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"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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5q5q? 
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hah !!! - and 2q + 2q = ??
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Clever guy!  
Anything that is unrelated to elephants is irrelephant
Anonymous
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The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
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Never argue with a fool. Onlookers may not be able to tell the difference.
Mark Twain
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... liable to get your account closed in the lounge?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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chuckle - hopefully not, but I couldnt let yours slide by
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5q + 5q = matter baby / updog. 
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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What's Baby?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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I'm not sure, but nobody puts it in the corner.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Is q a constant? Because if it isn’t then could the answer
10q vary much?
If you can't laugh at yourself - ask me and I will do it for you.
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DRHuff wrote: Is q a constant?
I prefer the term PITA[^] myself.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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Now youtr just Trelane me trolling me...
If you can't laugh at yourself - ask me and I will do it for you.
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Following stern queen (5)
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yep
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Last thursday there was a mysterious but interesting sounding article linked in the Code Project Insider, "Engineers just tested an 'impossible' detonation engine". I took a look but really had no idea what the elephant they were talking about or why anyone cared.
Scott Manley posted a useful video yesterday: What Is A Rotating Detonation Engine - And Why Are They Better Than Regular Engines - YouTube .. now I feel like I at least know something about why this is a Cool Thing.
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First thought that came to my mind was the rotary (Wankel) engine
... brought back memories of an old Mazda RX2... (back when petrol was pennies and kids had real fun)
but I think this is something else, I'm also not remotely a mechanical enginerd.
pestilence [ pes-tl-uh ns ] noun
1. a deadly or virulent epidemic disease. especially bubonic plague.
2. something that is considered harmful, destructive, or evil.
Synonyms: pest, plague, CCP
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I thought of the type of radial engine in which the cylinders rotate around the shaft.
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It's different than a rotary engine.
Basically, a detonation engine works like a cylinder does in a traditional internal combustion engine. You have a detonation chamber that has a fuel air mixture injected into it, then ignited, which then charges out of a tube to propel whatever.
A rotating detonation engine builds on this concept except instead of a tube, the detonations are set in a self propelling cycle around a cylinder of sorts. The detonations ride the wall of the cylinders in a loop, each one igniting the next cycle, and creating thrust out the center. Something like that anyway.
Real programmers use butterflies
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That bit's irrelevant, I think. It's the propagation speed of the "flame front" that matters - it's a "detonation wave" rather than a "deflagration wave", which means that the unburnt charge doesn't get time to get out of the way of the flame that's going to burn it and so the engine efficiency rises dramatically - a bit like having shaped inlet valves and seats in a IC engine to promote a faster mixing of the incoming charge and a much, much faster flame front when the spark plug sets it all off. Faster flame == more efficient combustion and a much more "violent" bang - so more power for the same fuel / air mix and swept cylinder diameter. The "rotating" part is is a feature of the actual engine flame front design, and doesn't imply anything about the actual "detonation instead of deflagration" shenanigans.
There is of course always the original "detonation engine": Project Orion - Wikipedia[^] - but that's a little unfriendly on a populated planet ... 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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My first motorcycle had a rotary detonation engine: as soon as it got spinning well, it would blow up ... 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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What bike was that ?
"We can't stop here - this is bat country" - Hunter S Thompson - RIP
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