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tehchekt
May 7, 2007
something cool and profound

http://en.wikipedia.org/wiki/The_Motherland_Calls
:ussr:

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Megillah Gorilla
Sep 22, 2003

If only all of life's problems could be solved by smoking a professor of ancient evil texts.



Bread Liar
The Motherland Falls!

Lonely Swedish
Aug 13, 2010


MIT has invented a camera capable of recording a trillion frames per second. This is an image from a video created of a pulse of light scattering through a coke bottle. Technically the video in the link (the light pulse sequence happens at about 1:47) was created by combining many repetitions because the camera only sees one spatial dimension, but the end result is pretty freaking :science:

The same technique can also be used to see around corners. gently caress I love living in the future.

1stGear
Jan 16, 2010

Here's to the new us.

Lonely Swedish posted:

The same technique can also be used to see around corners. gently caress I love living in the future.

And we all laughed about "Enhance zoom rotate enhance". Guess we owe Ridley Scott some apologies.

Vidaeus
Jan 27, 2007

Cats are gonna cat.

Lonely Swedish posted:



MIT has invented a camera capable of recording a trillion frames per second. This is an image from a video created of a pulse of light scattering through a coke bottle. Technically the video in the link (the light pulse sequence happens at about 1:47) was created by combining many repetitions because the camera only sees one spatial dimension, but the end result is pretty freaking :science:

The same technique can also be used to see around corners. gently caress I love living in the future.

I watched the TED lecture on this the other night when I took mushrooms and holy poo poo my brain almost leaked out my ears.

Choronzons son
Mar 1, 2011

Vidaeus posted:

I watched the TED lecture on this the other night when I took mushrooms and holy poo poo my brain almost leaked out my ears.

To be fair, if the shrooms are any good watching your sofa cushions should do the trick.

Still, that's some badass science.

Darth Freddy
Feb 6, 2007

An Emperor's slightest dislike is transmitted to those who serve him, and there it is amplified into rage.
Wait, does that mean that camera is actually recording light travel? Like recording at the speed of light?

Atticus_1354
Dec 10, 2006

barkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbarkbark

Here's another angle.




That's to bad. I hope they get it fixed.

DoleMIGHTY
Oct 23, 2007
uncle bens low fat puaddings

Darth Freddy posted:

Wait, does that mean that camera is actually recording light travel? Like recording at the speed of light?

If I understand correctly, it's not actually seeing the source light travel through space, but they're seeing its interactions with objects by looking at the scatter patterns (?)

Kind of like ultrasound. You're not actually seeing the sound waves themselves, but gathering the signals that bounce back after hitting the object being examined, and interpreting those signals to figure out the shape and distance of the object.

Could be wrong, feel free to correct.

Mr. Gibbycrumbles
Aug 30, 2004

Do you think your paladin sword can defeat me?

En garde, I'll let you try my Wu-Tang style

Lonely Swedish posted:

The same technique can also be used to see around corners. gently caress I love living in the future.

Future Paparazzi are going to be hardcore

Factor Mystic
Mar 20, 2006

Baby's First Post-Apocalyptic Fiction

DoleMIGHTY posted:

If I understand correctly, it's not actually seeing the source light travel through space, but they're seeing its interactions with objects by looking at the scatter patterns (?)


Even more boring, they repeat the event many times with slight timing differences to build what appears to be a continuous shot. So a "trillion frames per second" is slightly misleading because the event itself has to be repeatable to get that final imaging.

DoleMIGHTY
Oct 23, 2007
uncle bens low fat puaddings

Factor Mystic posted:

Even more boring, they repeat the event many times with slight timing differences to build what appears to be a continuous shot. So a "trillion frames per second" is slightly misleading because the event itself has to be repeatable to get that final imaging.

Comparable to taking "slow motion" video of, say, a sprinter, by having him run the 100m a trillion times, and taking a picture of the entire 100m track with a picosecond increase in delay each time?

Pirate Radar
Apr 18, 2008

You're not my Ruthie!
You're not my Debbie!
You're not my Sherry!

Mr. Gibbycrumbles posted:

Future Paparazzi are going to be hardcore

Future Beverly Hills houses are going to have a ton of corners.

madlilnerd
Jan 4, 2009

a bush with baggage

Chantilly Say posted:

Future Beverly Hills houses are going to have a ton of corners.

I think I read somewhere that Chinese architecture in temples traditionally has a lot of corners because certain demons can't go round them. Clearly paparazzi are a kind of demon.

Lonely Swedish
Aug 13, 2010

DoleMIGHTY posted:

Comparable to taking "slow motion" video of, say, a sprinter, by having him run the 100m a trillion times, and taking a picture of the entire 100m track with a picosecond increase in delay each time?

