{{short description|Failed US Navy development program}} The '''Ballistic Trajectory Extended Range Munition''' (BTERM) was a failed program to develop a precision guided rocket-assisted 127 mm (5-inch) artillery shell for the U.S. Navy. The program was originally named the Autonomous Naval Support Round (ANSR) and was developed by Alliant Techsystems.<ref name="GLOBSEC">[http://www.globalsecurity.org/military/systems/munitions/bterm.htm Ballistic Trajectory Extended Range Munition (BTERM) - Global Security]</ref>
The concept was similar to Raytheon's Extended Range Guided Munition with several simplifications and a larger rocket engine. The warhead was based upon that in the AGM-88 HARM anti-radiation missile, and was guided through GPS; however, unlike the ERGM it was intended to fly a strictly ballistic trajectory. Both programs were cancelled in 2008.<ref name="Wired">{{cite magazine|title=Navy Kills Satellite-Guided Weapon|first=Sharon|last=Weinberger|magazine=Wired|date=2006-03-26|url=https://www.wired.com/2008/03/naval-weapon-de/}}</ref><ref name="GLOBSEC"/>
==Specification== * Caliber: 127 mm (5 in) <!-- * Length: * Weight: * Speed: * Range: --> * Guidance: GPS/INS * Propulsion: Solid-propellant rocket engine * Warhead: Blast-fragmentation
==See also== * {{lwc|Long Range Land Attack Projectile}} * {{lwc|M712 Copperhead}} * {{lwc|M982 Excalibur}}
==References== {{reflist}}
==External links== * [http://www.atk.com/Customer_Solutions_MissionSystems/cs_ms_w_gp_bterm.asp Ballistic Trajectory Extended Range Munition (BTERM) - ATK]
Category:Cannon-launched guided projectiles Category:Artillery of the United States
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