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Pulse Wave Detonation Engine

01/05/2008 11:42 PM

I have heard of this thory (I guess) and when I look it up it is tied in with the "Aurora" spy plane. Which, would give it a supposed speed of mach 6 or so. Also, I have seen a photo of a contrail which is deemed "donuts on a string" that is allegedly tied in with this type of propulsion. What is your guys' take on this? CR3, Sparky, all of you guys that are in the "know" what say you on this topic? Also, there is a pic from a weather satellite that shows a contrail (again the donuts on a string) starting from Nevada and crossing onto the atlantic...

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#1

Re: Pulse Wave Detonation Engine

01/07/2008 3:07 AM

http://en.wikipedia.org/wiki/Aurora_aircraft

Provides some links to the likelyhood of a functioning pulse wave engine. Has a strange ring of truth to it, sort of like all skunk work projects, but still makes you go "Humm?"

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#2

Re: Pulse Wave Detonation Engine

01/07/2008 11:39 AM

Donuts on a string sure soulds like a pulse jet engine, a la the V-1 (A-2) from 1943-45 era. But one would suspect that the "donuts" would be so close together as to form a continuous vapor stream. Possibly a continuous laser (or nuclear) source that belches a smoke ring every so often? The SR-71 Blackbird essentially ran full-time on afterburners during a mission. I always think of the faces of the Russian generals and politicos, sitting around a table, when the Russian Air Force surface-to-air missile commander told them that the "spy plane" just pulled away from any missiles meant to shoot it down. Sort of like the same people, sitting around and watching film of the U. S. armor picking off the Russian - Iraqi armor by the score during the Iraqi war, thinking: Boy! Am I glad we didn't go to war with these guys! Sort of a tragic-comedy moment.

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#3
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Re: Pulse Wave Detonation Engine

01/07/2008 11:45 AM

They have pics of "suspected" Aurora trails (read as donuts on a string). Yeah, I can just imagine the look on these guys' faces when they found out that a missle couldn't even come close to a "simple" spy plane. or or or ?

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#4

Re: Pulse Wave Detonation Engine

01/07/2008 2:33 PM

The donuts on a rope image comes about when a pulse wave detonation engine is "idling" (at reduced throttle settings). The V2 got its "buzz bomb" name from the fact that it flew at maximum throttle efficiency (but with minimal wings, thus very heavy wing loading=very little lift, needs fairly high velocity to stay airborne, which in turn supported minimal transit time to target, and made it harder to shoot down), with the result that instead of roaring, it buzzed. The buzz was the sound of rapidly repeating individual detonations.

The way the engine works, in a nutshell, is that the gases expanding inside the ram tube cause a burst of pressurized exhaust gas, expanding to push the tube (and vehicle) forward. The resulting drop in internal pressure is rapid enough to push the tube into a slight internal vacuum condition, resulting in a "gulp" of inrush air, which mixes with metered (the throttle setting) fuel, which is spark ignited, starting another burst of pressurized gas out of the nozzle. The effect is like a rapid series of giant belches, thus the donuts on a rope.

In the V2, which compared to the speeds that we are achieving today, is slow, the thrust is produced inside a metal tube, or tubes. With the Aurora project, the fire MAY be produced, as extreme MACH numbers (6+?, 10+?. I don't know) in a virtual ram tube created by the hardening of the air over the lifting body upper surfaces by its passage through still or slow moving (relative to the Aurora, anyway) air. At very high compressibility, the air flow over the body becomes so solid it mimics a metallic or other hard structure, and can contain the flow of pressurized gases, and direct them, just like it would in the standard jet tube. But where at high MACH numbers the metallic jet tube would melt down, the air does not. Which, in the long run, may be the only way we can achieve numbers into the MACH 25+ range.

I don't know whether Aurora uses the external "hard air" RAM effect or not, but I have seen (leaned against, while talking to the US Navy Captain in charge of the testing, at his retirement) a 1/3 scale test bed, which had recently flown at about MACH 5 (the actual numbers were, and as far as I know, still are, classified, so about is the best I can give you. That was reported in the US press, though I don't remember which paper it was is. Probably the Washington Post, since I am just outside Washington, DC.

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#5
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Re: Pulse Wave Detonation Engine

01/07/2008 2:38 PM

Cool! Thanks for the info... It seems to me that if the Germans had maybe had another year to fight and also develop new weapons that there could quite possibly have been a different outcome to WWII (providing, of cours that they would have had the resources like fuel and metals to build with).

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#6
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Re: Pulse Wave Detonation Engine

01/07/2008 3:53 PM

They did. They were made to change camps. Lest we forget. Ky.

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#7
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Re: Pulse Wave Detonation Engine

01/07/2008 4:01 PM

Made to change camps... like they had no say in the matter? I though some of the guys defected so that way Hitler wouldn't be able to go crazier with their inventions... Or WMD's? or whatever they could be called....

