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slidebite posted:I would love to see a cockpit video of an SR71 flight at altitude and speed. Were any ever done and released to the public? I'd love to see one too. The footage from James May trip in a U-2 was amazing, imagine that 15,000 ft higher at mach 3.2.
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Sep 17, 2011 22:20
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I found a better sound than that other sound.
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Sep 17, 2011 22:33
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Bondematt posted:Isn't this impossible due to the decreasing efficiency of prop engines as they reach the speed of sound or does it just make it a bitch? The issue with getting a propeller driven aircraft supersonic isn't the engine, but the propeller itself. As propeller blades approach Mach 1, shockwaves start to form on the tips of the blades, and those shockwaves produce a considerable amount of vibration and noise, as well as a loss of thrust as the airflow separates from the blades. Changing the blade design can alleviate some of those effects and allow a propeller to operate with supersonic blades, and NASA actually designed and wind-tunnel tested propeller designs that could operate with the blades moving well above the speed of sound, although I don't know that they were ever flight tested. Fitting a supersonic propeller to an airframe also poses some aerodynamic issues, since the shockwaves from the propeller blades would start interacting with the shockwaves forming ahead of the aircraft as it approached Mach 1, which could cause vibration or controllability issues. With a purpose-built supersonic prop and a sufficently powerful engine, getting a propeller driven aircraft to break Mach 1 in level flight should be possible, but the development and construction costs probably mean that it won't happen unless a major aircraft manufacturer or government agency decided to build one.
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Sep 17, 2011 23:03
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InterceptorV8 posted:I hope I live long enough to see a piston driven prop airplane hit Mach 1. Have a look at reports on the physical effects to those within 10km of the thunderscreech on startup. Rotating shockwaves are not a good thing.
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Sep 17, 2011 23:20
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Captain Postal posted:Have a look at reports on the physical effects to those within 10km of the thunderscreech on startup. Rotating shockwaves are not a good thing. The best part about that is the air force pretty much told them to gently caress off and go to the desert if they wanted to do a run up.
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Sep 17, 2011 23:30
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Captain Postal posted:Have a look at reports on the physical effects to those within 10km of the thunderscreech on startup. Rotating shockwaves are not a good thing. This exactly. We don't have supersonic prop-driven airplanes for reasons other than "we simply aren't capable of making them." ursa_minor fucked around with this message at 23:48 on Sep 17, 2011 |
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Sep 17, 2011 23:31
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Can we seriously stop posting pictures of the gore? please?
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Sep 18, 2011 01:05
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Revolvyerom posted:Can we seriously stop posting pictures of the gore? please? None of it is really gore. You can tell there may be something, but it also might not be.
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Sep 18, 2011 01:09
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VikingSkull posted:I really wish the news and GBS posters would understand that the plane in question wasn't a P-51. That and ZOMG HOW ON EARTH CAN AN OLD GUY FLY A PLANE??!! WHY DO WE HAVE AIRSHOWS!!??!! loving MAGNETS!
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Sep 18, 2011 01:49
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Dr JonboyG posted:That book is a crime against humanity. Well, Aviation, at any rate. That's more then a bit hyperbolic; the part that this guy is criticizing hasn't even come up yet. It's been 99% a story of cool aircraft and cold war paranoia so far. I'll let the thread know how things turn out. The only criticism I have about it so far is occassionally the author makes little mistakes in how things are described. She talks about the Powers incident, and uses the phrase "a missile from an SA-2 fired into the air" instead of "an SA-2 missile was fired"; it's nothing big but tells me the author isn't as familiar with the subject matter as, uh, us nerds on the internet. Nebakenezzer fucked around with this message at 02:08 on Sep 18, 2011 |
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Sep 18, 2011 01:56
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Phanatic posted:The guy who said that one wing is half the size of the other wing had to be trolling. I just...he *had* to be. In an old DnD thread about the usefulness of the F-22 and the F-35, somebody argued that the F-22 is necessary because in Vietnam America was still using *biplanes.* It turns out he meant prop planes. After having the difference explained to him, he was all "who cares, that doesn't affect my argument." 
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Sep 18, 2011 02:05
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Nebakenezzer posted:In an old DnD thread about the usefulness of the F-22 and the F-35, somebody argued that the F-22 is necessary because in Vietnam America was still using *biplanes.* It turns out he meant prop planes. After having the difference explained to him, he was all "who cares, that doesn't affect my argument." He was so close, too, because the North Vietnamese used AN-2 Colts 
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Sep 18, 2011 02:42
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VikingSkull posted:He was so close, too, because the North Vietnamese used AN-2 Colts  This actually happened.
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Sep 18, 2011 02:53
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Dr JonboyG posted:That book is a crime against humanity. Well, Aviation, at any rate. I love that crazy cold war stuff. Here's an old Airacomet with a genuine fake prop at an airshow. 
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Sep 18, 2011 03:02
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Speaking of the P-51, went to an air show today that had two of them. Old Red Nose and Ain't Misbehavin' which are two of my favorites.   and throw in a L-39 for good measure:  Still adding more over the next couple of days but had to get those up tonight at least.
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Sep 18, 2011 03:55
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iyaayas01 posted:
 Helicopters intercepting biplanes and shooting them down with small arms sounds like some sort of weird alternate-history novel. slidebite posted:That and ZOMG HOW ON EARTH CAN AN OLD GUY FLY A PLANE??!! Just seen on the stupid newsblurb thing on the online cable guide: "Air races provide thrills for pilots, but are very dangerous."
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Sep 18, 2011 04:20
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Nebakenezzer posted:Just seen on the stupid newsblurb thing on the online cable guide: "Air races provide thrills for pilots, but are very dangerous." drat those pilots getting their jollies at the public expense! Why can't they stop entrapping these poor audiences?
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Sep 18, 2011 05:15
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Blistex posted:I've heard at least ten people moaning, "OH no, we lots another P-51! There are so few left!". This is why stupid people shouldn't make posts. The ghost was a racer since 1949. Next up we are going to be listening to loving morons talk about how Rare Bear is a sin against Bearcats and how it was lost when it was rebuilt from a crash in 1969 that left it on the side of an airfield. And we all know what that rear end in a top hat Smokey did with all those Chevys and Nascar...
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Sep 18, 2011 05:46
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Nebakenezzer posted:
The whole story is pretty nuts...if you're interested in a good read "One Day Too Long" is excellent. It covers the whole story, from the initial idea to the deployment of the radar site, the flaws with the employment, the various North Vietnamese assaults and attempts to take out the site, the final successful assault and overrun of site, and finally the egregious coverup by the U.S. government in order to preserve the secrecy (since we weren't supposed to have any military forces in Laos), which resulted in not giving survivors of the KIA the benefits they were due.
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Sep 18, 2011 05:55
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There are some people that have a bit of a grasp in reality it seems.Great Beer posted:Statistics to the rescue. Or from food poisoning eating the chili dog that's been sitting in the sun for 5 hours.
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Sep 18, 2011 05:59
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I've actually been to more car races where people in the stands got hurt by flying debris than there has been in regards to air shows in the last 30 years. I don't know what that means, but I'm sure the major racing organizations should take notice.
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Sep 18, 2011 12:59
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VikingSkull posted:I've actually been to more car races where people in the stands got hurt by flying debris than there has been in regards to air shows in the last 30 years. I don't know what that means, but I'm sure the major racing organizations should take notice. The safety fences at all the NASCAR tracks do a great job at keeping the big pieces out of the crowd. When Edwards crashed at 'Dega only 8 spectators were treated for minor injuries. Major racing orgs have been taking notice for years due to their own crashes and spectator deaths, hence NASCAR hasn't had a spectator death ever in any of their major divisions and Indycar/CART's last spectator deaths were in '98 & '99 before tires were tethered.
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Sep 18, 2011 15:23
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Quantrill posted:The safety fences at all the NASCAR tracks do a great job at keeping the big pieces out of the crowd. When Edwards crashed at 'Dega only 8 spectators were treated for minor injuries. Major racing orgs have been taking notice for years due to their own crashes and spectator deaths, hence NASCAR hasn't had a spectator death ever in any of their major divisions and Indycar/CART's last spectator deaths were in '98 & '99 before tires were tethered. They never had deaths at Reno, either. It's going to happen at some track one day, maybe not the big leagues, but it's going to happen.
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Sep 18, 2011 17:10
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Just saw on the news they found some camera memory cards in the wreckage of Galloping Ghost and the NTSB are hoping there's some cockpit video on them
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Sep 19, 2011 04:30
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^^ That will be interesting. Hope it's from the aircraft and not some poor bastard on the ground that got vaporized. And the media hype/knee jerk is well under way http://www.ctv.ca/CTVNews/TopStories/20110918/reno-air-race-crash-probe-110918/ Airplane had RADICAL MODIFICATIONS!   I can't wait until this dies out of the news.
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Sep 19, 2011 05:03
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ursa_minor posted:This exactly. We don't have supersonic prop-driven airplanes for reasons other than "we simply aren't capable of making them." But we do have airplanes where the "normal" prop tips speeds are supersonic. The TU-95 Bear was loud enough to make chase plane pilots sick. Mach in a prop plane is completely possible. Not sane, but within the ream of non bleeding edge engineering. Thunderscreach was just a bad way of doing it. I forgot who was trying to do it last, but I seem to recall it having a turbocharged V8 in it of some sort.
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Sep 19, 2011 06:57
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Oh, so this is where the intelligent conversation about Reno is... I know people have said it multiple times in the last couple pages but jesus christ, the amount of garbage and lack of reading comprehension in the GBS thread is loving maddening... Anyways... carry on
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Sep 19, 2011 07:26
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Three times a page: The pilot was 80, he shouldn't have been flying. The plane was from 1945, and shouldn't have been flying. They're stupid to fly over the stands. The plane wasn't a P51. Repeat every third page... Though I'll make the argument that the plane WAS a P-51 still. In more ways than the million dollar civic is. Something tells me that the tail surfaces were pretty close to stock. And I'd imagine the main spar was still original. The tailplane was pretty close to stock, given that they still were using the same trim mechanism. And still had it setup that without trim it would pitch up, hard. After seeing two of those planes do the same thing, I'd be tacking on a servo tab tonight. ... if I were a racer. I really want to know how they did the cooling on it, given they removed the cooling scoop. I was always under the impression that the stock P51 scoop actually provided thrust. But I can also imagine that at the increased power levels, they'd need more cooling. Which loops me back around to how the hell were they managing it? I find it interesting that they lighten the planes, then chop the wings.
