ATK Successfully Tests Advanced 155mm Projectile

Low-Cost Saber Flies More Than 48 Kilometers After Gun Launch Using a Zone-5 Charge Saber Designed for Block 1B Upgrade to Excalibur ( Minneapolis, June 13, 2006 ) Alliant Techsystems (NYSE: ATK) announced today that it successfully tested its advanced, 155mm precision projectile - Saber. Saber offers the U.S. Army a design capability and a low per unit cost for the Block 1B upgrade to the Excalibur program. Saber was fired from a 155mm cannon, using a Zone-5 charge, the most powerful charge configuration used by U.S. forces. Saber will give artillery batteries a precision-fire capability with significantly more stand-off range than current 155mm artillery. It is designed for compatibility with all existing and future 155mm cannons. "The relatively simple design of Saber allows it to accurately fly to target with fewer moving parts; making the round highly reliable, very effective and importantly, lower-cost than the competition," said Dave Wise, General Manager, Advanced Weapons, ATK Mission Systems Group. The test was conducted at the Yuma Proving Grounds, Yuma, Ariz. After exiting the barrel, the tail fin assembly deployed and latched as designed. After the fins were locked in place, the round's rocket motor ignited and completed a full burn. The thrust provided by the rocket motor allowed the round to reach its 48- Kilometer objective. In previous tests, ATK has demonstrated the effectiveness of its INS/GPS guidance solution. The increased range of Saber's boosted, ballistic trajectory flight path reduces the time from gun-launch to impact and supports the expanded responsibilities of Brigade Combat Teams. Combined with its proven guidance solution, Saber will significantly shrink the potential impact zone, reducing the possibility of collateral damage. ATK is a $3.4 billion advanced weapon and space systems company employing approximately 15,000 people in 22 states. News and information can be found on the Internet at

Source: ATK
Date: Jun 13, 2006

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