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#9
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Re: Pulse Wave Detonation Engine

01/07/2008 4:11 PM

Some, probably. Probably more, though, because they could stay out of the Nurenberg War Trials that way. You know, go to work for the good guys, so the good guys won't shoot you.

Oh, wait, that's just like not having any choice, huh?

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#8
In reply to #5

Re: Pulse Wave Detonation Engine

01/07/2008 4:09 PM

That was the fear. That, their great scientists, their ongoing efforts to build a heavy water reactor vessel (to build a bomb with, what else?) and their total lack of moral scruples when it came to killing anyone or anything that even became inconvenient to them (I'm talking here about the Nazis, obviously, but as an American of German descent, whose father was a US WWII vet, and many of my relatives still speak little english, I'd have to point out that even many of those who served the Third Reich were not Nazi party members. They were staying alive. No excuse for lack of scruples, but still understandable) the thought of Germany winning WWII under Hitler's continued leadership STILL scares me.

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#10
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Re: Pulse Wave Detonation Engine

01/07/2008 4:48 PM

My wifes grandfather was in WWII and saw Musilini get hanged. He experienced a lot but the one thing that he has always told me (why he felt sorry for having to fight them - read shoot at, kill, injure whatever) is that he felt SO Sorry for a lot of the German soldiers. Not the SS or the Gestapo types, just the everyday soldiers. It seems that if they might have had any thought of not fighting the Gestapo or whoever would threaten their families. You know like, " fight or else we rape and kill your lovely wife and/or daughter(s).

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#12
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Re: Pulse Wave Detonation Engine

01/07/2008 5:14 PM

Die Gedanken sind Frei, wer mag sie erraten.

Thoughts are free and no one can guess them. Such is the way inventions are made and picked up by the "Big Boys" to be used at will for the detriment of us all. The Greeks invented democracy and see were that has placed us. Sometimes in a Greek Tavern. At best.

V 2 have our taverns and are brooding and brooding...........

Hope all stays well. Ky.

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#13
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Re: Pulse Wave Detonation Engine

01/07/2008 5:24 PM

"V 2 have our taverns and are brooding and brooding..........."

I think I really like your sense of humor...

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#21
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Re: Pulse Wave Detonation Engine

01/08/2008 4:28 AM

Me? Humour?

Australian heart pumping German blood. Now that you mention it.

V2 thought that V1.

No body has ever won a war. Not even the war against ailments. In the end V1 was before V2.

I repaired a pressure tank one day for a pommy friend of mine. It was only to last for a few days. In the end I gave it a paint job and put an emblem on it: "V3". It did look like the real thing.

He was not a happy camper and had it installed the other way around. If only for a few days. Weeks later when the "V3" was replaced we did have a laugh. Including the ones giving us a hand. They were the ones that were to fix it in the first place, so the message got there late. A German fixing a pommies stuff up. Unheard of.

Here comes the flak.

Better get to work. Have more of what you wish you could have. Ky.

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#22
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Re: Pulse Wave Detonation Engine

01/08/2008 8:20 AM

"No body has ever won a war."

Concur. Many have not lost wars, but even then, they are not winners. Just ask this chap...:

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#24
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Re: Pulse Wave Detonation Engine

01/08/2008 9:47 AM

Hi Ky,

The V3 did exist, it was a HUGE cannon, sunk into a hillside.

http://en.wikipedia.org/wiki/V-3_cannon

I have seen pictures of the area after it was destroyed a by massive bombing campaign, the area looked like a moonscape, no vegetation at all, just craters upon craters, and, a river winding through it all.

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#25
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Re: The V3 - "Big Bertha"

01/09/2008 6:38 AM

Yes, Zaphod2Headed

It was nick-named "Big Bertha", fired a shell weighing about a ton, right across the English Channel, and much further.

There is an interesting article about the V3 right here: http://www.dooyoo.co.uk/destinations-international/la-forteresse-de-mimoyecques/1042840/

The main problem was the rifling did not survive many firings, and re-barrelling was a slow and expensive exercise.

Kind Regards....

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#26
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Re: The V3 - "Big Bertha"

01/09/2008 9:21 AM

Hi Sparkstation,

Good link! I tried to find some wartime pictures of the area after the bombing raids, but came up empty; its possible I saw them in a book, rather than on the web.

(Does anybody remember a time before the web????)

IPG

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#28
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Re: The V3 - "Big Bertha"

01/09/2008 10:21 AM

Vaguely...

I have a 4-vol. set of A Pictorial History of WWII, it's packed away, but if I can dig it out in the near future, I'll see what I can find for you. In the meanwhile, here's a "big barrel" to tide you over...

