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Post by dwwolf on Dec 26, 2016 14:22:05 GMT
I have doing some testing on EFPs with the old style radshield payloads replaced by explosive pills with the minimum amount of explosives. With fuse being set at the same distance parameters as the main booster explosive.
Initial tests seem to validate this design as at the very least partially functioning (guidance being the main problem ).
I have 3 x1 frag cluster side to side in a layer above a booster charge and upping the amount of exlosives in the booster charge seems to tighten up fragment traces in paused action screen shots ( indicative of increased fragment velocity ).
Going to an almost 3kt nucear booster charge and the following pills bottem to top. 20 kg BeO x1 frag, 20 kg BeO x1 frag and a 35 kg x4 Osmium frag.
This gives a glowing target and many puncture clusters. Since the fusing is set at 100/500m glowing is probably indicative of simple irradiance.
To test this I removed first the BeO pills and then also the Osmium pill.
Removing the BeO pills did nothing. Removing the Osmium pill removed the puncture clusters.
Testing with BeO pills and booster nuke did not produce impact sites.
I think we can conclude that the BeO frags get destroyed by the nuke booster.
Now for the interesting bit...replacing BeO by diamond.
And now we are getting massive impact sites with extensive behind armor effects
Combined with frag traces that extend for a very very large distance.
I will have to experiment with fuse distance next.
Ps.
x1 or x4 denotes the amount of frags that each payload produces.
So 3 x1 means 3 payloads in the same layer ; each producing 1 fragment.
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Post by fenrin49 on Dec 26, 2016 15:30:46 GMT
Have you tested the same loads without nukes just frag with the same fusing?
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Post by dwwolf on Dec 26, 2016 16:02:35 GMT
Not directly.
Others have.
You basically get a KKV with a very minor degree of spread imparted by the explosive. And a good chance to get the missiles mass deleted from the simulation. Which usually is a considerable bit of kinetic energy.
EFPs trade standoff range for area of effect that a regular flak payload has. since we cant purposefully design shaped charges. Alot of the explosion's energy will be wasted by what we are doing here.
But in the case of nukes I see it as adding a kinetic energy component to a weapon that normally functions by irradiance.
And those 20kg diamond charges are really nasty.
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Post by dwwolf on Dec 26, 2016 16:09:39 GMT
My test missile is in the 600 to 700 kg range.
With about 10g accel,30seconds of burn time and a 1.32 second turning time.
500 kg Fluorine with 53 kg methane. Both devided over 2 staggered tanks so the first hit on a tank doesnt kill the missile.
Standard remote control.
Fairly nose heavy with the massive payloads under a 50cm long spacer.
Now will a similar mass of lightweight KKV or frag missiles be more effective ...most likely, yes.
But this is having fun with the editor 😀
And now that I think about it I think I want to test a similar mass of 1kg payloads in a couple of staggered layers.
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Post by amimai on Dec 26, 2016 18:47:59 GMT
Here is my formula for (reliable) NEFP designs
1. Have a layer of small nukes, yeild does not mater much as long as its +50t (minimum 3, 7 or more for best results)
2. A disk of frag, the diameter should be large enough to cover the layer of nukes completely.(the number of fragments can be high, in fact it may be marginally better)
3. Direct pursuit missile AI
4. Detonate at 1-5km for good hit rate
I'll post images later
This is tried and tested, my smallest NEFP that can put a hole in battleship armour at 1km is a single 7kg Os frag and 7x113t nukes(4kg total)
My biggest design uses 3x50kg Frag disks with 19x125t nukes stacked behind it all and literally rips ships in half even with 1m hard armour on them... at no point should you need more then 150kg of payload for a NEFP nuke!
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Post by dwwolf on Dec 26, 2016 19:10:13 GMT
Direct pursuit only as the final stage ?
Fuel %s, damping etc ?
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Post by dwwolf on Dec 26, 2016 19:14:06 GMT
Direct pursuit has been wonky for me.....but I have a hard fuse limit o9f 100m.
My Frags are big enough to cover the entire (single) nuke.
I just think that the BeOx is completely destroyed. I was shooting for a casaba howitzer style jet.
Your method might capture more energy in a forward vector.
I think I will donate some 95tonners to Science!
Right after I space the idiot that thought up stomach bugs.
🤒
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Post by amimai on Dec 27, 2016 2:43:14 GMT
here is the cleanest image I have of a NEFP hitting a target you can see the fragments of the main bomb(left) and the NEFP fragments(right) along with the hole it blew in the targets hull this was captured with 1km detonation of above 150kg NEFP roughly half a second after the bomb itself went off  |
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Post by 123nick on Dec 28, 2016 9:05:00 GMT
have any screenshots of the thing in action? or of the individual explosives and the osmium rad shield?
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Post by dragonkid11 on Dec 28, 2016 10:10:05 GMT
Wait, won't diamond get vapourised by the heat?
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Post by amimai on Dec 28, 2016 11:00:49 GMT
I have had some success even using potassium for NEFPs it's actually the first material I used and still use in my contact fuse micro NEFP/shape charge missiles.
I have to get around to posting full specs of all my working NEFP designs next time I am home...
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Post by dwwolf on Dec 28, 2016 14:28:26 GMT
Wait, won't diamond get vapourised by the heat? Dunno they worked better than my BeOx pills. Melting point is very high. I think they are damn hot however you get very noticeable frag traces. |
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Post by dwwolf on Dec 28, 2016 14:32:46 GMT
have any screenshots of the thing in action? or of the individual explosives and the osmium rad shield? No rad shield they dont work. (Other than as armor). Big chuck of 20kg Osmium payload 15cm in diameter with 1mg of explosive ..it breaks into 4 fragments. |
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Post by amimai on Dec 28, 2016 23:05:35 GMT
as requested 150kg NEFP missile, this has been unchanged since forever and is effective at over 5km(I have occasional hit at over that but anecdotal) missile warhead setup 123t micronuke Osmium Pancake AI setup |
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