h a l f b a k e r yPoint of hors d'oevre
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Whilst waiting for lunch in the soup kitchen I invented a
way to make auto-adjusting rifling.
The device is a rifle barrel made of short tube sections,
which can be independently rotated.
But that's not the clever bit, the clever bit is each tube
section has many little rotatable section
of rifling. At
this
point a diagram might be handy - see lovingly hand-
drawn
napkin wossername.
Combining this with a magnetic inclinometer means that
the weapon automatically adjust the direction of rifling
to
overcome the Coriolis effect, no matter which
hemisphere
you are in, obviously the rifling needed at the equator is
zero.
Equally on a windless day, you can go over to reduced
power mode and turn the rifling off, and for left-handed
shooters, it's the easy solution to a perennial problem.
//Update - finally got the original sketch to work
I rest my case. Ok,ok it was either this or Arthur
Askey's
contribution to coding of alphabets for the early
computers
at Bletchely Park. His original family name is "Ascii" a
Finnish name with obscure origins, it was Anglicized to
'Askey' when his maternal grandfather immigrated in
1836.
Like a lot of people on the Enigma project, he preferred
not to talk about what he did there.
der sketch
https://www.flickr....489@N03/16951738167
[not_morrison_rm, Apr 17 2015]
[link]
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I can well understand Mr. Askey's reticence. My
maternal grandfather - the late Sir Filligree 'Phil'
Buchanan-Buchanan - would never speak about what
he did in the war, however much we pressed him.
After he died we discovered that this was because
he'd done bugger all. |
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Yes, but that did make him unsurprisingly popular with his shipmates ... |
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Key question: Does changing rifling actually have any effect
on bullet response to wind, Coriolis, etc? |
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Oh, the old "Does this idea actually work as advertised?" question. |
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I'll wager no. Compensating for the spin of the earth by adjusting the spin of the projectile seems unlikely. |
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I can't see any problem with having many small
moving parts on the inside of a gun barrel, so [+]. |
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//Key question: Does changing rifling actually have any effect on bullet response to wind, Coriolis, etc? |
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Well, I did consider the option of just a reversible barrel, in front of the chamber, so worse comes the worst it can be unscrewed and put on the other way around. But that's so jejune. |
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//I can't see any problem with having many small moving parts on the inside of a gun barrel, |
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See, added shotgun effect, at no additional charge. |
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Personally I'm wondering if with enough spin, could you make the bullet rebound from objects sufficiently well enough to make them go round corners? A la mini bouncing bomb.. |
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// it can be unscrewed and put on the other way around. // |
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... which will make no difference whatsoever. |
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Think about it; rifling is is either right or left-hand twist. Reversing it end-over-end makes no difference. |
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Hmm... wonder if loading the cartridge with a SF6 buffer would have any effect: powder explodes, heating the SF6 which stays at the back of the bullet as a sabot, keeping the smaller molecules from running out between the bullet and barrel. |
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The turbulence is tremendous, the SF6 would be completely mixed
with the propellant gases. There is an existing and rather clever bit of
technology called a "wad" which improves the seal quite well, but the
whole point of the forcing cone just ahead of the chamber is to swage
the projectile into intimate contact with the rifling. With jacketed
rounds, there's not much blow-by. |
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Even on artillery shells, the driving band manages a pretty good
metal-to-metal seal. |
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//Reversing it end-over-end makes no difference |
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Aha, you're just trying to get me to look down a lot of gun barrels . Is it something I said? Triggers incursion into Borg territory... |
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Sounds like a marching band, but on wheels? I can imagine Scottish regiments deploying Nissan pick-ups as tacticals with twin .50 cal b******s, but I would prefer not to. |
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// Aha, you're just trying to get me to look down a lot of gun barrels // |
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One would be enough. We'd have gotten away with it too, if it weren't for those pesky kids ... |
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// Scottish regiments deploying Nissan pick-ups as tacticals // |
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... and the slipstream would cause the kilts to swirl up ... the horror, the horror ... |
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