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#14
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Re: Pulse Wave Detonation Engine

01/07/2008 7:34 PM

I, too, heard that. My father spoke fluent German, and, as a Mennonite, was a conscientious objector. Back then, that meant you went to war, but served in places where you didn't care a projectile weapon (a gun) and served in support work. During one of his assignments, he was a POW guard and watcher, and heard them talking about it, sometimes about how they were now free from the threat to themselves, and others, for those that had family back in Germany, the fear of what might be done to their families, since they were no longer "on the street" to provide a little push-back against what the worst elements might do to their families.

No one ever said war was good, or right, or anything except sad, and dirty and brutal, and inhuman. On the other hand, I understand, both from my father, and as an ex-sailor myself, along with a war historian, that when push comes to shove, we often are not given any other acceptable choice. Not to get political, but I DO notice that since our response after 9-11, no one has tried to bring war to us on any appreciable scale since. And since I live only a few miles from the Pentagon, work for the DOD, and worked at the Pentagon often, having lost a few acquaintances (not close friends, though) I have to appreciate the deterrent fact implicit in a demonstrated willingness to take it right back to them, in much worse force than they themselves even could have mustered to start.

I was always struck by the Palestinian Command's response to the ferocity with which Israel retaliated after the Palestinians shot the two Israeli guards. And what was it they said? We never expected them to take it THIS seriously.

Stupid miscalculation in the face of a demonstrated willingness. And Israel still doesn't dare trust in peace, but they certainly live more peacefully than if the had tried peace negotiations.

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#18
In reply to #14

Re: Pulse Wave Detonation Engine

01/07/2008 8:54 PM

Yes, I understand the idea of the implicit threat. It is like the view of Jeet Kune Do (Bruce Lee's amalgamation of different arts), which basically states that if you slap me I am going to kick your A$5. If you try and beat me, then I am going to kill you. Plain and simple. Everybody can say what they want about the country, just there is the case of a few thousand nuclear warheads that I am sure are a big enough deterrent for most "sane" hostile nations to think twice about doing anything to crazy. Like dirty bombs and the like....

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#30
In reply to #10

Re: Pulse Wave Detonation Engine

01/10/2008 11:07 AM

Benito Mussolini was shot by a sadist, as was his mistress who was traveling with him and the bodies were hung up by the heels in a Petrol Station. Exactly what Benito had been doing to his political opponents up to that time!

The sadist (I have forgotten the name), even publicized the full details at the time!!!! Even Winston was shocked....

Many believed that he was hanged and many books portray it wrongly.

Winston Churchill, History of the 2nd World War Volume 6 tells it as I have written above......there cannot be much doubt I feel as to the exact circumstances.

If anyone wants the exact page number and chapter, let me know and I will publish it here....

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#35
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Re: Pulse Wave Detonation Engine

01/10/2008 4:00 PM

Well, as I heard the story, they were beaten to death by a mob and strung up by the heels, but either way, he was dead first... Much as I would like to follow the "thou shalt not kill" Commandment, there will always, I fear be some who insist on being on my better dead list. Inconsiderate bastards that they are!

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#29
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Re: Pulse Wave Detonation Engine

01/10/2008 10:58 AM

Sorry, wrong.

Believe me, the result would have been an Atom Bomb (or two) on Berlin before the end of '45!! None of the leaders of the Allies wanted to allow Germany to kill anymore Allied soldiers than they already had!!! Germany saved itself from Atomic extinction by collapsing when it did!!!

I am just finishing the last of the 6 books of the World War II by Winston S.Churchill, for example the bombing of Dresden in January and February '45 has been called "Overkill" by Germany, British and American critics.....but the reverse of the coin is to ask first "What would Hitler have done if the position had been reversed?" Of course he would have bombed us if he could have....

Secondly, Dresden was the communication center for the eastern front at that time, an important military target.....most Germans supported Hitler, although Historians say they "had to!" No, they really thought he would win, at least until early '44!!!!

Thirdly, there were still many Allied soldiers killed between this time and the end of the war, over 10,000 in fact (from memory), how many more would have been killed if the bombing had NOT been carried out? Many, many more!!! How much longer would the war gone on?? no idea.

Hitler and his cronies would never have given up if the Allies had not gone as far as they did with Bombing etc.. It sped up the end of the war.

If the ball had been on the other foot, Winston would have given up rather than see his people killed for no reason at all I feel, he would not have carried on till only a bunker was still left as his country as Hitler did.....though this is all conjecture from me as that did not happen......

Reading these books has given me an incredible insight into the way the great man thought an acted.......he used soldiers sparingly as possible, but the USA & the UK, Canada, Australia, India etc., lost nearly 1 million men between the D-Day Landings and the end of the war!!!! That is not even counting the Russians lost during that time!!!

