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weapons' design and evolution thereof

Originally posted by Bill Cameron:
Gents,

As with fighter jets, human physiology is the limit here and I'd say we'd pretty much reached it already with handguns and small arms. Newton's Second Law can't be cheated. There is only so much recoil the human body can take while still using a firearm effectively.
While generally true for firearms at every TL, smaller bullets at hypersonic velocity could dramaticly increase magazine capacity and the G11 demonstrated the concept of multiple shots within a single recoil.

I suspect that we have only scratched the surface of recoil compensation. Slotted barrels and telescoping pistons could ultimately be augmented by Grav-belt technology. This would increase the maximum controlable energy and increase the damage for all firearms (either through larger hypersonic projectiles or much higher rates of fire.)
 
Bill Cameron; thanks for that. I was wondering if I wrote a piece of Traveller fiction would say a Desert Eagle look like a Desert Eagle, or pump shotgun look like a pump shotgun?

I've seen all the artwork in all versions of Traveller suggesting similar and disimilar designs. I guess ultmately it's up to each GM, but I wanted a basic starting point.
 
Originally posted by Blue Ghost:
...would say a Desert Eagle look like a Desert Eagle, or pump shotgun look like a pump shotgun?
Blue,

Yes, up to a point. Form follows function.

Look at a Sopwith Camel, P-51 Mustang, and F-22 Raptor. Each use a thrust agency to move wings through the air and provide lift. If you squint hard, each looks the same as the other. The details are wildly different but the basic package remains the same.

Now, if the F-155 Whosis of the year 2100 uses contra-grav tech for lift, the form paradigm 'breaks' and fighters no longer look like fighters from WW1.

AT is right in pointing out we are only now beginning to address recoil compensation, but there is still a limit in place due to human bodies. We can 'stretch' recoil over time with compensators or 'compress' the recoil of multi-round bursts in a 'single kick'. We can even lessen recoil by venting propellents along the barrel (albeit at some loss of muzzle velocity). However, the humna frame still has to handle the recoil.

It's only when we 'break' the recoil paradigm with something like self-propelled projectiles that things will change. And not all that drastically, mind you.

The shape of human body also controls things like trigger placement, grips, how we aim, all sorts of ergonomic effects. That future gyrojet rifle may have absurdly high muzzle velocities, but a human still has to hold it, fire it, aim it, load it, and all the rest.

Getting back to you Desert Eagle. There are all sorts of gizmos we can slap on a revolver now and will strap on one in the future; laser assisted aiming, speed loaders, even gyro stabilizers. Underneath the hood however, that revolver still looks like a revolver. Wyatt Earp will recognise it for what it is. Just as Natty Bumpo will recognise the XM-8 as a rifle.


Have fun,
Bill

P.S. You'll notice that Traveller's PGMP and FGMP weapons - which should have horrific recoil problems - require the firer to wear battledress. The battledress helps handle the recoil.
 
Originally posted by Bill Cameron:

Of course, in the 57th Century self-propelled and even self-aiming(!) small arms projectiles may be the norm.
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This begs the question: have 'smart' rounds been developed, either for the accelerator rifle or other small arms, in the Spinward Marches or elsewhere, and if so, what is their performance like? Rocket rounds like the archaic gyrojet are accurate, once the Tech 9 threshold has been crossed, it is just a matter of good engineering and proper manufacturing QC procedures. But even those still will not prevent the round from being stopped by a hand or a piece of fibreboard over the muzzle.
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The problem with self-propelled ammunition (the accelerator rifle) is low short range velocity. It takes time and distance to accelerate to killing velocity. A 12 gauge shotgun shell like dual function projectile that fires like a bullet at short range but is self-propelled and guided at long or extreme range might be the best of both worlds. In the OTU, accelerator weapons appear to be primarily a zero-G special use weapon.

A gauss launch system might also cure the short range weakness of self-propelled rounds.
 
Bill; that's kind of what my inclinations were, but I wasn't sure about the articulation. Thanks again.

Arthur; in another fiction piece (non-traveller) I had such ammunition.

atpollard; possibly.
 
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KELI GA/BAKKULA (1101-B245789-A)

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Now the mention of gauss has got me to thinking again. Since the gauss weapon principle relies solely on magnetic fields to properly function, would it not be fairly simple to create an electromagnetic field, if not around individual personnel, then in their immediate vicinity, by a suitably powerful electromagnet? This could have the battlefield effect of deflecting (or attracting) gauss rounds away from their intended targets.

