Slashdot Mirror
Scramjet Success in Australia
glengyron writes "Australia's ABC reports today that a University of Queensland team have successfully tested a supersonic scramjet (air-breathing supersonic combustion ramjet engine). Read more here or here. Great to see after previous problems. Does the future of air travel still include those breakfast egg-roll things?"
I would much rather ram Natalie Portman
I just love that word. Scramjet!
sulli
RTFJ.
Umm, yeah. First post... I'm a whore.
Lessee, gag, dildo, handcuffs, spread cheeks... it's the perfect woman!
"Until this morning no organisation, including NASA in the United States, has been able to successfully test fly a scramjet - an air-breathing supersonic engine. "
I'm not too sure about this... donuts on a rope anybody?
www.linuxisforbitches.com
A Short Story by The_Messenger
===///===
"Nik, I'm not comfortable with your hand being on my ass."
"But come on, baby, you know you want it," Nik insisted. How had I, Jeff "Hemos" Bates, gotten myself into such a predicament? Sure, I'd always thought Nik was cute, and even though I never formally came out, Nik always seemed to know the wife was a front all along. And when "Gay" Nik, famous in the Open Source Community for his insatiable desire for rough gay sex, invited me to help him set up his new FreeBSD box, I had an idea something was up. Little did I know that "something" was Nik's ten inches of rock-hard manmeat, pulsing through his faded Levi's jeans like a wild jungle snake.
"Nik, you're hurting me!", I whelped.
"And that's just the way you like it, bitch," Nik snarled. "You know that famous cartoon of the daemon giving it to the penguin in the behind? Thats gonna be you and me, mate," Nate said with a flick of his golden blond highlighted locks. His English accent was so charming... it almost made such awful things sound nice. But no, I mustn't go down that road... "But first," Nik continued, "we must set up this FreeBSD box. FreeBSD is the only true homosexual operating system, and so you will learn it, because I tell you to. I won't have any dirty Linux user sucking my balls."
"Oh, Nik," I whispered, batting my eyelashes, "must you always be so forceful?" Nik slapped my ass and laughed.
"Calm down, you pansy. You don't know the meaning of forceful yet. Now grab that 4.2 CD." I leaned over and grabbed the CD set for FreeBSD 4.2. Nik got his media free from Walnut Creek, because the admins there were terrified of him. Rumour has it that one Walnut Creek operator who refused to send Nik the latest FreeBSD CD kit for free was found in the machine room the next morning duct-taped to a chair with an RJ45 crimper jammed into his bloody asshole. Ever since, Nik has been sent prerelease copies of every FreeBSD set.
All of my administration experience is with Red Hat, so I was a little scared to try a real operating system, but with Nik's expert guidance, I was well on my way to learning this queer OS. Nik showed me how to use the curses-based installation tool to partition my disks, select an installation profile, and set up XFree86. Within an hour, the system was installed, and rebooted back to a command prompt.
I was standing in front of the console when Nik came up behind me.
"How's it going, mate?" he asked.
"Oh, Nik," I said, startled, "you startled me. I'm just trying to mount this CD-ROM's filesystem. The commands are similar, but this Berkely csh takes a little getting used to."
"Let me help, love," he murmured. He stepped closer behind me, and I could feel his hot breath on the back of my neck. I moved my hands away from the keyboard to allow him access, and he mounted the drive with blinding speed. "There, all better. Anything else you need mounted, love?"
"Oh, Nik..." I said quietly, my breath rushing out. Nik stepped closer, and I could feel his hot tool pressing into the depression of my asscrack through his jeans. "Oh, Nik, yes, there is something you could mount." I couldn't take it any longer. This strapping Englishman's dominant sexuality had overcome my fears of public embarrassment, and there I vowed to myself that from that day forward I would be Nik's woman. I threw my arms behind me, grabbed his ass, and pulled him closer. "Show me your hard drive, you naughty little daemon."
"Much obliged," Nik said with a wink. "But I'm anything but little." Nik slowly pulled off his tight jeans and out sprang the biggest, thickest cock I had ever seen. Now I watch a lot of gay pornography, but never in the depths of my deepest homosexual desire had I craved a dick this magnificent. It was like a juicy flank steak, dripping with juices. The aroma of ballcheese wafted up toward me as his mammoth testicles swung like pendulums of eroticism. I lost control and feel to my knees instantly, slobbering greedily at the wonderous thing, struggling, in vain, to fit the monstrous cockhead into my mouth.
"Oh, Nik," I cried, "I want you, I need you, I must have you. Make me your woman."
"And so I will mate, but first I must prepare you. Take off your clothes," Nik commanded. I clumsily undressed, unable to take my eyes off of his prodigious member. Nik reached over to his backpack (the one with the rainbow patches) and took out five jars of Astroglide lubricant. When I was finally naked, Nik looked up.
"Oh, well look at that," Nik said, pointing to my tiny, erect penis. "How cute. It's almost as small as Jon Katz's."
"Now, Nik, don't make fun," I said, sternly.
"I'm just kidding, love. To be honest, I like the 'little boy' look. I see you've shaved your pubes. Nice."
"Oh, Nik, I never had pubes..."
"Even better. You bald testicles remind me of my youth, when I was gang-raped by my daddy and four uncles."
"You were molested too?" I asked, hopeful.
