The XM813 30mm Autocannon
 

The US Army is currently deploying this derivative of the Mk44 Bushmaster that's capable of using the Mk310 Programmable Air Burst Munition for use vs targets in defilade and more importantly drones/helos/aircraft.

Should this system be Weapon Class 19 (AC with limited AA ability) or 4 (flak)?

Re: The XM813 30mm Autocannon
 

Either / Or. The thing to do would be build a test unit with each type then deploy it in a situation you want to re-create then decide what does it best. Since you want both ground and air I'm thinking 19 would be best

Re: The XM813 30mm Autocannon
 

19 would be my guess.

But there may be some qwerk in WinSMPBTs code I'm not aware of that would say prevent a class 19 weapon from engaging drones/aircraft that don't approach thru a units current firing arc thus it wouldn't engage drones/aircraft entering it's weapons range like a class 4 (flak) unit would.

So just thought I'd ask.

Thanks!

Re: The XM813 30mm Autocannon
 

class 19 fires at helicopters (it only has low elevation)

if you want full fat FLAK, then the weapon would have to be class 4 like a big AAMG.

Re: The XM813 30mm Autocannon
 

Ahhhhh!

That's why I asked!

Full FLAK it would need to be.

Thanks!

Re: The XM813 30mm Autocannon
 

Yeah BUT..... you want this to fire on ground targets .........Yes?

And if yes then Class 19 - Auto Cannon - operates exactly like any other auto cannon, but it has limited AAA capabilities against lower flying planes and helicopters.

Re: The XM813 30mm Autocannon
 

Flak still fires at ground targets ... OR does it have a reduced chance to do so???

My understanding is main purpose of the round/weapon is anti-drone.

Re: The XM813 30mm Autocannon
 

From my experience Flak fires at ground targets like any other unit however you can modify behaviour using the op fire filter vs ground targets & the Y key vs air targets.

Op filter range 6 for all targets for example & if you wish Y to 20.
Air attacked out to 20 hexes ground attacked out to 6

Re: The XM813 30mm Autocannon
 

Yep, same here.
Just wanted to find out if I was missing something, or unaware of some feature in the code; like class 19 really only firing at low elevation targets (helos).

Re: The XM813 30mm Autocannon
 

Class 4 AAA used to button up (to 0 shots) when pinned. Since about 10 years or so back, it loses some shots if pinned, but not to 0 as of old.

One reason a cupola type MG is good for RWS style mounts rather than a class 4, the cupola MG if the vehicle is buttoned does not lose shots. But cannot fire at planes, one trade-off amongst many.

Re: The XM813 30mm Autocannon
 

Thanks for all the clarification DRG.
I have a much better understanding of the trade offs between the two weapon classes.

Re: The XM813 30mm Autocannon
 

It is important to remember the real purpose of this ammo, which is to take out infantry. The airburst is primarily designed to disable (Or worse.) troops that are in it's..."ability to defeat targets in defilade positions. (Northrop Grumman)" as taken from ref. 1 from the Northrop Grumman website, Ref. 1 below. Secondary to this is the ability to use this against helos and UAV's to a limited extent.

Next up "Point Detonation" designed for "in class" anti armor and soft targets.

Finally the "Point Detonation with Delay" designed for use against troops within buildings and to a lesser bunkers based on type.
https://militaryleak.com/2020/07/10/...ter-chain-gun/

And finally as to the STRYKER 30mm it's not fielded at this time. From the last ref. "...although the service said the decision should not delay plans to begin fielding the weapon to soldiers in 2022."
https://taskandpurpose.com/military-...annon-fielding
https://www.janes.com/defence-news/n...b-43d052efe123
https://www.janes.com/defence-news/n...-stryker-dvha1
https://www.janes.com/defence-news/n...petition-again

Regards,
Pat
:capt:

Re: The XM813 30mm Autocannon
 

Should we be increasing the rounds' HE kill rating for many systems to account for programmable ammo?
i.e. 120mm DM11 multi-purpose high explosive, M829A4 armour-piercing, M-337 HE-MP-T, APAM, 'Ainet'; 40mm Bofors, CT40, Super 40 Bushmaster; 35mm Oerlikon's AHEAD; 25mm PABM, etc

Re: The XM813 30mm Autocannon
 

In my view probably not most programmed fire requires stationary fire & the majority of units that use it have a giro fitted & will often move before firing.
Timed burst has to be very accurate to work so fire against units in defile on a slope - through a window - at a helicopter etc requires Lase then set time fuse for exact distance.
It would need extra HE kill only if has not used any move points or some such. For the impact it would have in a battle happy with as is.

Re: The XM813 30mm Autocannon
 

I'm not going to make this hard, whatever we do in the game or code is well, whatever we do in the game. And that's fine.

The process breaks down much more simply then you might expect and is no different then with any other conventional ammo. The difference lays within "tools" used is all.

No difference: Simple LRF and FCS to target - done.

The difference: Less loader interaction required, shell is already equipped to be assigned detonation mission, FCS sends data to the shell via the gun or breech once loaded.

In the case of this shell, in this thread, through wireless means.

I found a very simple breakdown of this in the ref. below, I found more technical ones however, I felt except for attaining more in depth knowledge, I didn't feel it worthwhile for this discussion. Simply a case of KISS. :cool:
https://www.overtdefense.com/2019/09...he-modern-era/

You'll note "our" airburst shell is the top picture used. I hope you also noticed those "jaundiced" looking guys in the trench of that picture weren't wearing their helmets, what a bunch of dummies!!!! :D

Regards,
Pat
:capt: