Oicw
| HK XM29 OICW | |
|---|---|
 OICW disassembled: from top to bottom - fire control module, HE-module, KE-module; bottom left to right - bayonet, rifle magazine with cartridge, belt and grenade launcher with grenade | |
| Type of | shooting grenade launcher complex |
| A country |  Germany  USA |
| Production history | |
| Manufacturer | Alliant techsystem |
| Specifications | |
| Weight kg | 5,4 (without cartridges) 6.6 (Curb) |
| Length mm | 890 |
| Barrel length mm | 240 (KE module) 460 (HE module) |
| Cartridge | 5.56 × 45 mm NATO (KE-module) 20 × 85 mm (HE module) |
| Caliber mm | 5.56 (KE module) 20 (HE-module) |
| Work principles | removal of powder gases , rotary lock (KE-module) |
| starting speed bullets , m / s | 750 |
| Maximum range, m | 500 |
| Type of ammunition | 30- round box magazine (KE-module), 5 grenade magazine (HE-module) |
| Aim | 6x television |
In 2001, the complex was assigned the XM29 OICW index. In 2004, due to the insufficient effectiveness of the striking effect of the 20-mm ABM grenade (Air Burst Munition) and the need to increase the caliber of the grenade launcher , the complex was divided into two independent systems - the 5.56-mm machine gun XM8 (OICW Increment 1) and 25 -mm self-loading XM25 hand grenade launcher (OICW Increment 2), the development of which is currently frozen. The resumption of development of a single XM-29 complex is planned after testing independent subsystems and overcoming weight limitations through the use of a number of improvements and the latest achievements, including sensors and electronic components, composite materials, power supplies, ceramic shafts, wireless connectors and advanced digital technologies. At the same time, it is believed that a 25-mm grenade of controlled detonation will allow hitting targets that are also openly located, which also use concealed targets and elements of protective structures and equipment.
Content
Development
When developing the XM29 OICW complex, it was envisaged to ensure the interface of the complex with the infantry combat complex, Land Warrior, in particular, the presence of a video data transmission channel from the sight to the helmet-mounted display of a soldier or commander to hit targets in the absence of visual contact with them, including those hidden behind obstacles [ 1] .
Development was conducted on a competitive basis. Three industrial teams took part in the competition [2] :
- AAI Corporation, Coquisville , Maryland .
- Alliant Techsystems, Idain , Minnesota , and Heckler & Koch , Oberndorf , Germany .
- Olin Ordnance , St. Petersburg , Florida , and FN Herstal , Erstal , Belgium .
With which contracts were signed for the manufacture and preliminary testing of prototypes until 1994.
Two main applicants reached the final of the competition: AAI and Alliant Techsystems [3] [4] :
| prototype AAI | prototype ATK |
| (both options are integrated in the sighting system , built into the helmet of a soldier) | |
In parallel with the American OICW program, since 1994 a British program of the same name has been conducted, in which the consortium ATK (USA), Heckler & Koch (Germany / Great Britain) and Brashear LP (USA) were involved [5] [6] .
In 2004, the XM29 program was closed [7] , two separate programs were launched instead - the creation of a new 5.56mm XM8 assault rifle and a 25mm XM25 smart multi-charge hand grenade launcher.
Design
OICW consists of three modules:
- module "HE" (High Explosive) - the main module, self-loading 20-mm grenade launcher ;
- KE module (Kinetic Energy) - auxiliary, rifle ;
- fire control module (Full Solution Fire Control System) - has a day / night 6.0X multiple television sights , a laser rangefinder, a ballistic computer and a grenade fuse programming subsystem.
The KE module has no butt . Modes of fire - single or automatic. The rifle is guided by a single aiming unit and is equipped with a button block for controlling the fire control system.
The “NOT” module works due to automation based on the gas exhaust circuit. Barrel made of titanium alloy .
The fire control module consists of a television sight with a 6-fold increase, a laser rangefinder and a ballistic microprocessor computer, paired with each other as a whole.