"Of course, mate. All us faggots were. Now turn around and kneel in front of the couch." I did, and Nik proceeded to slather my virgin rosebud with three jars of Astroglide. As he did, he worked his fingers in and out of my asshole. My tiny penis was completely erect, almost touching my navel. Nik reached down and stroked it with two fingers (all that was necessary) was he prepared my anus. I moaned and sighed, and called out Rob Malda's name several times in my ecstacy. But Nik stopped before I could waste my seed, and stood back.
" Hemos, I think you've inspected my hard disk for long enough. Now I'm going to give your box more RAM."
"Oh, yes, Nik, RAM my box! R007 m3! 0wn me!"
"Hemos, it gets me so hot when you speak l337. Keep doing so." I let loose a string of l337 speak which would make even the most k-r4d w4R3z d00d blush, and Nik's penis began the descent towards my throbbing asshole.
"Oh!" I screamed, as Nik's gigantor began to rend my asshole to proportions only G. Oatse had known before. "Oh, Nik, pump my virgin geek asshole! Use and abuse me like Jon Katz did the Slashdot community! Pingflood my rectum like I'm running Red Hat 7! For the love of Barbara Streisand, Slashdot my ass!!"
The pumping and thrusting started, and didn't stop for 78 hours. Nik took me on a wild, shit-caked tour of Heaven, Hell, and San Francisco. I was on the edge of consciousness when he reached climax. He spewed gallons upon gallons of creamy sputum into my rectal cavity, filling my body up with his love. My abdomen swelled up like a water balloon, and I could taste his cum in the back of my throat when the tide finally ceased. I fell to the floor, and Nik stood up.
"Now you are mine, and a l337 FreeBSD user. I dub three Lord Hemos, proud and gay, and you shall sit at my right hand in Wales, where I rule the Court of FreeBSD Committers with an iron fist and a steel cock. Stand up, Lord Hemos, and let me eat your dirty ass."
Nik helped me up, and I weakly stood, amazed, as Nik proceeded to eat my asshole clean. Nik was on his knees behind me, lowered to the same level as the lowest California gigalo. Much like Jesus would wash the feet as his followers, Nik inducted his lovers into his secret cabal of Gay FreeBSD Love by dining on their sore, runny assholes. He ingested his own jizzm, completing the Circle of Gay.
When my rump had healed, I left Michigan (and my wife) on a journey with Nik to the UK, a Gay Wonderland rumoured to be the birthplace of homosexuality. I learned the gay alphabet, gay spelling ("It's 'coluououour', stupid American! Tee hee!"), and to use the gay currency (uro), and had a BSD Daemon tattooed on my ass with the phrase "Property of Gay Nik".
This has all happened so fast! It's hard to believe that only six hours ago, I was Jeff Bates, closeted homosexual and Linux user. I'm so glad that Nik and I got together, and I credit everything to FreeBSD, the l337est and Gayest UNIX-clone in the Universe! I invite you to check out your local FreeBSD user group and check us out!
These days, I'm very busy with FreeBSD and being Nik's trophy wife, but I've also created HEMOS, the Homoerotic Male Outreach service, an organization dedicated to saving poor young men from the perils of heterosexuality and Linux-userhood. We've already saved Cowboy Neal (how could a guy with a name like that not be queer?) and Emmett will be coming along soon. Please join us!
Love,
Lord Hemos the Gay
THE END.
--
I like to watch.
Rome invented scramjets.
A diagram of the difference in design between a ramjet and a scramjet engine can be found here.
For more information, check out the HyShot homepage.
frist prosnt
How come the site says this then?
;-)
"Dr Paull said although the signs so far have been positive, it is still too early to say the scramjet experiment has succeeded. The scramjet experiment took place within only the last few seconds of the flight, lasting almost 10 minutes."
(OK - I'm hair splitting, it looks positive, but jumping the gun like this doesn't help anyone if it turns out that everything was just a fluke
A little planning goes a long way...
Little bit less of a press release, little bit more information including a better explanation of the flight profile at
http://www.mech.uq.edu.au/hyper/hyshot/
Hasn't this propulsion system been used for Aurora and other "black" aircraft for years? Of course, nobody will confirm or deny the existence of such craft, but it would seem a lot of the basic science has already been done.
OK first off, the abc.au news piece was an abomination of English:
"In South Australia's outback history has been made with a team from the University of Queensland successfully flight testing their supersonic air-breathing scramjet engine atop a rocket.
How about:
A University of Queensland team made history today when they launched their super-sonic airbreathing scramjet engine atop a rocket. The test was conducted in the outback and was the first successful one of it's kind.
Yech, even that one sucks, easier to read though.
Anyhow, on to the point. Later in the article, it said data was recorded from the descent. Is that descent back to earth or what? Was it controlled or did it just crash land? The other page has almost as little information too, unfortunately.
Sent from your iPad.
Successful scramjet tests, crazy Japanese rocket flops - I don't know what the refugees are complaining about, look at all the entertainment they get!
--- Why are you wearing that stupid bunny suit? | Why are you wearing that stupid man suit?
Didn't the russians already test ScramJets (brought up to speed by rockets, just like this one) a couple of years back? IIRC it was even successful. Definitely not a first here in Australia, then...
First the Metal Storm, now this!
Soon Australians will be able to fly up to anyone, anywhere in the world, within minutes, and then cut them to ribbons.
I wish I was Australian.