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Sep 19, 2011 07:36
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Thank god the internet didn't exist when the Granville brothers were flying their Gee Bees. After hearing all this talk about the GBS thread, I got over there to look for it, read some current thread titles and decided it would be best to stay in AI. 
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Sep 19, 2011 09:55
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http://www.news.com.au/world/giffords-husband-in-lucky-escape/story-fn6sb9br-1226140441444
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Sep 19, 2011 10:29
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Pride of Australia's journalism, right there. gently caress I hate news.com.au with a seething fury.
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Sep 19, 2011 10:36
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Nerobro posted:I really want to know how they did the cooling on it, given they removed the cooling scoop. I was always under the impression that the stock P51 scoop actually provided thrust. But I can also imagine that at the increased power levels, they'd need more cooling. Which loops me back around to how the hell were they managing it? The Ghost had water injection as cooling, and was pretty famous for the vapor trail it left behind it. The saying was if you saw a racer trailing smoke it was in trouble, if you saw the Ghost not trailing smoke it was in trouble. Although there's no real vapor trail in the videos we've seen, I don't think there was a problem with the engine.
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Sep 19, 2011 12:35
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Nerobro posted:
I'm pretty sure they use a boil off cooling system, whereby the radiator is put in a vat of coolant which heats up and boils off (giving rise to the trail of vapour you see) At the top end that they are running anything disrupting airflow will make a big difference in performance. I've stopped reading the gbs thread the lack of understanding was monumental.
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Sep 19, 2011 12:46
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BonzoESC posted:KLM still flies these; seen them in YYC, flown them MIA-AMS and back. They're quite nice inside. The MD-11 by KLM - for maximum Dutch Roll!  I did fly a Swiss MD11 a couple of times, once to Narita. Not what I'd call an exceptional passenger experience, other than the completely hair-raising descent (I have no idea what the gently caress ATC was doing, but it wasn't very nice) through what felt like an extremely violent thunderstorm. Most unusual thing widebody (if there is such a thing) I've flown was the Virgin A340-600, transatlantic. It is soooo long, if you sit in the back of economy first class is somewhere over the horizon. Virgin had a very nice cabin for those when the 747s were distinctly so-so. The takeoff roll was unnervingly long. To the extent that after about 5 minutes of gentle acceleration which felt like a "fast taxi" I began to get rather concerned we were about to end up in Richmond Park. Cygni posted:Public perception for turboprop aircraft is also abysmal. If you've ever taken a regional hop, you're guaranteed to hear at least one person complaining that they '...have to get in THAT?! Is that SAFE?!' even if its a gorgeous new Saab 2000 or something. I love the 2000. Flew on a crossair one years back and it was lovely. But then I like prop noise. iyaayas01 posted:just finished up reading Fate is the Hunter A book filled with so many harrowing ways to die it made me glad I never finished my PPL!
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Sep 19, 2011 17:17
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atomicthumbs posted:http://www.news.com.au/world/giffords-husband-in-lucky-escape/story-fn6sb9br-1226140441444 poo poo son, if it wasn't for stories like that, you'd never get comments like this: quote:Michael Presley of Rockwall TX Posted at 8:12 AM September 19, 2011: 
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Sep 19, 2011 17:48
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haven't seen this one yet of the crash. http://www.liveleak.com/view?i=68d_1316458488
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Sep 19, 2011 22:07
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Anyone know how long it'll be before they announce some sort of plan for (if?) next year? poo poo, if all theynsay is there'll be a bunch of planes fast-taxiing I'll buy my plane tickets, but I don't want to get stuck on vacation in Nevada if nothing's happening 
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Sep 19, 2011 22:10
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I think to create some good vibes in hopes of the air races being there next year we should organize a 2012 Reno Air Races goon meet...
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Sep 19, 2011 23:13
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Advent Horizon posted:Anyone know how long it'll be before they announce some sort of plan for (if?) next year? I'd guess that it would be at least several months before they figure out anything for next year. Aside from the NTSB investigation, I'm sure the FAA is looking for ways to "fix the problem" to try and save face over what happened, and there's also the issue of finding an insurer to underwrite any races in the future. I was going to go this year but had a job interview instead, so if there's racing next year, I'm sure as hell going to be there.
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Sep 19, 2011 23:25
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atomicthumbs posted:http://www.news.com.au/world/giffords-husband-in-lucky-escape/story-fn6sb9br-1226140441444 Holy poo poo this person needs to be called out for this article.
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Sep 19, 2011 23:31
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