck them and probably also crashed into the waiting airliner after that. That would have been another Tenerife-like incident. https://www.youtube.com/watch?v=bLEGir9lzBo
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Apr 18, 2021 12:08
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Didn't know Harrison Ford was flying airliners now.
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Apr 18, 2021 15:21
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Lord Stimperor posted:Recently there was this airliner that confused a taxiway with a runway, discussed here in the thread. That was like four years ago. Why is it suddenly showing up in the zeitgeist?
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Apr 18, 2021 18:09
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Sun & Fun 2021 is live - F-22 Demo and first Blue Angels show with the Super Bugs: https://www.youtube.com/watch?v=RrDf0-IHkqg
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Apr 18, 2021 18:14
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Sagebrush posted:That was like four years ago. Why is it suddenly showing up in the zeitgeist? ~algorithm magic~
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Apr 18, 2021 18:58
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F-22 demo is starting at the above link.
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Apr 18, 2021 19:24
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BIG HEADLINE posted:F-22 demo is starting at the above link. For anyone watching later it starts at roughly 2h 02m
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Apr 18, 2021 19:28
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evil_bunnY posted:Also people need to get used to the idea that WW2 engines loving suck. I watched some guys rebuild an engine for a '40s -ish Volkswagen Beetle and despite making lawnmower levels of power it has an eye-watering amount of complexity in comparison to a modern Briggs or Kohler. I imagine even the famed Merlin to be the same situation if you compared to a modern aviation engine.
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Apr 18, 2021 19:43
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Cat Hatter posted:I watched some guys rebuild an engine for a '40s -ish Volkswagen Beetle and despite making lawnmower levels of power it has an eye-watering amount of complexity in comparison to a modern Briggs or Kohler. A modern aviation piston engine like one from the 1950s?
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Apr 18, 2021 19:54
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Blue Angels program estimated for 3:30pm Eastern.
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Apr 18, 2021 20:02
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BIG HEADLINE posted:Blue Angels program estimated for 3:30pm Eastern. Thank you for following social distancing guidelines. The Blue Angels flying over my old place made me seriously question the building's integrity. Brand new condo and it felt like it was going to shake to bits. Amusingly, the little ping pong ball in the roof vent would go crazy like it was in a master-class match between two very small old Chinese women. It was great getting a free show though.
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Apr 18, 2021 20:13
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hobbesmaster posted:A modern aviation piston engine like one from the 1950s? Exactly. Lot of stuff happened after ’33.
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Apr 18, 2021 20:26
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Was it here that someone posted about maintaining Tiger Moths (or something), and how they don't redesign engine parts because 1) they know exactly why and when the original parts fail and 2) they don't know if re-engineering things would break things in unknown ways?
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Apr 18, 2021 20:49
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hobbesmaster posted:A modern aviation piston engine like one from the 1950s?
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Apr 18, 2021 21:37
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Cat Hatter posted:I imagine even the famed Merlin to be the same situation if you compared to a modern aviation engine. For all it's undoubted combat success and its (well-deserved) reputation for reliability and performance, the Merlin was a far from perfect design even in the 1930s. The original PV-12 version (what became the Merlin I) with the separate 'ramp' heads and box combustion chambers was a fundamentally unworkable design that was plagued by severe and deep-rooted running and reliability problems. Rolls-Royce had to essentially re-design the engine from scratch and the Merlin II owed much more in its design to the old Kestrel (i.e. going back to one-piece cylinder blocks and heads and stressed cylinder liners) than the original PV-12/Merlin I. It was little more than a Kestrel re-drawn to the basic dimensions of the PV-12. The Merlin also embodied a lot of typically British approaches to design, mostly by being far to complicated - it consisted of loads of little, individual parts assembled into sub-components, which were then assembled into sub-assemblies, which were then assembled into ancillaries, which were then bolted to the block to create the engine. All held together with far too many screws, bolts, shims and cotter pins and all of varying sizes. Rolls-Royce engineering was summed up as "a triumph of development over design" and that's just spot on. When an engine was on the drawing board the approach was a combination of 'what we did last time' combined with 'suck it and see' when it came to changes. Then everything was adapted from the results of the testing and service experience - an extra bolt here, a larger dowel pin there, a slightly thicker block casting wall here, a change to the thread pitch on a liner retaining stud there and so on. And very rarely was any real consideration given to maintenance or overhaul time. The Merlin only succeded because of British access to 100-octane fuel and Rolls-Royce's experience with wringing maximum power from every cubic inch from the days of the Schneider Trophy, which allowed the Merlin to produce a lot of power for its size. Then Stanley Hooker came aboard and gifted Rolls-Royce the global lead in supercharger and induction system design, making the Merlin the best-performing V12 aero-engine in the world in the 1940s and allowing it to keep pace with requirements throughout the war. Rolls-Royce also had access to a lot of government money and expertise to keep working out the (many) bugs in the Merlin, such that by 1943 they had almost completely redesigned it a second time, going back to the separate cylinder heads (but still with stressed liners). In the interim the Griffon was a 'clean sheet' design based on the same principles as the original Merlin but integrating all the lessons learnt from that engine's atrocious start in life as well as a lot of other long overdue improvements (many of which reflected practise in foreign aero engines) such as the hollow crankshaft to supply oil directly to the big end bearings and driving the supercharger, camshafts and magentos via a quill shaft from the reduction gear rather than a second gearset at the back of the engine. The interesting contrast is with the Allison V-1710, which was almost the exact opposite of the Merlin. Reflecting GM's experiences with mass production, it was a modular design (using a standard 'power core' on to which virtually any combination of accessories and drive options could be bolted), unified and minimised fixings and a huge degree of over-specification in the basic major components of the engine (for instance the Allison crankshaft was built and balanced to withstand operation up to 4000rpm, even though no production model was ever rated at more than 3000rpm). An Allison contained only 60% of the total number of components than a Merlin and required only half the amount of time to overhaul. What it lacked was a decent supercharger/induction system. If the USAAF had favoured superchargers rather than looking slightly too far ahead and demanding turbochargers for high-altitude work, or if Stanley Hooker had been seconded to Allison to do their induction and tuning work, you'd end up with an engine with the design and build of the Allison and the performance of the Merlin.
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Apr 18, 2021 23:00
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