Yeah, that's pretty much the gist of it. Except that the sprinter runs the distance in about a nanosecond (one billionth), so you only have to repeat it a few hundred times to make a video clip a few seconds long:

MIT posted:

Fastest electronic sensors have exposure time in nanoseconds or hundreds of picoseconds. To capture propagation of light in a tabletop scene we need sensor speeds of about 1 ps or one trillion frames per second. To achieve this speed we use a streak tube. The streak camera uses a trick to capture a one dimensional field of view at close to one trillion frames per second in a single streak image. To obtain a complete movie of the scene we stitch together many of these streak images. The resulting movie is not of one pulse, but is an average of many pulses. By carefully synchronizing the laser and camera we have to make sure each of those pulses look the same.

It's not yet as cool as its potential, but a "shutter speed" on the order of picoseconds (trillionths) is pretty mind-blowing in and of itself.

Brother Jonathan
Jun 23, 2008

jamal
Apr 15, 2003

I'll set the building on fire

Lonely Swedish posted:

Yeah, that's pretty much the gist of it. Except that the sprinter runs the distance in about a nanosecond (one billionth), so you only have to repeat it a few hundred times to make a video clip a few seconds long:


It's not yet as cool as its potential, but a "shutter speed" on the order of picoseconds (trillionths) is pretty mind-blowing in and of itself.

I think that even to get a reasonable exposure they have to take the same shot over and over again at the same time/place as well.

moosepoop
Mar 9, 2007

GET SWOLE
Who knew bomber spyplane crews could be so bad rear end.

moosepoop has a new favorite as of 11:37 on Aug 24, 2012

Snowglobe of Doom
Mar 30, 2012

sucks to be right

Heintron posted:

Who knew bomber crews could be so bad rear end.


They look like they're about to break into a dance routine. An awesome dance routine.

Captain Splendid
Jan 7, 2009

Qu'en pense Caffarelli?

Heintron posted:

Who knew bomber crews could be so bad rear end.


They're stood in front of a U-2 so they're actually spy plane crews. They fly to about 70,000ft, that's why they're wearing what look like spacesuits.

DrBouvenstein
Feb 28, 2007

I think I'm a doctor, but that doesn't make me a doctor. This fancy avatar does.

Captain Splendid posted:

They're stood in front of a U-2 so they're actually spy plane crews. They fly to about 70,000ft, that's why they're wearing what look like spacesuits.

U2?

Pfft, that's like a WWI bi-plane compared to this glorious monument to aviation:



America....gently caress YEAH! :911: :patriot:

quote:

One moonless night, while flying a routine training mission over the Pacific, I wondered what the sky would look like from 84,000 feet if the cockpit lighting were dark. While heading home on a straight course, I slowly turned down all of the lighting, reducing the glare and revealing the night sky. Within seconds, I turned the lights back up, fearful that the jet would know and somehow punish me. But my desire to see the sky overruled my caution, I dimmed the lighting again. To my amazement, I saw a bright light outside my window. As my eyes adjusted to the view, I realized that the brilliance was the broad expanse of the Milky Way, now a gleaming stripe across the sky. Where dark spaces in the sky had usually existed, there were now dense clusters of sparkling stars Shooting stars flashed across the canvas every few seconds. It was like a fireworks display with no sound. I knew I had to get my eyes back on the instruments, and reluctantly I brought my attention back inside. To my surprise, with the cockpit lighting still off, I could see every gauge, lit by starlight. In the plane's mirrors, I could see the eerie shine of my gold spacesuit incandescently illuminated in a celestial glow. I stole one last glance out the window. Despite our speed, we seemed still before the heavens, humbled in the radiance of a much greater power. For those few moments, I felt a part of something far more significant than anything we were doing in the plane.

(From here.)

Bip Roberts
Mar 29, 2005

DrBouvenstein posted:

U2?

Pfft, that's like a WWI bi-plane compared to this glorious monument to aviation:



America....gently caress YEAH! :911: :patriot:


(From here.)

Are those streaks on the wings the fuel it leaks when the plane isn't heated up from going supersonic speeds?

Rigged Death Trap
Feb 13, 2012

BEEP BEEP BEEP BEEP

Dusseldorf posted:

Are those streaks on the wings the fuel it leaks when the plane isn't heated up from going supersonic speeds?

Condensation from the pressure on the wing.

Black Griffon
Mar 12, 2005

Now, in the quantum moment before the closure, when all become one. One moment left. One point of space and time.

I know who you are. You are destiny.