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I also wonder whether an accelerator rifle/ACR, accelerator/snub or accelerator/gauss hybrid might not prove exceptionally useful, possibly as a shipboard small arm for Marine use, especially in the Frontier Worlds. A fair amount of contact out there takes place in zero-G (micro-G) or low-G environments. If it saves Imperial lives, then I am for it.

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Tell me more about your so-called 'smart' rounds.
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Gauss weapon designs generally use saboted ammunition; the sabot is something that interacts strongly with a magnetic field, the projectile is not.

Even ignoring that, the energy requirement for a magnetic field is linear in volume. A shielding field is at least 100,000x the volume of a gauss rifle field.
 
Remember, though, that the field doesn't need to be constantly on, but "pulsed" per round. It all depends on how much force is needed to be focused on the round (and what part of it; i.e. the nose, mid-section, or afterward) in order to pull/push it through the barrel and field, and out towards the intended target.

Myself, recalling loosely my university physics and first hand experience with magnets and magnetic fields, I don't recall said fields, even large ones, as having a large instantaneous pull. But maybe this has been worked out in the engineering of the weapon.
 
Originally posted by Anthony:
Gauss weapon designs generally use saboted ammunition; the sabot is something that interacts strongly with a magnetic field, the projectile is not.

Even ignoring that, the energy requirement for a magnetic field is linear in volume. A shielding field is at least 100,000x the volume of a gauss rifle field.
And with a field with that much juice can you imagine how it would interact with other things like hemoglobin?
 
And with a field with that much juice can you imagine how it would interact with other things like hemoglobin?
Not at all. Or not in the way you are thinking at least. Haemoglobin certainly has iron in it, but so do a lot of other compounds that don't interact significantly with magnetic fields.

I'd be more worried about cooking off grenades, and metal heating effects.

For a simple analogy, look what you can put in an MRI safely. Anything on that list will be fine near a strong magnetic field.
 
Originally posted by veltyen:
For a simple analogy, look what you can put in an MRI safely. Anything on that list will be fine near a strong magnetic field.
The kind of field Arthur was envisioning seemed to me more powerful by a few orders of magnitude ( magnit-tude get it! :D ) than an MRI. If you shoot through the tunnel of an MRI I'm pretty sure the bullets are not going to deviate,(possibly ruin an expensive bit of medical imaging equipment though) but the EM field Arthur was talking about will pull them off course. Sort of like comparing a zippo lighter to an acytelene torch.
 
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I dunno. If a magnetic field 60 times greater than that of the nickel-iron core of a size 8 planet's can launch a 3 kilogram (6.5 pound) steel oxygen tank from the doorway of the MRI room to lethal velocity, I'd have to imagine it might have all sorts of other non-medical applications. Of course, the point about non-ferric objects is a very valid one. Base metal slugs would be unaffected, as would titanium; I wonder about armor-piercing rounds, though.

I also wonder what effect (if any), magnetic field technology would have if somehow employed to steer lasers. Perhaps it could be used to distort or disperse the containment fields used by plasma and fusion weapons. Could pulsed gravitics technology be employed in a battlefield screen of some nature? Do these weapons systems exist already?
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Originally posted by Blue Ghost:
But we're talking about hurling needles, not compressed gas containers... aren't we? :rolleyes:
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Are you saying needles would be less affected by a strong magnetic field than a gas canister would be?
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Originally posted by Arthur hault-Denger:
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I dunno. If a magnetic field 60 times greater than that of the nickel-iron core of a size 8 planet's can launch a 3 kilogram (6.5 pound) steel oxygen tank from the doorway of the MRI room to lethal velocity, I'd have to imagine it might have all sorts of other non-medical applications.
The key word there is '3 kilogram'. Get a 3 kilogram object up to 20 m/s and it's moving at lethal velocity. Applying a 20 m/s delta-V to a gauss bullet has no meaningful effect on its lethality.
 
Originally posted by Anthony:
Applying a 20 m/s delta-V to a gauss bullet has no meaningful effect on its lethality.
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Let me rephrase my question: in a defensive battlefield environment, would externally applying a significant magnetic field (such as that induced by an MRI device) be sufficient to cause enough variance in the trajectory of an incoming ferrous projectile (whether fired by a gauss or other small arm), that said projectile would miss its intended target, (for all intent rendering it harmless)?
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I think the engineering behind the gauss weapon, at least in a Traveller way, is that the magnetic fields that run along the barrel operate independently of one another, and are only active once the trigger is pulled. I think another implication of the engineering is that the fields are typically confined to the barrel, and do describe a large magnetic field extending much beyond the barrel of the weapon itself.

It's one of those handwavum things. If we start poking at the science of Gauss weapons, then we should probably do the same for grav drives and thrust plates
 
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