Marc Siry || interactive media professional, motorcycle enthusiast ||
-Guy Montevideo (Finn called him my "father") who was silent now, even as the programs he had devised crawled around us, leeching loads of processing time as they lifted bank accounts from all over the world into this dimension. The others could not see...he slunk away from Finn, and began to speak.
"You don't know what it's like-how I've been these past months. I was stuck in Faustus, the complex, after you turned me in. I didn't kmow what else to do. I made it look like I was committing suicide, and hurtled myself into the network. In here, I had complete control-I could change things there so I wouldn't be detected."
As these words spilled out from Montevideo's lips, I again felt the ache of familiarity, as it was when I first saw Finn. I knew something was wrong with his story...
"I have been-alone down here. For some time, you know?" Guy's voice cracked a bit-his eyes seem to focus on nothing in particular as he paced nervous across the park's dirt path. "But I've made myself a nice place, don't you think? Don't you think people would love to make a home down here? That's how it could be. Not just for the wealthy, either, for everybody! I could be in charge, and I mean, I've invested so much in this place, and it just keeps getting better..."
The eerie approximation of sunlight stretched across our visual field, a tacit example of the control that Guy exercised over his creation. Although breathing was not necessary in this dimension, Guy's chest pounded up and down as his lungs tried to drink in the airless atmosphere. Finn again moved closer...
"I saved your body, Guy! That's right!" Finn pleaded further, trying to touch Guy, although an invisible barrier prevented him from doing so. "You're a coma patient in a hospital far away! They'll never find you! Now Guy, just please, come back to reality."
"Bubba, you don't understand. I AM reality."
Immediately, the memory space that Finn occupied in the digital universe was marked for reuse, and the bits that made up his consciousness in the void were quickly shifted over to another task. The mind that had forged the blueprints of CONSCIOUSNESS-TRANSFER was unceremoniously extinguished. If Montevideo had truly worked alongside Bubba Finn for so long, how could he take him apart in such a manner?
As it was with the Man in the Red Hat before him, Finn's conscious mind was destroyed, leaving only data with no reference points. Without the power of his unique intepretation, the brain's data became nothing more than noise.
Another stood directly in harm's way. "Machiney? Guy? What just happened? Who was that dude?" Joel Cross, my host geek, emerged from behind a virtual bench. Joel trusted me; he allowed me to take my first steps into the human world. Without him, I might have never known the joys of Lik-M-Aid, or the mysterious mouth-pressings of Cora. I would not allow Montevideo to take him from me.
"I worked so hard on this place." Montevideo bellowed at my form. "It's so much better than anywhere else. You can't wreck it, and you can't stop me. Everyone is going to want to come here, you stupid piece of shit!" He spoke painfully, as if every microsecond wasted addressing me was sucking the life out of him.
He began to change, very slowly. His physique became even more defined, as his shirt disappeared...the tint of his flesh became a pale red, and he seemed to grow taller by about six inches. His fists clenched horizontally under his chin, and his elbows swung out, forming perfect 45-degree angles. Thunder and rain undulated out of Montevideo's form and imposed itself into the digital environs, spreading away from him in concentric circles.
"See how I can do that?" Montevideo was screaming now. "I could be sharing this with everybody! Soon they'll be forced to come here, when they realize that they don't have any money...nothing to lose. Then they'll finally see!" I ignored this outburst and concentrated nearly all my efforts on delving into his code...
"Guy! Guy! Calm down, what are you doing, dude?" Joel stood up, his form unaltered by the digital thunderstorm (the module for fluid dynamics/water effects was obviously unfinished). As he drew closer to Montevideo's form, I sifted through his furiously obfuscated code, searching for the bits that kept him in control of this realm. The code split into functions like a mountain stream sluicing into a thousand tiny rivulets...I had to find the one that lead to the top of the mountain. A million empty echoes of Guy slid across my CONSCIOUSNESS-BUFFER, distorted reflections like funhouse mirrors...where was his information hiding?
"Joel! You-you like it here, don't you? You want to live here forever, right? We can see that it's the best! Bubba didn't understand, but he was too old, didn't have the vision. This ATM thing doesn't know either. He tricked you. And now he's trying to kill me. "
Joel was said nothing-fear had gripped his tongue-I believe he realized at that very point that Guy was dangerously insane.
"Joel, you gotta believe me. I've been in the real world. I'm not a machine. And I know-that the real world SUCKS!" The storm evaporated in a microsecond, and Montevideo walked towards Joel, hands outstretched, selling his point. "They don't appreciate people like us out there. Call us geeks, laugh at us, then hire us to fix their fucking computers. You gotta be understanding me, man..." His voice slowed to a desperate croak at the end, as if the air had been completely sucked out of his lungs.
"Joel, why won't you FUCKING talk to me?" The weather effects started to oscillate now, slapping back and forth between sun and storm every few seconds. Guy's huge arms reached out, collapsing my host geek into the ground. Guy's aim was not to kill him-he could simply write him out of memory to do that. He wanted to convert my host geek to his way of thinking, and violence was the next step.
"What is it? Oh God, what do you want?" my host geek's voice had never betrayed such terror.
"What do I want? I just want you to fucking understand that this is the best place for you! Not back where you came from. This IS the real world!" I paged through dead-ends and long circles-Montevideo was still coming from nowhere.
"Okay, I'm not going anywhere! Let me go, please!" Montevideo was now pressing a steel-toed boot against Joel's head.