DrBouvenstein posted:

quote:

One moonless night, while flying a routine training mission over the Pacific, I wondered what the sky would look like from 84,000 feet if the cockpit lighting were dark. While heading home on a straight course, I slowly turned down all of the lighting, reducing the glare and revealing the night sky. Within seconds, I turned the lights back up, fearful that the jet would know and somehow punish me. But my desire to see the sky overruled my caution, I dimmed the lighting again. To my amazement, I saw a bright light outside my window. As my eyes adjusted to the view, I realized that the brilliance was the broad expanse of the Milky Way, now a gleaming stripe across the sky. Where dark spaces in the sky had usually existed, there were now dense clusters of sparkling stars Shooting stars flashed across the canvas every few seconds. It was like a fireworks display with no sound. I knew I had to get my eyes back on the instruments, and reluctantly I brought my attention back inside. To my surprise, with the cockpit lighting still off, I could see every gauge, lit by starlight. In the plane's mirrors, I could see the eerie shine of my gold spacesuit incandescently illuminated in a celestial glow. I stole one last glance out the window. Despite our speed, we seemed still before the heavens, humbled in the radiance of a much greater power. For those few moments, I felt a part of something far more significant than anything we were doing in the plane.

Holy poo poo, I want to go to there. I gotta get this close to space at one point or another.

haveblue
Aug 15, 2005



Toilet Rascal

Black Griffon posted:

Holy poo poo, I want to go to there. I gotta get this close to space at one point or another.

There is a book called Sled Driver that you can try to track down if you want to read a lot more stories like that, written by the same person who wrote that quote. It is, however, extremely rare and extremely expensive.

ephphatha
Dec 18, 2009




DrBouvenstein posted:

U2?

Pfft, that's like a WWI bi-plane compared to this glorious monument to aviation:

As much as I love the SR-71, the U-2 is an absolute prick of a plane to fly and so the pilots who actually put up with it are that much more bad-rear end.

http://en.wikipedia.org/wiki/Lockheed_U-2 posted:

High-aspect-ratio wings give the U-2 some glider-like characteristics, with a lift-to-drag ratio estimated in the high 20s. To maintain their operational ceiling of 70,000 feet (21,000 m), the U-2A and U-2C models (no longer in service) must fly very near their maximum speed. The aircraft's stall speed at that altitude is only 10 knots (12 mph; 19 km/h) below its maximum speed. This narrow window was referred to by the pilots as the "coffin corner". For 90% of the time on a typical mission the U-2 was flying within only five knots above stall, which might cause a decrease in altitude likely to lead to detection, and additionally might overstress the lightly built airframe.[5]
The U-2's flight controls are designed around the normal flight envelope and altitude at which the aircraft was intended to fly. The controls provide feather-light control response at operational altitude. However, at lower altitudes, the higher air density and lack of a power-assisted control system makes the aircraft very difficult to fly. Control inputs must be extreme to achieve the desired response in flight attitude, and a great deal of physical strength is needed to operate the controls in this manner.
The U-2 is very sensitive to crosswinds which, together with its tendency to float over the runway, makes the U-2 notoriously difficult to land. As the aircraft approaches the runway, the cushion of air provided by the high-lift wings in ground effect is so pronounced that the U-2 will not land unless the wing is fully stalled. To assist the pilot, the landing U-2 is paced by a chase car (usually a "souped-up" performance model including a Ford Mustang SSP, Chevrolet Camaro B4C, Pontiac GTO, and the Pontiac G8 GT) with an assistant (another U-2 pilot) who "talks" the pilot down by calling off the declining height of the aircraft in feet as it decreases in airspeed.
Instead of the typical tricycle landing gear, the U-2 uses a bicycle configuration with a forward set of main wheels located just behind the cockpit, and a rear set of main wheels located behind the engine. The rear wheels are coupled to the rudder to provide steering during taxiing. To maintain balance while taxiing, two auxiliary wheels, called "pogos" are added for takeoff. These fit into sockets underneath each wing at about mid-span, and fall off during takeoff. To protect the wings during landing, each wingtip has a titanium skid. After the U-2 comes to a halt, the ground crew re-installs the pogos one wing at a time, then the aircraft taxis to parking.[11]

Key points:
Max speed at operating altitude - 805km/h
Stall speed at operating altitude - 785km/h
Landing requires a spotter, stalling the plane, and dragging a wingtip on the ground.

Some Pinko Commie
Jun 9, 2009

CNC! Easy as 1️⃣2️⃣3️⃣!

gooby on rails posted:

There is a book called Sled Driver that you can try to track down if you want to read a lot more stories like that, written by the same person who wrote that quote. It is, however, extremely rare and extremely expensive.

Holy poo poo you weren't kidding.

