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Teeny Tiny (out of order) HFQ Snippet

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Re: Teeny Tiny (out of order) HFQ Snippet
Post by jgnfld   » Sat Apr 19, 2014 10:41 am

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PeterZ wrote:Sounds like a smoothbore mortar with round that generates its own spin. The tube wouldn't be as heavy as artillery but might need to be longer than Charisian mortars. The mortar rocket accelerates more slowly than its Charisian counter-part and might need a longer but thinner tube to give initial guidance.


Couldn't be part of some sort of recoilless system, could it? Doesn't fit any design I've ever heard of, but I'm hardly an expert.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by pokermind   » Sat Apr 19, 2014 11:25 am

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Sounds like given the angled holes the base of the rocket, the angled holes giving spin and thrust for stable flight. Some Congreve Rockets had them, the weapon that gave 'the rocket's red glare' to the Star Spangled Banner. Wiki on the Congreve Rocket: http://en.wikipedia.org/w/index.php?title=Special:Search&search=congreve+rocket&fulltext=1&profile=default

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Re: Teeny Tiny (out of order) HFQ Snippet
Post by Captain Igloo   » Sat Apr 19, 2014 12:15 pm

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PeterZ wrote:Sounds like a smoothbore mortar with round that generates its own spin. The tube wouldn't be as heavy as artillery but might need to be longer than Charisian mortars. The mortar rocket accelerates more slowly than its Charisian counter-part and might need a longer but thinner tube to give initial guidance.


Hale Rocket.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by Randomiser   » Sat Apr 19, 2014 2:53 pm

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Over on the 'future weapons' thread Thucydides mentioned the Russian 2B9 Vasilek Mortar-Gun https://en.wikipedia.org/wiki/2B9_Vasilek
which uses a high-low pressure system to get decent range with low recoil out of a much lighter barrel than usual. The brass disk sounds a bit like the part of the ammo which divides off the high pressure and low pressure areas. Don't understand enough to know if it would work with black powder though. Kudos to Thucydides if this turns out to be an early-model high-low pressure mortar.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by MWadwell   » Sat Apr 19, 2014 5:11 pm

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Captain Igloo wrote:
PeterZ wrote:Sounds like a smoothbore mortar with round that generates its own spin. The tube wouldn't be as heavy as artillery but might need to be longer than Charisian mortars. The mortar rocket accelerates more slowly than its Charisian counter-part and might need a longer but thinner tube to give initial guidance.


Hale Rocket.


Certainly sounds like it.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by PeterZ   » Sun Apr 20, 2014 3:00 pm

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Ditto on the kudos to Thucydides. I believe his idea is closer to where this idea is headed. Trough fired rockets would require larger venturi to generate thrust sufficient to propel the rocket. Having a mortar round that generates thrust as well as captures the force of expanding gasses wouldn't need venturis with bores as large. Aamof, the plate would better capture the force of expanding gasses.

I suspect that the walls of the mortar tube could be thinner for a given bore caliber. Thin enough that the tube could be lengthened and still use less iron or steel than a comparable Charisian mortar.

Randomiser wrote:Over on the 'future weapons' thread Thucydides mentioned the Russian 2B9 Vasilek Mortar-Gun https://en.wikipedia.org/wiki/2B9_Vasilek
which uses a high-low pressure system to get decent range with low recoil out of a much lighter barrel than usual. The brass disk sounds a bit like the part of the ammo which divides off the high pressure and low pressure areas. Don't understand enough to know if it would work with black powder though. Kudos to Thucydides if this turns out to be an early-model high-low pressure mortar.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by Michael Everett   » Wed Apr 23, 2014 3:21 am

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Mortar base-plate model showing how the holes allow for pre-determined angles of fire?
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by Piezoguy   » Wed Apr 23, 2014 10:00 am

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This links to a page showing the a 13 mm Gyrojet

http://cartridgecollectors.org/cmo/cmo05nov.htm

Developed in the 1960s for a really cheap sidearm. It never took off but has no recoil and weapon was manufactured from stamped sheet metal.

Rear of the bullet area shows nozzles that cased the projectile to spin. Propellant produced N2 so it produced no smoke and only a hissing sound.

Accuracy reports are spotty but with properly made ammo it was pretty accurate.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by packhunter   » Wed Apr 23, 2014 4:26 pm

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In LAMA there is the idea of developing a spring fired mortar for the church. One would assume this is what is being refrenced.
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Re: Teeny Tiny (out of order) HFQ Snippet
Post by chickladoria   » Wed Apr 23, 2014 7:15 pm

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So the church will develop the PIAT (although technically I suppose the name will be PIAP - Projectile, Infantry Anti-Personnel). Which will put them into realm of smokeless projectiles, unless the spring causes a fire of some sort. The range limitation will be a result of spring strength, and willingness of the operator to suffer major shoulder bruising.
Si fractum non sit, noli id reficere
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