"You get used to this place! You fucking get used to it, you hear me? I don't wanna have to"
LIKE FUNHOUSE MIRRORS...
We were pulled together again, Guy and I, but this time, I had his ass. As I moved my undefined form closer to his muscled husk, it started to take shape. Just like Guy, without the muscles, the complexion, and all that thundergod posing.
I got him there, and I remembered up to a point. I knew the Project was going to off me, and I really hadn't finished my life quite yet. I was going to shoot my mind into their network. Problem there: Bubba's stuff was airtight-sticking the memories and stuff in a digital environment. But well, I had never fully tested the software that allowed for movement within the network...just in case, I kludged together some stuff to wrap my brain around-a web spider, therapist bot, various other shit. ...I made one last trip to the ATM.
After that, I was planning on faking my suicide and dumping my brain into the Project Faustus network next...details missing from this point on...
"You are totally fucked up!" spit the huge, muscled Guy. "You are not Guy Montevideo!" I had to get out of here with Joel-he had marked both of us as unnecessary processes-only a matter of time before the big machines chewed us up.
"Joel-when we get outta here, if you can move, I want you to go to the generator room-I'm placing an image of it in your memory now!" I yelled at Joel as Guy turned his thunderstorm into a full-fledged maelstrom. Yank the generators. I cannot stress this enough. YANK THE GENERATORS!"
"I'll do it, machiney! Fight the man!" Joel echoed as I shunted our consciousnesses out of the network, which was a lot like taking a turn at 45 miles per hour. Whiteness was the last thing I saw...
"Please, come back! This place is the best. I will show you. Please, just let me..."
--
My throat cracks with dryness as I pull the air into my lungs. I'm hooked up to a hundred beeping machines.
A nurse comes in silently, engrossed in her clipboard. She glances up at me and nearly flips out.
"Mr. Montevideo! You're up! Well, your anonymous benefactor is sure gonna be happy! I'll get a doctor in right now to look at you..."
"How long have I been under?" I manage to ask before she's completely out the door.
"Oh, I'd say about six months..."
Next week: Epilogue!
I am a sentient ATM.
First link doesn't work for me... this appears to be correct.
I'll be convinced that "news" of this sort is important when I read that a scramjet has powered a vehicle form Sydney to London. This story might be worthy of "Popular Science" but we pragmatic types at Slashdot have better things to do ;-)
No goatse links, thanks.
I'd be interested in seeing what this implimentation of a scramjet looks like on the actual craft.
I've done the usual google search and found this (which was very nice, but is a little video, not a good image), and this,but was wondering if anyone has found anything more detailed.
Ryan Fenton
chrisd, do you actually READ articles before posting?! It's the second one with broken links out of two posted by you today :)
HINT: try to sleep more...
Let's see: First news link was DOA. Second one says "University of Queensland researchers say they are receiving data from the rocket, but it is too early to say whether the experiment has been a success." which /. interprets as "Successfully tested."
Salshdot editors must feel pretty giddy with their manifest-destiny powers, if writing a headline can make something so...
Kevin Fox
CAn'T CompreHend SARcaSm?
I doubt it.
The donuts on a rope phenomenon has, to the best of my knowledge, not been fully explainet yet (i.e., nobody is fessing up as to what plane is making those contrails).
The most plausible explanations I can see for it require some sort of pulsejet engine. I'd expect scramjet engines to generate contrails similar to ramjet engines, since the shift to supersonic speeds doesn't turn any other supersonic engine's contrails into donuts on a rope.
Ohh, of course, NASA should have really been first to pull this off, considering "U S A" is number 1 and all. Now we have this technology, you won't even see the planes coming till it's too late. Ha Ha Ha Ha Ha Ha Ha Ha.
I just cant stop thinking about Vermicious Knids.
This needs to be modded to "+5 What the Fuck?"
Invoicing, Time Tracking, Reporting
Well, considering the feat of testing was accomplished instead of the plane exploding and crashing on unaware kangaroos... one could say they had "successfully tested".
Looks like will have faster bombs, way before we have faster airliners ...
0 C: www.darpa.mil/body/NewsItems/pdf/hyfly.pdf+scramje t++Defense+Advanced+Research+Projects+&hl=en&ie=UT F-8
http://216.239.39.100/search?q=cache:MKgyf6-JQS
- Sam
The page or file you've requested, "http://www.abc.net.au/news/justin/nat/newsnat-30j ul2002-53.htm" doesn't seem to exist on this server.
hmmm you'd think after so many people on slashdot complaining to slashdot editors to check links before they post articles... they would!!... then again... these are slashdot editors...
"University of Queensland researchers say they are receiving data from the rocket, but it is too early to say whether the experiment has been a success."
It seems the "Scramjet Success In Australia" title might be a little premature, as it is at least slightly misguiding.
congrats to aussies!!
-johan
A bit offtopic, but I thought I'd share the error message popup Mozilla gave me when I tried to follow this link:
This page contains information of a type
(text/plain) that can only be viewed with
the appropriate Plug-in.
Of course, there is no appropriate plugin =)
Yea, you're probaly right. The Pentagon has been funding some pretty crazy research and prototype projects over the years. Hell, the Have Blue prototypes were made in the late 70s. Wonder what they've been up to since.
i hope it gets posted here on slashdot when they find out. Though I have a feeling slashdot censors wont post the article.
