- XM1156 Precision Guidance Kit
The XM1156 Precision Guidance Kit is a
U.S. Armyprogram to develop a precision guidancesystem for existing 155 mm artillery shells. [http://www.globalsecurity.org/military/systems/munitions/m1156.htm XM1156 Precision Guidance Kit (PGK) - Global Security] ] The prime contractor is Alliant Techsystems, leading a team including Rockwell Collinsand Draper Labs.
In operation the PGK will screw into the nose of the
projectilemuch like the existing fuze. However as well as the fuzing function it will provide a GPSguidance package and control surfacesto correct the flight of the shell. This is analogous to the addition of a JDAMtail-kit to a dumb iron bomb, creating a precision guided munition. The system is currently expected to begin production in 2009, and to be in-service by 2010.cite web|url=http://defensenews.com/story.php?F=2793630&C=america|title=ATK To Make Precision Artillery Shell - defensenews.com]
* Guidance: GPS
** Increment I: < 50 m
circular error probable(CEP).
** Increment II: < 30 m CEP.cite web|url=http://www.defense-update.com/products/p/pgk.htm|title=Precision Guidance Kit (PGK) Improving the Accuracy of Artillery Fire - Defense Update]
* Unit cost: < $3000 [ [http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=defense&id=news/ARMY042507.xml Army munitions officials eye pending developments - Aviation Week] ]
June 2006- Raytheondownselected from XM1156 competition.
July 2006- BAE Systemsand Alliant Techsystems selected to take part in a competitive Technical Development (TD) program.
May 2007- System Demonstration and Development (SDD) contract awarded to Alliant Techsystems. [cite web|url=http://atk.mediaroom.com/index.php?s=press_releases&item=679|title=ATK Awarded Precision Guidance Kit Contract After Multi-Day Competitive Shoot-Off - ATK]
* [http://www.atk.com/Customer_Solutions_MissionSystems/cs_ms_w_gp_pgk.asp Precision Guidance Kit (PGK) - ATK]
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