The Atom bomb would have been used, no other possibilities would have happened and the Germans were far away from their own A-bomb......if they had had it, Hitler would have used it as soon as possible, thank God he did not!!!

All in all, it was not only good for us, but also good for "most" of Germany!!!

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#34
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Re: Pulse Wave Detonation Engine

01/10/2008 3:55 PM

"...ask first "What would Hitler have done if the position had been reversed?" Of course he would have bombed us if he could have..."

Wasn't the Blitz Hitler's way of demonstrating that he could bomb England? That's how OUR history books describe it anyway... Of course by the time of Dresden, the Allies had pretty well put the kibosh on any more of that nonsense!

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#36
In reply to #29

Re: Pulse Wave Detonation Engine

01/11/2008 12:04 AM

Sorry, but I think I left something out of my #5 post... I was trying to say that it would have been different if the scientists hadn't left (or been take - whether by force or voluntary) the country would not have had to worry about that. Or would it? Wasn't it the German scientist that were designing and wanting to develop this weapon of mass fun... er uh destruction.

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#38
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Re: Pulse Wave Detonation Engine

01/11/2008 12:34 PM

"...now that I'm going to be a foreman..."

A promotion?!? Woo-hoo for you! Where's/when's the promo party? I'll chill a few of these...

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#39
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Re: Pulse Wave Detonation Engine

01/12/2008 2:48 PM

Yet is is always fun to speculate on "what if?" The Me-242 was flying in '42, but Hitler insisted on more Me-109's. They had a "stealth" fighter too, but never used it. Hitler wasted his navy one ship at a time, if the Bismarck, Graf Spee, Scharnhorst, etc., had all gone out as a battle group, Germany might have been able to break into the Atlantic.

What if Hitler had died in the plane crash or he had been assassinated? Would they have built strategic bombers, jets, air-to-air missiles and dominated the air? Would they have built a missile big enough to hit New York, or bombers with enough range, or used an aircraft carrier [which was rumored to have been hidden the whole war]?


I would like to play a game based on these possibilities, if there is one.

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#40
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Re: Pulse Wave Detonation Engine

01/13/2008 7:35 AM

Without Hitler, I personally feel that the 2nd WW would have been much shorter, but who really knows!!!

To answer your sentence:- "....used an aircraft carrier [which was rumored to have been hidden the whole war]?"

It was never completed, the rest of the story can be read here on this link, just click to activate:-

German_aircraft_carrier_Graf_Zeppelin

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#41
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Re: Pulse Wave Detonation Engine

01/14/2008 10:42 AM

"Without Hitler, I personally feel that the 2nd WW would have been much shorter..."

I suspect that without Hitler, WWII would not have occurred at all. Or, if you mean with him to start, but then he died, then, yes, likely much shorter. But if he'd been (saner, may not be right, not certain he was insane, certainly unreasonable though) more competent, or let the Generals and Admirals run the war, it would likely have been not only shorter, but have had a far different outcome.

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#42
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Re: Pulse Wave Detonation Engine

01/14/2008 1:58 PM

I have a strong feeling that you would have been correct in your assumption. He interfered so much that it was pathetic, he never ever learned the job!

Read the book written by Heinz Guderian, its probably out of print, it can be found in either German or English, its called "the Panzer General" if I remember correctly....a damn good read.....

A German fighter Ace of the second World war was asked what he needed to win by Hitler, he answered that he needed several Squadrons of Spitfires.....Hitler was not amused.....that was also an Adolf, Adolf Galland. His book is also well worth reading.

If Japan had not been so stupid, by pushing the USA into the war prematurely, the outcome might have been quite different too......

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#43
In reply to #42

Re: Pulse Wave Detonation Engine

01/14/2008 4:20 PM

Which is one of the reasons I am glad unto tears that so many of our political leaders are (or at least know how to act like) dyed in the wool idiots. If Tojo and Hitler had actually HAD good sense, we'd have been in the soup for sure. I hope the historical perspective of our current crop shows us how much worse things woud've been were they a tad smarter. I'm pretty sure things would be BETTER if any of 'em were a whole lot smarter, but that's asking too much, isn't it?!?

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#44
In reply to #43

Re: Pulse Wave Detonation Engine

01/15/2008 12:41 AM

Hey you guys are talking about aircraft carriers and all... What do you think of the fact that on Dec. 7th 1941, the aircraft carriers of the pacific fleet were out of Pearl Harbor. That they did not have any sort of support with them (isn't that the norm?, keeping your carriers surrounded by their support groups?)? Wasn't All of the rest of the Pacific Fleet docked there in the harbor, hung out to dry? Wasn't Hitler going crazy form syphillis or something like that?

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#45
In reply to #44

Re: Pulse Wave Detonation Engine

01/15/2008 12:50 AM

Or, what about the Japanese trying to develop a "deathray?" It ended up becoming some sort of micro wave emmiter or something like that...