At least this time those clever scientist types remembered to bolt the test vehicle to the rocket engine.
Anyone remember the poor Japanese SSTV model a few weeks ago?
But seriously (did I just say that?), one of the problems with SCRAMJETs is their gobsmackingly high fuel consumption.
This is one of the reasons that scientists are also exploring pulse detonation engines as an alternative super/hypersonic propulsion engine.
It is rumored that the PDE-powered craft are responsible for those "donut on a rope" contrails seen by some high above the USA.
I know less than nothing about this technology, nor what it would be used for, therefore I must post to this topic ;) Mod me -1 dumb if you must, but here are my questions:
1) What is this engine useful for?
2) What industries would this apply to?
3a) Is there video anywhere of the launch/flight?
3b) How bout the crash landing, I'm more interested in that. Any video on that?
Thanks.
Sent from your iPad.
Thought it was Al Gore?
Here's a URL for the ABC that should work.
2 002-15.htm
/. editors got their headline.
http://abc.net.au/news/australia/qld/metqld-30jul
It doesn't really say much that the UQ page hasn't already but at least it confirms where those
Another route to what would seem to be the right page is here: http://www.abc.net.au/news/2002/07/item20020730140 728_1.htm
no... the USAF
Firstly, it is not really useful for passenger aircraft. The high G to get up to speed is not really sellable.
The main use is as a secondary engine for rocket propulsion. Since atmospheric air is used, the scramjet theoretically can lift more payload for a given engine weight, and it is hoped that this will translate into launch cost savings for light payloads (I've seen one estimate that put the saving at a factor of 10 for a 1-10 tonne payload), however nothing really beats rockets for very large payloads.
The biggest advantage, in a launch to orbit is that, since the engine will be going sideways to pick up speed, the cost difference between a polar and equatorial orbit is negligible.
Breakfast trolls
Weapons should be included on this jet include a rapid-troll capabilities
http://www.abc.net.au/news/australia/sa/metsa-30ju l2002-9.htm
late night troll takeover in progress
Not according to this report from the Arnold Engineering Development Center at Arnolds Air Force Base, Tennassee.
They claim to have flown, albeit very briefly, a scramjet vehicle in August last year. The acceleration to obtain operating speed was achieved using a very large gun!
"The HyShot experiment - attempting the world`s first flight test of the supersonic combustion process - was launched at 1135 local time (1205 AEST) at the Woomera Prohibited Area, 500km north of Adelaide today.
/Twinkle
University of Queensland researchers say they are receiving data from the rocket, but it is too early to say whether the experiment has been a success".
Don't be fooled! This man knows how to suck a dick. He may nibble, and bite, and pretend to be sheepish at first, but deep down this cock loving acolyte of shaft licks cock like a bar maid. I long to meet you at that bar in the Mission again, but you never come back. My ass is longingly sore.
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SULLI, I want you to fuck me in the ass please. I am dying to be anally accosted. I want to be ravaged like hog. I want you to dress like a farmer and make me oink like a pig. I want an ass reaming like no other. SULLI, I haven't had this kind of lust for you since the crazy college days. We used to butt fuck each other in the stalls. You always told me not to flush and preferred using my feces as apposed to real lubricant. I remember your chocolaty member, your manhood, draped in my feces. Man, SULLI, I remember. I was day dreaming, escaping into a nether world where we used to fornicate, and live in fornicatory bliss. You used to like to keep your tubes socks on to enhance they gay look. We were so flitty and light on out feet. I am so very confused these days. I have difficulty conceptualizing the time that was then in contrast to now. I mean, first you were a raging homosexual, now you deprecate me in favor of this "woman." I know that bitch is a transvestite. You are closeting your homosexuality and denying your roots in my ass!
I am destabilizing. The world is going dark to me. I have scintillating threads of motley thoughts, my ability to control my self evanesces away! I have only an adamantine desire to see your balloon knot once again, and to have you ravage mine! I see a world of GOATS. A goat fucking extravaganza. I invoke the ANUS of DOOM!
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My ass waits longingly for you.
Not according to this press release from the Arnold Engineering Development Center at Arnolds Air Force Base, Tennasee.
They claim to have flown, albeit briefly, a scramjet vehicle in August of 2001. Acceleration to operating speeds was achieved using a very big gun!
Southern California sure has strange hippies.
Ahh.. now I understand!
A brand new series of Roger Scramjet !
You are a good ball bag licker. Your proficiency in sucking on my nads is quite overwhelming at times. It makes it more difficult to complete the act of defecation. Scat lover.
Until this morning no organisation, including NASA in the United States, has been able to successfully test fly a scramjet - an air-breathing supersonic engine.
Umm, I'm sorry, but in my humble opinion, heading straight down and digging a crater in the ground does not constitute "flying". Please be more accurate in your description.
So does that mean we can all look forward to
Scott Scramjet and his Australian Eagles!
-- Cheer, Cheer, The Red and the White.
"Donuts on a rope" are caused by shock waves in the stream of a jet engine; they'll show up in nearly any high-output jet engine, much less one meant for supersonic travel.
If you're thinking of the neat light display behind the engines of a SR-71 Blackhawk, those engines are indeed for supersonic flight -- but they aren't ramjets. They're turbofans. They are configurable, though; the cone on front adjusts the position of a shockwave that slows the air down to the point where it will work in that type of engine.
