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Old 07-19-2017, 06:16 PM
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blackshire blackshire is offline
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Default D12-5 trashes aquarium!

Hello All,

If you were a cracked aquarium, would you rather just be tossed out as trash, or would you rather go out in a blaze of glory? That "privilege"--if one wishes to consider it as such--was conferred upon *this* aquarium (see: www.youtube.com/watch?v=czwBWB5u6Hg ), in which an Estes D12-5 (which, interestingly, was labeled "MODEL ROCKET ENGINE-MOTOR" [the fellow who videoed the underwater firing mistakenly said that it was a booster]) was fired while he recorded the event in slow-motion video (it's presented at actual speed as well), and:

He also fired an Estes C6-7 motor in a transparent vacuum chamber (see: www.youtube.com/watch?v=GxBRQXxBRic ). He mistakenly thought that the C6-7 normally burns (produces thrust, that is) for about 8 seconds, and he noted that "It burned in only about a second in the vacuum" (which is roughly the C6-7's normal thrust duration, of course, with the other 7+ seconds of burning involving the smoke-producing delay charge and the ejection charge). In addition:

He also made and fired a transparent model rocket motor (see: www.youtube.com/watch?v=_xvVJQSGHts ), which he produced by milling the rolled paper casing off the nozzle/propellant/delay charge/ejection charge of an Estes C6-7, which he cemented inside a glass tube of almost exactly the same internal diameter as the paper casing. Ah, such fun!
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Last edited by blackshire : 07-19-2017 at 07:33 PM. Reason: Fixed a typo...
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Old 07-19-2017, 07:25 PM
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BEC BEC is offline
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..and he said at least a couple of times he did't think it had an ejection charge. With all his cleverness you'd think he could have read what the numbers mean somewhere......

That said, it was quite something to watch.
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Old 07-19-2017, 07:39 PM
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blackshire blackshire is offline
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Quote:
Originally Posted by BEC
..and he said at least a couple of times he did't think it had an ejection charge. With all his cleverness you'd think he could have read what the numbers mean somewhere......

That said, it was quite something to watch.
Yes...that information is all in the packaging. I'm glad (and so was he) that he didn't cut the recording before the ejection charge fired (although if it had been a D12-0, its forward burn-through would have been something to see underwater, too! [I'll suggest that to him--cracked aquariums are probably available gratis]). Just as "You can lead a horse to water, but you can't make it drink," "You can lead a human to knowledge, but you can't make it think" (this isn't universally true, fortunately).
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
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Old 07-20-2017, 07:20 PM
Peter Olivola Peter Olivola is offline
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I prefer the Dorothy Parker version: "You can lead a horticulture but you can't make her think."
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