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Post Info TOPIC: UH-1D with XM-215 Suppressive Fire Weapon System


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Posts: 3381
Date: Mar 7, 2015
UH-1D with XM-215 Suppressive Fire Weapon System
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In 1968 the Army Limited War Laboratory developed a weapon system for troop-carrying UH-1D/H helicopters for close suppressive fire during take-off and landing in combat operations. It consisted of four modules mounted under the nose, each containing 306 barrels for firing .22 caliber rounds, arranged to spread forward of the aircraft similar in principle to a shotgun.

It seems only four of these prototype systems were built by 1971, when the project was cancelled.



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Posts: 1328
Date: May 24, 2015
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I imagine it would only be effective at relatively close range because of the rotorwash. :P



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Date: May 26, 2015
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Talk about overkill!! Wow! .22 ammo may be small but in a barrage like that, any man who met it's wrath instantly became a "holy man"! Yikes!

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Date: May 27, 2015
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Except for two major problems, one of them being rotor downwash and other wind conditions effecting the small caliber rounds as Leela already pointed out. The other is that the system was meant to be operated like a directional mine. The gunner could not fire each barrel separately and instead had to fire the entire payload of each unit - Four shots and they had to count, get as many targets as you could. It was more efficient to use traditional means of airborne defense (door guns, outrigged mounts, undernose grenade launchers, etc.)



-- Edited by retroistic on Wednesday 27th of May 2015 03:44:48 PM

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Date: Jun 2, 2015
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Though the points raised make sense, I think the name suggests that these were mainly to keep the enemy at bay rather than to actually hit anything with extreme accuracy. Nevertheless, a modern weapon system in a hot LZ with only four shots is pretty useless.



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Veteran Member - Level 2

Posts: 168
Date: Jun 3, 2015
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rotor wash will do nothing from the nose you have only a few feet,,,, With a limited pay load and torque limits the added weight is not wanted. . .specially in Viet Nam.....High D A.

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Date: Jun 3, 2015
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hillberg wrote:

rotor wash will do nothing from the nose you have only a few feet


 Operators of the early M75 in noe/take-off/landing situations would disagree. Wind conditions from above and reflecting off the ground (in ground effect) will affect any small projectile, especially .22 rounds.



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Posts: 168
Date: Jun 7, 2015
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Windage is for forward flight the spinning round will climb on one side and dive on the other due to coanda effect. ARMY helicopter gunnery training......

.223 rounds to 50 cal rounds behave the same.

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