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- Extended_Range_Guided_Munition abstract "The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127 mm) Shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 million dollars in funding. The developmental round was designated EX 171. ERGM consisted of three major subsections; propulsion (rocket motor), warhead, and Guidance, Navigation and Control section. ERGM is fired from the 5 inch 62 Caliber Mark 45 gun Mod 4 at which point the fins deploy, rocket motor would ignite and lift the munition to at least 80,000 feet (24 km) when the canards would deploy and guide the ERGM to the target based on GPS guidance. It was to be used on Arleigh Burke class destroyers (hulls DDG-51 through 112).Despite the long development time the ERGM never worked as reliably as the older but significantly less expensive laser guided M712 Copperhead. During development, the ERGM failed several tests in which the tail fins failed to deploy at launch, rocket motors did not ignite, or the electronic components did not survive the stress of being shot from a deck gun. In February 2008, guidance components, rocket motors, and tail fins all failed in tests; Raytheon claimed they were testing specific functionalities rather than overall functionality and that they were \"on the verge\" of making the whole system operate reliably, but the Navy had lost confidence after years of issues and were no longer getting a return on investment. Rising cost was another factor in cancellation. The unit cost of the shell more than tripled, from $45,000 in 1997 to $191,000 by 2006 (in contrast the Copperhead average unit production price was about $30,000), reducing the projected buy from 8,500 to about 3,150. Program research-and-development costs had increased from $80 million to $400 million between 1997 and 2004, with total program costs going from $400 million $600 million. The Navy formally cancelled the ERGM program on 19 March 2008. BTERM was another U.S. Navy developmental round that included GPS guidance in an artillery shell; it too was terminated in 2008 after 4+ years of development by ATK.".
- Extended_Range_Guided_Munition thumbnail Ergm_medium.gif?width=300.
- Extended_Range_Guided_Munition wikiPageExternalLink index.sdo.
- Extended_Range_Guided_Munition wikiPageExternalLink pgp.
- Extended_Range_Guided_Munition wikiPageExternalLink ergm.
- Extended_Range_Guided_Munition wikiPageID "12035446".
- Extended_Range_Guided_Munition wikiPageLength "5054".
- Extended_Range_Guided_Munition wikiPageOutDegree "28".
- Extended_Range_Guided_Munition wikiPageRevisionID "648827080".
- Extended_Range_Guided_Munition wikiPageWikiLink 54_caliber_Mark_45_gun.
- Extended_Range_Guided_Munition wikiPageWikiLink Arleigh_Burke-class_destroyer.
- Extended_Range_Guided_Munition wikiPageWikiLink Ballistic_Trajectory_Extended_Range_Munition.
- Extended_Range_Guided_Munition wikiPageWikiLink Canard_(aeronautics).
- Extended_Range_Guided_Munition wikiPageWikiLink Category:Artillery_shells.
- Extended_Range_Guided_Munition wikiPageWikiLink Circular_error_probable.
- Extended_Range_Guided_Munition wikiPageWikiLink Cluster_munition.
- Extended_Range_Guided_Munition wikiPageWikiLink Dual-Purpose_Improved_Conventional_Munition.
- Extended_Range_Guided_Munition wikiPageWikiLink Explosive_material.
- Extended_Range_Guided_Munition wikiPageWikiLink Exponential_random_graph_models.
- Extended_Range_Guided_Munition wikiPageWikiLink File:Ergm_medium.gif.
- Extended_Range_Guided_Munition wikiPageWikiLink Flight_test.
- Extended_Range_Guided_Munition wikiPageWikiLink Global_Positioning_System.
- Extended_Range_Guided_Munition wikiPageWikiLink Inertial_navigation_system.
- Extended_Range_Guided_Munition wikiPageWikiLink Long_Range_Land_Attack_Projectile.
- Extended_Range_Guided_Munition wikiPageWikiLink M712_Copperhead.
- Extended_Range_Guided_Munition wikiPageWikiLink M982_Excalibur.
- Extended_Range_Guided_Munition wikiPageWikiLink Precision-guided_munition.
- Extended_Range_Guided_Munition wikiPageWikiLink Propellant.
- Extended_Range_Guided_Munition wikiPageWikiLink Raytheon.
- Extended_Range_Guided_Munition wikiPageWikiLink Rocket.
- Extended_Range_Guided_Munition wikiPageWikiLink Rocket-assisted_projectile.
- Extended_Range_Guided_Munition wikiPageWikiLink Rocket_engine.
- Extended_Range_Guided_Munition wikiPageWikiLink Shell_(projectile).
- Extended_Range_Guided_Munition wikiPageWikiLink United_States_Navy.
- Extended_Range_Guided_Munition wikiPageWikiLink White_Sands_Missile_Range.
- Extended_Range_Guided_Munition wikiPageWikiLinkText "Extended Range Guided Munition".
- Extended_Range_Guided_Munition wikiPageWikiLinkText "extended range guided munition".
- Extended_Range_Guided_Munition wikiPageUsesTemplate Template:Cite_web.
- Extended_Range_Guided_Munition wikiPageUsesTemplate Template:Redirect-acronym.
- Extended_Range_Guided_Munition wikiPageUsesTemplate Template:Reflist.
- Extended_Range_Guided_Munition subject Category:Artillery_shells.
- Extended_Range_Guided_Munition hypernym Precision.
- Extended_Range_Guided_Munition type Weapon.
- Extended_Range_Guided_Munition type Projectile.
- Extended_Range_Guided_Munition type Projectile.
- Extended_Range_Guided_Munition comment "The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127 mm) Shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 million dollars in funding. The developmental round was designated EX 171. ERGM consisted of three major subsections; propulsion (rocket motor), warhead, and Guidance, Navigation and Control section.".
- Extended_Range_Guided_Munition label "Extended Range Guided Munition".
- Extended_Range_Guided_Munition sameAs Q5421842.
- Extended_Range_Guided_Munition sameAs m.02vmp1_.
- Extended_Range_Guided_Munition sameAs Q5421842.
- Extended_Range_Guided_Munition wasDerivedFrom Extended_Range_Guided_Munition?oldid=648827080.
- Extended_Range_Guided_Munition depiction Ergm_medium.gif.
- Extended_Range_Guided_Munition isPrimaryTopicOf Extended_Range_Guided_Munition.