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#46
In reply to #45

Re: Pulse Wave Detonation Engine

01/15/2008 2:13 AM

The Death Ray developed a few years ago by the US Army looks like this:-

US Army Death Ray

It seems to work well, I hope that is getting deployed.

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#49
In reply to #46

Re: Pulse Wave Detonation Engine

01/15/2008 10:33 AM

Bad link - no cookie! Or anyway "service unavailable" - was that a secret military website?

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#54
In reply to #49

Re: Pulse Wave Detonation Engine

01/15/2008 7:42 PM

It still works for me, but try this:-

http://www.youtube.com/watch?v=nVxZ9IHTH2E&feature=related

or this, its the same film with a different URL

http://www.youtube.com/watch?v=nVxZ9IHTH2E

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#58
In reply to #54

Re: Pulse Wave Detonation Engine

01/16/2008 7:17 AM

WAY cool - thanks! Wonder what else it works against - like armor? Aircraft?

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#60
In reply to #58

Re: Pulse Wave Detonation Engine

01/16/2008 8:33 AM

I am sure that the military will not tell us all, but I am sure that being in a tank that suddenly jumps 100°C in inside temp will not be much fun either!!

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#48
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Re: Pulse Wave Detonation Engine

01/15/2008 10:32 AM

Don't recall hearing that one - a microwave emitter would have been radar, and the Allies already had that...

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#50
In reply to #48

Re: Pulse Wave Detonation Engine

01/15/2008 11:03 AM

I don't think any of ours were functional until much later than that. I think England was ahead of the rest of us, and theirs was flaky and land bound until fairly well into the Battle of Britain, which wasn't over till not long before the Normandy landings.

Remember, that was a fast-paced war, as modern wars go today. It started (for Britain) in 39, and ended (for us and the Japanese, last two out of the pond) in 45. Only 6 years in which we started out flying late WWI aircraft that were outclassed by everything the Axis had, and we wound up with the best stuff flying (the ME-262 was a jet, sure, but so fast, and so unmaneuverable, in what fighter pilots call a "knife fight" environment, all guns, no missles, that it really wasn't much of a danger yet. Too fast for its day, and now it would be a sitting duck!).

So, the available radar in the beginning was no use as a "death ray", and really, since it had an awesome problem with RF "screen lint" all the way through WWII, not VERY useful as a bogey finder, either! And land bound due to its size, to boot. But by the end of the war, it was carried in select aircraft, more reliable (still likely to be Out To Lunch on a mission, though it started missions in running condition. Vacuum tubes really stink in shaky, violently maneuvering environments).


My point here is just that no one statement about who had what really fills the bill even for a "short" war of only 6 years. Tech has a way of really smoking in development once war starts. But no one had anything like a really promising (or even really suggesting!) death ray, even by the end of WWII. Tojo and Hitler were both smoking dope, if they thought so.

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#51
In reply to #50

Re: Pulse Wave Detonation Engine

01/15/2008 1:35 PM

"Tojo and Hitler were both smoking dope, if they thought so." ROFLMAO!!!

Visualizing that pair sharing a doss in a 30's-era Hong Kong opium den!

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#52
In reply to #51

Re: Pulse Wave Detonation Engine

01/15/2008 1:55 PM

Got to find humor where you can, no?

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#53
In reply to #52

Re: Pulse Wave Detonation Engine

01/15/2008 3:10 PM

Oh, my, YES! Anything so serious you can't find something to laugh at in it, is serious indeed!

The USMC has a saying: "Death smiles at everyone. A Marine smiles back."

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#55
In reply to #50

Re: Pulse Wave Detonation Engine

01/15/2008 8:00 PM

You have some errors in your post, the UKs war started in 39 and ended in the Pacific in 45, you should read a good WWII book or two. You forgot to mention China who was a belligerent on the side of the Allies as well!!!!

The UK fought in the far east before the USA and with the USA till the end....start reading!!! Lord Mountbatten was the CINC of the war out in the far east for the UK.....

Until early 1945 the UK and its dominions had more men in the field and on ships etc., than the US did.

Radar was on ships BEFORE it was on aircraft!!! Well before Normandy!!! 1942 saw many ships fitted. When the first one was fitted I cannot say, but before 42!!

I have never read in any of the books about radar in WWII about screen lint, maybe it was not a problem for the UK versions?

The UK also invented the first real computers to decode the Enigma messages that Germany used.....Colossus....