Features
According to initial plans, for each infantry squad of 9 people there should have been 4 M29 complexes (XM29 after being adopted), which would thus replace the M16A2 systems with the M203 underbarrel grenade launcher and the M249 light machine guns . According to calculations, the effectiveness of OICW in comparison with the M16 / M203 complex should increase by 5 times due to the possibility of suppressing the infantry detachment of the enemy at ranges of 800-1000 m with an ABM (Air Burst Munition) grenade. The range to the target measured by the range finder is displayed on the sight display and automatically entered into the fire control system to calculate corrections for shooting conditions and determine the number of grenade revolutions on the trajectory. The programming of the grenade is carried out in weapons, at the stage of loading, and represents the introduction of the initial data and corrections issued by the ballistic computer to solve the problem of combining the point of non-contact detonation of the grenade with the target's contour.
However, its price turned out to be a significant drawback of the complex - in serial production, the cost of one sample should be about $ 10 thousand (the cost of the M16A2 assault rifle is about $ 600-700) [8] . Another disadvantage was the mass of the complex 8.16 kg (2003), which was recognized as “unacceptable for the US ground forces” [9] (according to the statement of work, there should be no more than 6.35 kg).
Ammunition
Weapons OICW allows firing two types of different-caliber ammunition intended for use in the main and auxiliary weapon systems. The ammunition of the main weapon includes a shot with a 20 mm HEAB (High Explosive Air Burst) fragmentation grenade. The ammunition support system of weapons includes standard 5.56 × 45 mm NATO cartridges.
The 20-mm air blast grenade structurally consists of two warheads - the head and the bottom, which are detonated by an electromechanical fuse located in the middle of the grenade. A similar scheme was chosen to increase the angle of expansion of the fragments. The fragments of the bottom warhead are heavier. In accordance with the TTT, it was planned to form a fragmentation field of a grenade capable of hitting manpower in a PASGT type NIB. The work of a programmable electromechanical fuse is based on the use of an electronic device for counting the number of grenade revolutions on the flight path to the point of detonation.
See also
- 80.002
- Aicw
- Daewoo K11
- OCSW ( Objective Crew Served Weapon )
- A-91
Notes
- ↑ Vizard, Frank . Smart shooter . // Popular Science . - July 1998. - Vol. 253 - No. 1 - P. 64-65 - ISSN 0161-7370.
- ↑ Foss, Christopher F. Selection focuses on two industry teams (Infantry Weapons) . // Jane's Defense Contracts . - May 1995 .-- P. 24.
- ↑ Superrifle For Future Troops . // Popular Mechanics . - October 1994. - Vol. 171 - No. 10 - P. 26 - ISSN 0032-4558.
- ↑ United States Army Weapon Systems 1998 . - Washington, DC: US Government Printing Office, 1998. - P. 187 - 266 p. - ISBN 0-16-049429-X .
- ↑ Small Arms Survey 2003 . - Oxford: Oxford University Press , 2003 .-- P. 52 - 329 p. - ISBN 0-19-925175-4 .
- ↑ Streubel, Peter . Heckler & Koch Auch im 21. Jahrhundert Weltspitze bai Hand- und Faustfeuerwaffen . // Wehrtechnik . - 2001. - Bd 33 - Nr 2 - S. 116 - ISSN 0043-2172.
- ↑ Alliant Techsystems / Heckler-Koch XM-29 OICW Combined Assault Rifle (USA) - Modern Firearms (Russian) , Modern Firearms (November 10, 2010). Date of treatment June 19, 2018.
- ↑ Maxim Popenker. Alliant Techsystems / Heckler-Koch XM-29 OICW combined assault rifle (USA) . world.guns.ru. Date of treatment September 1, 2010. Archived March 17, 2012.
- ↑ XM29 Integrated Air Burst Weapon . globalsecurity.org. Date of treatment September 1, 2010.