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Old 05-18-2021, 09:35 PM
swaghauler swaghauler is offline
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Join Date: Jan 2015
Location: PA
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Pardon my typing, I haven't gotten home to get my poor ailing computer yet, so I'm typing this on my old S7 smartphone. The touchscreen keyboard leaves a lot to be desired.
I don't have it in the truck with me but there is a book printed by the Army every year that they give to Congress. It is a "wish list" of weapon systems they are seeking funding for. Skyhorse Publishing usually puts out the declassified versions. I have one from 2016 and the Army was seeking funding for two AAA systems to test.

The first was a self-contained module like the CROWS (common remotely operated weapon system) with a millimeter wave radar and an optical tracker paired to a GAU 19 50 Caliber gatling gun and TWO 4-round Stinger Missile modules. It had 2k rounds on the mount and was designed as a swarm drone defense system with a secondary ground attack capability. The unit would be mounted to either a Hummer or a JLTV with the crew firing the mount remotely from inside the uparmored vehicle. Unit weight was listed as around 2 metric tons fully armed with remote fire control station. This is only slightly heavier than a Navy MK38 25mm gun mount.

The other unit (fully experimental) caught my eye because it would fill the gap between the PATRIOT and SHORAD. The proposal was an M109 chasiss fitted with a tall turret containing an AESA radar, IR Tracker, IR optical sensor and Laser ranger/Designator. The weapon system consisted of either a 3 or 4 round box launcher trainable in elevation on either side of the turret for Rolling Airframe Missiles AND a center-mounted 57mm MK110 Cannon (with a pretty long barrel). The canon was equipped with a dual feeding mechanism on either side of the cannon containing 10 rounds in a vertically feed hopper and ejected its spent casings forward over the barrel and towards the right of the hull deck (to avoid the driver). 40 additional rounds would be stored in the turret bustle for 60 rounds on the mount. The listed Crew is driver, gunner, commander, and two loaders for the 57mm (one on either side of the cannon). I don't know if any more RAM Missiles were carried. The radar folded down for transport just like most modern SPAAGs can do. It looked about as tall as an M109A6 with an equally large turret and turret bustle (the back of the turret where ammo is stored). The drawing had access doors on the back of the turret (presumably to speed up reloading the ammo). Effective engagement range was touted as 10km with a 6km slant range for the cannon. The IR Optical tracking allows for NOE aircraft engagement and operations in a radar-denied environment. IDK if any actual prototypes are running around yet but the Marines new hybrid LAV turret's Stinger weapons mount looks suspiciously like the SHORAD mount's box launchers.
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