The following quote is from Wikipedia, use the following link to read the original text:-

http://en.wikipedia.org/wiki/First_computer#Advanced_analog_computers

Colossus was the first totally electronic computing device. The Colossus used a large number of valves (vacuum tubes). It had paper-tape input and was capable of being configured to perform a variety of boolean logical operations on its data, but it was not Turing-complete. Nine Mk II Colossi were built (The Mk I was converted to a Mk II making ten machines in total). Details of their existence, design, and use were kept secret well into the 1970s. Winston Churchill personally issued an order for their destruction into pieces no larger than a man's hand. Due to this secrecy the Colossi were not included in many histories of computing. A reconstructed copy of one of the Colossus machines is now on display at Bletchley Park.

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#59
In reply to #55

Re: Pulse Wave Detonation Engine

01/16/2008 7:25 AM

I think some of the confusion comes from many people having heard of the Chain Home stations. That all started (as I recall the story) with radio freq. tones beamed out and recievers on bombers picking up the signal. If the aircraft wandered off the proper course, the signal faded (up one side, down the other) and the pilot could correct course.

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#61
In reply to #59

Re: Pulse Wave Detonation Engine

01/16/2008 8:42 AM

Germany invented the "Knickebein" (Bent Leg) system, that allowed a bomber to travel along one radio beam, until he crossed another, which meant he had to drop his bombs.

Germany's bombing precision was many times better than the British until quite late in the war. It was recorded several times that British air crews bombed the UK under the false impression of being over Germany!!!

Devices like "Gee" and "H2S" helped British Bombing eventually.....

Here is a link describing Radar & Knickebein better than I can:-

WWII Radar and other Navigational Aids

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#63
In reply to #59

Re: Pulse Wave Detonation Engine

01/16/2008 11:26 AM

What you are referring to was directional guidance for bombers, using two different radio beacons.

See this

http://en.wikipedia.org/wiki/Oboe_%28navigation%29

Ground based radar was also widely used before and during the battle of Britain, see here.

http://en.wikipedia.org/wiki/Chain_Home

It is only because of the warnings of incoming aircraft given by radar that allowed the British to have their planes on station in the air every time the Germans arrived.

For some reason, the Germans only ever attacked these installations once. Had they kept pounding them, the British would have lost their early warning system. They had neither the pilots or the resources to keep planes in the air continually, so without the radar stations, the Battle of Britain might easily have been lost....

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#56
In reply to #48

Re: Pulse Wave Detonation Engine

01/15/2008 11:44 PM

Well, yes it sounds like a radar but the premise for it being built was to be a "death ray." I saw this on, mmmmm (sounds of gears grinding....) I think the history channel. Something like the craziest inventions of WWII that did not get built. They had some other inventions that were thought up, like a plane that would have v/tol capabilities but looked similar to a helicopter, etc. . The comment about this ferocious beam of death is that it would not work on people unless they would sit still for something like a minute... Real world genious there. How about this one...? In '86 or so I was taking a recording theory (for studio recording) class and my instructor was telling us about resonant frequency. The discussion turned to how this could be used for crowd control and that if you were to emit a freq that was low enough (something like what an elephant can do) it would loosen up anyones sphincter and they would crap themselves. Cool, huh? Crowd control by making them sh!# their pants!

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#57
In reply to #56

Re: Pulse Wave Detonation Engine

01/16/2008 7:10 AM

LOL! Well, I guess if it came to a choice of "they shot me, or I shat myself" it's better to not be shot. Probably as effective as tear gas too - you'd still need gas masks on the shooting side though!

Now, was he speaking theoretically, or from knowledge/experience? Has this actually been tried...

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#65
In reply to #57

Re: Pulse Wave Detonation Engine

01/18/2008 12:30 AM

I would have to say that he was talking about a test of some sort that was conducted by a sadist...

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#66
In reply to #65

Re: Pulse Wave Detonation Engine

01/18/2008 3:42 PM

Let us define our terms. Here's how I understand it:

A masochist is someone who says "Hurt me, please hurt me."

A sadist is someone who replies "No."

But now, I might be mistaken...

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#67
In reply to #66

Re: Pulse Wave Detonation Engine

01/19/2008 6:21 PM

No.

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#62
In reply to #56

Re: Pulse Wave Detonation Engine

01/16/2008 11:16 AM

Mythbusters tried this, and just could not make it work (The 'Brown Note' I believe it was called).

A chicken Vindaloo has always been far more effective at this in my personal experience

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#64
In reply to #62

Re: Pulse Wave Detonation Engine

01/16/2008 1:08 PM

Bad chicken! Bad...no biscuit for YOU!

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#47
In reply to #44

Re: Pulse Wave Detonation Engine

01/15/2008 10:30 AM

What I think is that:

a) dang good deal that all the carriers were out on maneuvers, they saved our bacon later,

b) carrier support groups would be de riguer on all ops today, but may not have been then, and

c) the rest of the fleet was docked and dried, but not necessarily hung out - depends on whether you believe the conspiracy theories or not, and which ones appeal to you. Me, I don't.

As for Hitler, he may or not have had a venereal disease, but there's some evidence he suffered from Parkinson's or something like it. Crazy is as crazy does - he was at least power-mad...

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#68
In reply to #43

Re: Pulse Wave Detonation Engine

05/15/2008 8:20 AM

"Smarter" does not mean (nor even imply!) "wiser". I think little of any politician (with the exception of President Ronald Reagan, whom I admire immensely!) who has appeared in my lifetime (for voting purposes, in the US, since 1972!) nor any of those I know of since I was born in 1954, because of a distinct lack of wisdom AND guts AND the demonstrated moral courage AND self-control, to do what had to be done, but not more (Again, exception, President Ronald Reagan, who had, and demonstrated, all of these.)

I suspect that if we only had "smarter" Presidential candidates in America, we'd have a lot more of "Hello, I'm from the Government, and I'm here to HELP you", which is the singular most fearsome sentence I know of (And I WORK for the US Government, God forgive me!). I would be MUCH happier if our leadership took seriously the first tenet of the Hippocratic Oath, which I read as "First, Do NO Harm", and applied that to the question "should the government involve itself in this"? That question would lead to the only job I know of where I would be happy to pay the US Senate, US House Of Representatives, the US President, US Cabinet Secretaries, etc., a higher personal salary, to do less.

But they, Ingrates that they are, insist on doing more for what we pay them. The problem is, they are continually doing more of what we patently DO NOT WANT THEM TO DO, and less of what we patently NEED THEM TO DO.

And there is the demonstrated lack of WISDOM! Smarter doesnt' seem to enter into it!

Micah

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#69
In reply to #68

Re: Pulse Wave Detonation Engine

05/16/2008 1:15 AM

Hey Michad the big thing about politicians in this century, and last, is that they are CAREER minded people. No More, No Less. Being in office is not supposed to be a lifelong thing, or commitment, you really are not supposed to make millions after you leave office when you get to go out on the circuit talking at universities and wherever anyone wants to listen to their blather. Why do we, as a nation, continue to pay for their continued protection by the secret service (which is a life time thing ending with Clinton [I think , cannnnnn't remember.... oh well not important anyways]!!!) It is all about what big business wants. Big business wants the United States of America to pay their workers less so that the profit margin can go WAY up? Let's come up with a lil' something called nafta, oh and we will also start sending more and more of our jobs overseas (where of course we don't pay a hundred workers in a month what an employee might make in a day here in the states.

Revolution Calling ?????? I do not think so. I hope not. I pray not. But in my blogs on my myspace I usually end my political comments with the saying that I WANT MY COUNTRY BACK. Not much but it speaks a lot when you see more and more people here in Sandy Eggo with stickers like this on the back of their vehicle. Maybe they just want to listen to the country station , after all there is only 2 forms of music right country and western (hahahahahahahahaaaa, chuckle )

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#32
In reply to #5

Re: Pulse Wave Detonation Engine

01/10/2008 11:20 AM

Hi Ferris,

Both sides had the opportunity to deal a killer blow much earlier in the war, and both sides missed their opportunity.

For the Germans, all they had to do was bomb one small factory on the south coast of England, only they did not know it.

Most people are not aware of how all pervasive the Rolls Royce Merlin engine was, used in Spitfires, Hurricane, Mosquitoes, Lancaster bombers as well as American fighters later in the war. The only company that could make the piston rings for this engine was a company call Wellworthy, who were based in Ringwood, Hampshire on the south coast of England. Had the Germans destroyed this factory early in the war, the battle of Britain would have been lost and history very different. Once the War department realized this (after an accidental near miss on the factory in Ringwood) they moved the whole thing, lock stock and barrel to Scotland for the remainder of the war. My first summer job in university was spent working for Wellworthy, where I had the opportunity to read the company's history.

The allies also missed a knockout punch on Germany. Much effort was expended on trying to deny Germany oil from Russia for their war effort, by bombing oil fields, refineries, etc.

Germany only had two factories producing tetra-ethyl lead, which was vital to increase the octane rating of their fuel. Had these factories been destroyed, it would not have mattered how much oil the Germans had access to, they would not have been able to produce fuel with a high enough octane rating for their aircraft engines. At a stroke, the German air-force would have been neutralized, which surely would have ended the war much sooner. It was only after the war that the Allies found this out this information.

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#33
In reply to #32

Re: Pulse Wave Detonation Engine

01/10/2008 2:16 PM

Velly interlesting.....seriously, thanks for the infos.....

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#37
In reply to #32

Re: Pulse Wave Detonation Engine

01/11/2008 12:23 AM

Damn, isn't that the way things are in war? Always one step away from death/destruction? I am glad it ended up the way that it did; though...