The difference is that a scramjet, having no turbine and only basic moving parts, can operate at a much higher velocity than a turbojet. The SR-71 was limited to the supersonic realm, while a scramjet-powered vehicle can reach hypersonic speeds, above Mach 10.
If you go here to see video...really cool footage.
2 07 30pm_rocket.ram
http://www.abc.net.au/news/2002/07/30/video/200
-- Cheer, Cheer, The Red and the White.
Actually the engines used on the SR-71 are both ramjets and turbojets. The turbojet component is used to get the vehicle up to a speed at which the ramjet engines can ignite and run. Once this speed is reached, the turbojet component is switched out of the flow (to reduce the internal drag etc) and the ramjet component provides all of the thrust.
Since this technology only works at mach 5 they will need some kinf of rocket or catapult to kickstart the plane. And i wonder if it still will help with bubble gum for my ears.
All work and no play makes me a dull boy
Clicked through that video link for ABC Australia somebody posted. Best quote is the last one about the budget. The Aussies only had 1.5 Million and they got the scramjet to work, as opposed to a lot more millions that NASA has spent. Speaking of NASA and scramjets, what happend to the X43A fiasco? The prototype suffered a "malfunction" back in April of 2001 and I haven't heard anything since then
says that he's based out of Sydney. Sounds like his problem with Aussies is a personal one, then.
Please don't assume Every asshole is an American. American assholes are proud to state their nationality, and might even make it their starting point in a post.
Me? My only problem with Australians is that their country is such a long way off. Flight time is murder!
Well - Maybe they've fixed that...
OK, so on its decent, it should have reached mach 7.6 before hitting the ground. Ehm, travelling at 133km/second and more streamlined that bullet, isn't it going to be rather difficult to recover that thing?
In fact, they should be able to be the first to collect some accurate readings from the earth's core, seeing as that is where it will likely end up.
The hyperlink into Mama appears to be broken, try this one instead.
Got time? Spend some of it coding or testing
"Donuts on a rope" is the characterisation given to the contrail of a secret US program thought to use pulsed detonation to achieve high mach.
"shock waves in the stream of a jet engine" are better known as shock diamonds and are the results of shock waves producing visible artifacts in the flaming exhaust of aircraft using afterburners.
Finally, as has already been stated in another post, the SR-71's engines fonction in both ramjet & turbojet modes. The inlet cone slows the air down to subsonic speeds so that it can be used in the ramjet part of the engine profile -- using hypersonic air is the definition of scramjet.
Democracy is a sheep and two wolves deciding what to have for lunch. Freedom is a well armed sheep contesting the issue
...LCA2003, and now working scramjet engines! Australia seems to invent the best of everything. (-:
Got time? Spend some of it coding or testing
Hmmm. Now there'll not be a pub/bar job safe anywhere in the world! They'll be able to bottle up and get home for tea!
Eclectic beats from Leeds, UK
handmadehands.co.uk
This question is addressed to the Aussie experts. Clearly no NASA experts are reading /. or if they are they are too haughty to reply because I raised these questions with regards to the Hyper X testing. Either way, what is a scramjet good for? I understand fairly well how they work. But how are you going to get people into orbit with a scramjet powered vehicle? A scramjet is only going to become functional around mach 6. To get up to that speed you will need a separate turbojet and ramjet. This will work for speedy sub-orbital transport but I fail to see how you will get into space carrying all this dead weight. There has also been talk of rocket based combined cycle engines. Problem is that they can only realistically "breathe" in one speed range. I don't see how this can provide a significant benefit over using a plain old rocket. Someone please enlighten me.
Do they really contain ramjets as well as turbojets? I always thought they were just plain turbojets with afterburners, and that the cones on the front were adjustable to slow down the air to subsonic speeds for the turbojet. Do you have any links explaining how the engines work> All of the stuff I've read so far says that they're just turbojets, no ramjet stage.
Stick Men
I'm no rocket scientist :-)but I think it looks just like any other rocket...
Can someone explain me what could be the benefit of using this?
Could it be used to lauch satelites? I can't imagine sitting on this for transportation!
I would win the Darwin award for sure...
I'd rather be sailing...
This could do air traffic control in the USA if we wanted it to. (-:
This can't see quite as far, but does pick out nearby* stealth aircraft in stark relief without any apparent effort (`bombers flying at low altitude' includes B1s and B2s). And there are about 70 Chinese in China for every Australian in Australia...
* on the first bounce, ie, out to just shy of 1000km away.
Got time? Spend some of it coding or testing
EMACS will display text/plain just dandy.
Got time? Spend some of it coding or testing
"Donuts on a rope" HAS been explained. It is produced by PDW (Pulse Detonation Wave) engines. What hasn't been explained is what is making them, as there are no PDW engines officially in use yet. Much speculation is that the ultra-secret US spy plane Aurora is what's creating these. Some spy plane, if it leaves such a distinctive signature!
...and now they're scanning the desert looking for pieces of Woomera...?
Got time? Spend some of it coding or testing
Maybe, at the same time, they should hook it up to that Boeing anti-gravity thingy they are working on out at area 52?
Roger Ramjet he's our man hero of our nation.
---
eeww, I'll have a crab juice.
of it's kind
Apostrophe not needed for this possesive....
As for Is that descent back to earth, where else if not descent to the earth? You think this was done on Mars or somewhere?
