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US Army Conducts Indirect-fire Test of Boeing-Nammo Ramjet 155 Munition Projectile

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US Army Conducts Indirect-fire Test of Boeing-Nammo Ramjet 155 Munition Projectile

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US Army Conducts Indirect-fire Test of Boeing-Nammo Ramjet 155 Munition Projectile
US Army Conducts Indirect-fire Test of Boeing-Nammo Ramjet 155 Munition Projectile

A Boeing and Nammo team set a record for longest indirect fire test of a ramjet-powered artillery projectile alongside officials from the U.S. Army — firing a Ramjet 155 munition from a 58-caliber Extended Range Cannon Artillery (ERCA) at Yuma Proving Ground, Ariz. The test advances development efforts for the Army’s top modernization priority, Long Range Precision Fires. The success follows last year’s Boeing-Nammo test recording the longest-ever indirect fire test of a Ramjet 155 munition. That test was completed using a 39-caliber towed artillery cannon at the Andøya Test Center in Norway.

“This program now has a thoroughly tested propulsion system that guarantees enormous range increases for all artillery cannons. We believe the major development hurdles have now been cleared and production is viable within a relatively short timeframe. Our successful tests demonstrate that ramjet projectiles — a real collaborative achievement of Boeing and Nammo — offer the range and precision desired by the Army,” said Brandtzæg. “Ramjet technology heralds a revolution in artillery, significantly extending range and delivering strategic advantages to our user,” said Morten Brandtzæg, Nammo CEO.

“Our objective was to demonstrate the ability to safely operate from the ERCA system and validate our performance. Both objectives were met. The team is working to deliver a superior, affordable precision strike weapon that can neutralize critical targets at long distances,” said Gil Griffin, executive director of Boeing Phantom Works.

U.S. Army’s Extended Range Cannon Artillery (ERCA)
U.S. Army’s Extended Range Cannon Artillery (ERCA). (Photo US Army Yuma Proving Ground)

The Boeing-Nammo solution is being developed under the Army’s XM1155 program. Considered a powered guided artillery munition, Ramjet 155 utilizes an air-breathing engine design that uses the cannon firing to provide the speed needed for combustion. In an upcoming test, Boeing and Nammo will integrate a precision guidance system, leveraging a Joint Direct Attack Munition (JDAM) mission computer onto the Ramjet 155. The demonstration will evaluate the system’s maturity and effectiveness against stationary and moving targets, and readiness to transition into the next phase of development.

Nammo, short for Nordic Ammunition Company, is a Norwegian/Finnish aerospace and defence group specialized in production of ammunition, rocket engines and space applications. The company has subsidiaries in Finland, Germany, Norway, Sweden, Switzerland, Spain, the United Kingdom, the Republic of Ireland, and the United States. The company is owned 50/50 by the Norwegian government (represented by the Norwegian Ministry of Trade, Industry and Fisheries) and the Finnish defence company Patria. The company has its headquarters in Raufoss, Norway.

As a leading global aerospace company, Boeing develops, manufactures and services commercial airplanes, defense products and space systems for customers in more than 150 countries. As a top U.S. exporter, the company leverages the talents of a global supplier base to advance economic opportunity, sustainability and community impact. Boeing’s diverse team is committed to innovating for the future, leading with sustainability, and cultivating a culture based on the company’s core values of safety, quality and integrity.

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