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#11
In reply to #4

Re: Pulse Wave Detonation Engine

01/07/2008 4:55 PM

Hello micahd02

You refer to the V2 in your above post as the "buzz bomb".

Perhaps a typo, but the "Buzz Bomb" was actually the V1, which was the ramjet engine powered "flying bomb".

The V1 was flying at such a speed British Fighter aircraft could get alongside, and give them a flip, with a wingtip, hopefully sending the V1 crashing into the sea, or some uninhabited area.

The V2 was a Rocket, powered by Alcohol and liquid oxygen mixture, with a small auxiliary turbine.

Some interesting V2 facts and explanatory drawings are here: http://www.v2platform.nl/book/technical.html

Trust that clarifies the names used.

Kind Regards....

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#15
In reply to #11

Re: Pulse Wave Detonation Engine

01/07/2008 7:39 PM

Thank you Sparky. The clarification is magnificent, and I much appreciate the correction. Viet Nam history is my strong point, and I should have looked up the details for WWII, instead of relying on my Grandfatherly memory. I did know that Allied fighters were able to fly alongside one model and flip it, but assumed the wrong one.

And for further clarity, then, the donuts on a rope are explicitly from a revival of the V1 engine technology, NOT the V2.

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#16
In reply to #15

Re: Pulse Wave Detonation Engine

01/07/2008 7:48 PM

Hello again, micahd02,

The doughnuts on a rope cannot be made by any other sort of engine.

Read about a go-cart powered by pulsejet made in New Zealand, right here: http://aardvark.co.nz/pjet/gokart.htm

Kind Regards....

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#17
In reply to #16

Re: Pulse Wave Detonation Engine

01/07/2008 8:42 PM

Hey Sparky that is a cool link that you brought up! It must sound like a legion of banshees if it was heard that far away (3 miles?)! Watch, he'll be the first person to find an inexpensive way to get into space. At least the 1st private party that hasn't paid a whole lot of money to do so.

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#19
In reply to #16

Re: Pulse Wave Detonation Engine

01/07/2008 9:21 PM

Thanks, Sparky. I read about that one, when I was doing some research on building my own pulse-jet engine. In fact, it was the noise level that convinced me to shelve the ideal until some day when (big, big, big IF) I ever have enough room to do that without causing the neighbors to a)shoot me, or b)call the police to shoot me.

Hasn't happened yet. So now my sons and I are working over the idea of buying a mil-surplus jet turbine engine and putting it in a pickup truck, just for road-legal fun. Lot of engineering issues there, though, even AFTER acquiring the engine. So still working it over.

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#23
In reply to #19

Re: Pulse Wave Detonation Engine

01/08/2008 8:33 AM

"...buying a mil-surplus jet turbine engine and putting it in a pickup truck, just for road-legal fun..."

OK, the second 2 underlined terms can clearly be used in the same sentence, and the 1st and 2nd are marginal, but the 1st and 3rd appear mutually exclusive, and all 3 in one sentence are right out!

Your neighbors won't have to call the police to shoot you - the turbine whine on start-up should summon them quite nicely...

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#27
In reply to #23

Re: Pulse Wave Detonation Engine

01/09/2008 9:36 AM

Yeah. It all tends to be a bit off-putting.

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#20
In reply to #11

Re: Pulse Wave Detonation Engine

01/08/2008 3:29 AM

G'd Day Mate.

Very busy at the moment. I wonder how you guys can take the time and always be so constructive and helpful. I would prefer sitting at the computer all day and do, what we try, and do best, keep the ideas flowing. And the 'for sure' diligent attempts to settle the V1 or V2.

To the point.

The technology presented here is known. 70 years ago this concept was in some ones head. By consolidating efforts they achieved, back then, the "unthinkable". A normal engineer would not have been able to grasp the concept. It was "state of the art".

Now a days, we know all these things and hardly try to do the next jump forward. Time and current technology is so much asking for it. Maybe the link you provided regarding an experiment with serendipitously created Go Cat was meant to be on the funny side. If so, I must say, I have done some severely more dangerous experiments regarding the combustion of matters. It was not funny.

V2 thought that V1.

Now it's confirmed.

Have a good one. Ky

Your anecdotes and links were very helpful. Again. Thanks.

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#31
In reply to #11

Re: Pulse Wave Detonation Engine

01/10/2008 11:16 AM

Good and correct infos.

I visited Peenemünde in 2005, very, very interesting!!!! A bit of a long drive from the UK, but well worth it.

The worst part about the drive from Frankfurt, was the number of POW camps and Concentration camps (closed down of course, but often turned into a Museum or similar) that you pass on the way, simply dozens of them.....we visited Ravensbruck KZ, my wife was ill for 3 days afterwards......also Stalag Luft II & III......awful.....built around the Flak school to stop allied bombers from bombing it!!!!!

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