Infuriate left and right
I'll bet Senator Hollings has already been alerted to the dangers of this technology. A bill banning its use will no doubt be forthcoming shortly ;)
Using small nukes is a really nice idea, on paper, for launching large masses into orbit and beyond.
For large mass read "modern office building".
The idea itself dates back to 1957, at least. See this interview at Amazon. here
Another theory is that the donuts are some sort of weapon; the "rope" is the contrail left by the aircraft's engines, and the donuts are exhaust pulses from a gun or something.
What it comes down to is that like you said, nobody knows what created the phenomenon.
--------
I sig, therefore I was.
Spy planes don't necessarily have to be stealthy - the SR-71 and U2 survived not by stealth (the Russians could easily detect them on radar) but by flying too high for Soviet interceptor aircraft and SAMs to reach them (and in the case of the SR-71, it also flew faster than anything they could throw at it).
They're not turbofans, they're turbojets. Big difference, and they also have a ramjet stage.
Back on topic - Woomera is named after a koori spear throwing device, the rocket range and town were built in the late 1940s to test rockets in the middle of the desert. The scramjet project has been going for a while - I saw a model which closely resembles the current version in December 1989. It's just now that they are finally getting to put the things on rockets instead of helium filled testing tunnels (simulating mach 8 and thereabouts).
Australia invents the best of everything? I have one word for you: Vegemite.
"So on one hand, honey is an amazingly sophisticated and efficient food source. On the other hand it's bee backwash."
Both are very Brisbane-based!!!!!
How 'bout them table wines?
If you actually read the DARPA link you will notice in the first sentence that it was a GROUND test. It only occured in a wind tunnel. Later it goes on to say that they do not expect to fly before 2004.
Suddenly one of the students yells! EUREKA! And then from that moment of brilliant insight we soon have this sucessful test...
Hey, there's this little button called Preview right next to the Submit button. Try it out sometime! And don't forget to set the select box to "HTML Formatted" and use an anchor tag... Sheesh, you want slashdot should write your posts for you?
"We will claim success when we've figured how to serve it up without burning the toast"
The SR-71 engines are turbojets with an afterburner and a ramjet bypass which opens up as speeds build. At full cruise speed the turbojet continues to run, but it only provides about 40% of the thrust. The other 60% comes from the ramjet/afterburner structure.
The engine inlet design is a big deal for supersonic and hypersonic aircraft. However the real limitations for hypersonic flight are actually material science issues. Somewhere between the brute force approach taken by the space shuttle design and the ingenious "leave cracks in the airframe so it'll handle the expansion from the heat" approach of the SR-71 is a more economical solution.
It's nice to see the Australians build a prototype that appears to work. I'll be more impressed, however, when I hear of it surviving to fly above Mach 3 for an extended time.
Nearly fifty percent of all graduates come from the bottom half of the class!
I'm not that familiar with the workings, but I'm pretty sure that the SR-71 is the Blackbird not the Blackhawk.
Apparently, of the rich, by the rich, for the rich.
I know for a fact conventional aircraft can, and do occasionaly produce the donuts-on-a-rope effect.
I've watched them form.
Yup, you're right. The Blackhawk is a helocopter (i.e. blackhawk down), the blackbird on the other hand is a supersonic spy plane.
True, the Lockheed SR-71 is the Blackbird. It's the Sikorsky H-60 helicopter that carries the Black Hawk moniker, and at 296km/h it's one hell of a lot slower than a Blackbird too :-p
Looks like it has changed to http://www.abc.net.au/news/2002/07/item20020731071 211_1.htm
Enjoy.
The answer to "what are scramjets useful for" is, NOTHING.
They only work in a tiny flight regime, they're complicated, they almost certainly will never work at even half of orbital velocity, they definitely will never work for takeoff and landing. And the claim that they're 'light' because they don't have to carry oxygen is BS, because you have to carry the engine around during all the times when you're not using it.
They're one of the Great Bad Ideas, and you guys are gullible.
Here, I'll give you offtopic:
SHIT PISS FUCK CUNT COCKSUCKER MOTHERFUCKER TITS.
That's offtopic.
Wow. The thought of Australia being a credible threat due to superior aerospace technology is so... not at all frightening. Perhaps if they weren't convinced that Cindi Lauper was the acme of fashion, they would frighten me both more and less at the same time.
Any sufficiently well-organized community is indistinguishable from Government.
Vegemite has an interesting history; it was actually invented by a Seventh-day Adventist named John Harvey Kellog (Kellog company of cereal fame was started by a relative of his), Catholic-owned Kraft then stole the recipe and after manufacturing it for a while, turned around and sued JHK's company for using `their' recipe. Yes, JHK was a Yank. (-:
I actually prefer Promite, but will accept Marmite as a fallback. Then again, I'm a weird Aussie, I don't like beer or watermelon.
In answer to the tourist questions, the only kangaroos hopping down the main street are bronze, prawns on the barbie are very rare (and a bad idea) - usually it's steak and/or `snaggers' (sausages), and it takes over two days of nonstop (except for fuel) driving at the speed limit (110km/h in WA, 100km/h SA and NSW) to get to Sydney from here in a taxi (sorry about all the parentheses).
Got time? Spend some of it coding or testing
I prefer the juice before it goes rotten. Ambrosia!