Phanatic
Mar 13, 2007

Please don't forget that I am an extremely racist idiot who also has terrible opinions about the Culture series.

DrBouvenstein posted:

U2?

Pfft, that's like a WWI bi-plane compared to this glorious monument to aviation:



America....gently caress YEAH! :911: :patriot:


(From here.)

Ah, here's the best, baddest-rear end, most :smug: story from that thing:

quote:

There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane--intense, maybe, even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment.

It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet.

I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury. Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace.

We listened as the shaky voice of a lone Cessna pilot who asked Center for a read-out of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground." Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional tone that made one feel important. I referred to it as the "Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios.

Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed in Beech. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren.

Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check." Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a read-out? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground." And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done--in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn.

Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it--the click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request.

"Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground." I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money."

For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A. came back with, "Roger that Aspen. Your equipment is probably more accurate than ours. You boys have a good one."

Blimpkin
Dec 28, 2003

Phanatic posted:

Ah, here's the best, baddest-rear end, most :smug: story from that thing:

HOLY poo poo I'm getting this.

joneswt
Feb 22, 2011

Can I borrow it after you are done?

Snowglobe of Doom
Mar 30, 2012

sucks to be right

Phanatic posted:

Ah, here's the best, baddest-rear end, most :smug: story from that thing:

I'm not even American but :patriot:

haveblue
Aug 15, 2005



Toilet Rascal

Wow, that's even worse than I thought. The softcover printing usually goes for ~250 used (475 new).

Phanatic
Mar 13, 2007

Please don't forget that I am an extremely racist idiot who also has terrible opinions about the Culture series.

Snowglobe of Doom posted:

I'm not even American but :patriot:

The thing that blows my mind most about that airplane isn't even the airplane, it's the engines. That engine was built in 1958. *1958*. The Commodore 64 I had as a kid would have been a computing miracle, you could have conquered the loving world with it. Automobile engines still couldn't deliver one horsepower per cubic inch. B-29 bombers were still flying.

And Lockheed built a hybrid ramjet capable of sustained full-power operation at Mach 3+. Look at this loving afterburner stage:

1stGear
Jan 16, 2010

Here's to the new us.
I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane.

Rigged Death Trap
Feb 13, 2012

BEEP BEEP BEEP BEEP

1stGear posted:

I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane.

All of them are.
I wish all commercial pilots had the 'Houston Center Voice'.

Phy
Jun 27, 2008



Fun Shoe
Isn't there a comedian who has a routine about how people from the South and Texas sound like complete hicks, right up until you hear them over the intercom in the cockpit, where suddenly that accent means the person up there is the most collected and competent son of a bitch in the world?

Phanatic
Mar 13, 2007

Please don't forget that I am an extremely racist idiot who also has terrible opinions about the Culture series.

1stGear posted:

I don't know who's the bigger badass in the story, Walter or the air traffic controller who, upon realizing a goddamn Blackbird was in his airspace, just calmly rattled off their speed like any other plane.

There's another where a Blackbird has to enter someone's Class A airspace, not sure who. They call the tower:

"(Callsign) requesting flight level 550." (That's 55,000').

Tower responds: "If you can get there, it's yours."

"Roger. Descending to FL550."

Joey Freshwater
Jun 20, 2004

Always playing with my meat
Grimey Drawer
God drat that's cool

Dick Trauma
Nov 30, 2007

God damn it, you've got to be kind.
In 1970 an F-106 went into a flat spin during a training mission over Montana. The pilot rode the plane down for four miles trying to recover from the spin. Part of the protocol was to hit a control that set all the trim for landing. He couldn't recover and punched out at 15,000 feet.

The plane proceeded to quickly sort itself out and fly straight and level. One of his wingmen radioed "Gary, you'd better get back in." :black101:

The jet eventually brought itself in for a gentle landing due to the pilot having set it up for landing prior to having to eject.

Where the jet came to rest in a cornfield.


Relatively minor damage from the belly-landing.


But the story doesn't end there. Local law enforcement arrived on the scene before the Air Force and the sheriff called the base because the engine was still roaring away. He was given instructions on how to throttle down and throw the master breaker and this cop actually climbed up onto a crashed jet that still had the engine running to try and shut it down! :clint:

Unfortunately the snow under the jet was being melted from the engine heat and the jet shifted and started to scoot along the snow. The sheriff jumped off and the plane went another 400 feet before finally stopping.

The jet was recovered and went into storage for a few years before being brought back out, repaired and flown until at least the 1980s.

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joat mon
Oct 15, 2009

I am the master of my lamp;
I am the captain of my tub.
Another (almost not) badass SR-71 story.

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