Boeing and Nammo Conduct Successful Ramjet 155 Extended Range Artillery Projectile Tests
Boeing and Nammo Conduct Successful Ramjet 155 Extended Range Artillery Projectile Tests

Boeing and Nammo Conduct Successful Ramjet 155 Extended Range Artillery Projectile Tests

A team from Boeing and the Norwegian company Nammo has conducted successful ground-fire tests of its Ramjet 155 Extended Range Artillery Projectile – a technology to enable long-range precision fires, one of the U.S. Army’s key modernization priorities. The tests, led by Nammo and conducted during January and March in Norway, validated gun-launched survivability and performance predictions and expanded Ramjet 155’s employment envelope. The team continues to develop and mature the technology, with further testing and demonstrations planned in the coming months.

“Long-range precision-fires is a top modernization priority for the U.S. Army. Therefore, it also is a top priority for Boeing. We are very encouraged by the development progress, maturation, and ongoing testing of our Ramjet 155 projectile, which we believe will offer a superior, affordable capability against emerging threats,” said Steve Nordlund, Boeing Phantom Works vice president and general manager.

“We are seeing excellent progress in the development of the ramjet, with no major stumbling blocks,” said Nammo CEO Morten Brandtzæg. “The latest tests have been extremely promising.”

Since 2019, Boeing Phantom Works and Nammo have been working together under a strategic partnership to jointly develop and produce the next generation of boosted artillery projectiles to meet the Army’s long-range, precision-fire priorities. Ramjet 155 uses an engine in which the air is drawn in for combustion and is compressed solely by the forward motion of the projectile at supersonic speeds. The program builds on the success of Boeing’s Joint Direct Attack Munition (JDAM) and Small Diameter Bomb (SDB) programs and addresses range, accuracy, and volume of fire gaps between current artillery systems and those operated by potential adversaries.

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.

A Boeing/Nammo Ramjet 155 Extended Range Artillery Projectile rockets toward a target during testing in January at Nammo in Norway. (Photo by Nammo)