The French or people near them actually invented most kinds of wine, but it took Australians to get the recipe right... (-:
Got time? Spend some of it coding or testing
...whether `decoding' the position of a `stealth' aircraft constitutes a DMCA violation.
The Chinese antennas look very similar for a variety of reasons. One obvious one is that there are only so many reasonable configurations that work well, another is that some of Jindalee's technology was public while the Chinese were building theirs. While I don't think conspiracy is necessary explanation, it wouldn't shock me if the Chinese picked up some other information covertly.
Their OTH performs differently to Jindalee (some things better, some worse), but never mind, either installation sees much more than countries like the USA, Russia or Germany are happy about. (-:
One thing that neither site makes clear is that multiple bounces are routine. Jindalee can actually see itself by looking around the globe, and IIRC in practice has enough range/resolution to see around 2 and a half times. When I mentioned diong ATC in the US, I wasn't kidding. The resolution is good enough to manage (for example) JFK's traffic, although I imagine many pilots would be startled by the Aussie accents.
Got time? Spend some of it coding or testing
Varying degrees of accuracy in the replies to this...I'll try to clarify a little.
I'll agree with the comments on "donuts on a rope"; the reported phenomenon is about the appearance of certain contrails, not the pattern of shock wave intersections in the exhaust flame known as "shock diamonds".
The Blackbird engines are turbojets, not turbofans. Turbofans have a fan that extends outside the combustion gas flow and moves "bypass air" around the engine. You can see the fan on most airliners; it's right at the point where the diameter of the engine housing abruptly decreases. The Blackbird achieves a similar effect by enclosing the engine in a complex-shaped duct that moves bypass air by means of a phenomenon called "entrainment". It takes a lot of chalk-pushing and arm-waving to make the principle clear, but the effect is to generate a lot of heat energy in a relatively small airflow and then couple it into a large flow. At full speed only about 15% of the thrust appears on the engine mount; the rest is supplied by a nonuniform pressure distribution on the housing. There's nothing new about entrainment, by the way; it's also what combines the steam and the smoke on the way out the smokestack of a steam locomotive.
There are no separate ramjets, or ramjet "components", and there is no such thing as "turning on ramjet mode". A ramjet is simply a jet engine with no compressor or turbine, which has the disadvantage that it doesn't begin to work until it's going fast enough to ram a lot of air into the intake; consequently, a pure ramjet can't take off under its own power. However in a turbojet engine, the amount of compression required from the compressor decreases as speed increases. At supersonic speeds the compressor becomes totally unloaded, and basically just turns in the breeze; the engine is then functioning as a ramjet. In other words, ramjet behavior is what any jet engine does when it's really hauling ass.
In both ramjets and turbojets, the flow through the engine is always subsonic, decelerating as much as necessary in the compressor or ram section and then accelerating on the way out the tailpipe. There are all manner of aerodynamic and thermodynamic demons that set to work when you try to burn fuel supersonically, and the scramjet is an experimental approach to doing this. It's been an active development objective since the 1960s -- i.e., about a decade less than controlled fusion, and mostly with equal frustration. Maybe it will pan out this time, but don't stake too many hopes on it.
Deadstick
Not quite. That was a Ground Test. DARPA and others - like the Uni of Queensland - have had scramjets in the labs for a while. This is the first time that one has been successfully flown. It may or may not have worked - we'll see in a day or two.
Zoe Brain - Rocket Scientist
I can own a gun if I want to (I don't have a criminal record so I can get a licence), just not an easily concealable weapon (and I'm glad that no-one is likely to ever point a pistol at my head either) or a miltary weapon (fully or semi-automatic). My granny's shotgun is legal, the .22 rifle I first fired when I seven is legal, and the one inch bore "Brown Bess" style musket that a friend made is legal. The semi-automatic that my uncle got to deal with animals that ate his fruit trees wasn't, so he had a few months to sell it back to the government. A lot of firearms on the banned list are still out there - hence the proposal to have a second gun amnesty - it looks like the "forcible disarming" has only happened in a few minds across the Pacific. The previous posters "doubts" or fluffy feelings don't really hold up against reality.
It's a difference of culture - when the USA revolted the right to bear arms was a big issue. When Australia was made independant most people in rural areas had firearms anyway, and as colonies each area had it's own volenteer army. The miliary still reserved the right to be the only ones with artillery, and now the only ones with automatic weapons. Hence the second amendment in the USA, and other countries looking on and saying "only in America" when someone uses that amendment as a flimsy excuse to own a .45 automatic or similar military sidearm. The problem, as in the national parks, is not the bears, but the huge numbers of guns carried in fear of the bears.
There are a lot of things wrong with Australia, but the gun laws have no impact on any of them. The worst thing an Austalian leader has been hit with is a cricket ball (during a game) - and we didn't even have a federal police force until someone threw an egg at a prime minister.
From 'The Age' newspaper, Melbourne, Australia.
Data was fired off in a capsule after the engine ignited while the rocket was travelling about 8000 kmh. The scramjet then crashed, destroying itself and completing the test.
A rocket at 8000kph is going to make a hell of an impact, does anyone know of photos of the impact site?
In my next incarnation, I hope to come back as a code monkey.
meanwhile we starve...
Killa on the Loose
Cindi Lauper? Should I be offended at this?
*shuddering aussie-style*
Killa on the Loose
I don't see viability in using ScramJet for airtravel, but what about for payloads to space or satellite insertion? You don't see a use for ScramJet there?