Northrop Grumman has received a $94.3m contract from the US Navy to design and qualify a 21-inch diameter second-stage solid rocket motor (SSRM) intended for the service’s extended-range missile programmes.

The initiative supports the US Navy’s objective to counter rapid air, surface, and hypersonic threats.

Under the agreement, continued design, production, and delivery of 60 units in an initial low-rate run will take place at Northrop Grumman’s Propulsion Innovation Center in Elkton, Maryland.

Propulsion systems from the company are planned for potential deployment on a variety of naval platforms as the US Navy considers extended range applications.

The new 21-inch rocket motor is intended to enhance speed and range for multiple mission types, such as air warfare, surface warfare, land strike operations, and ballistic missile defence roles.

US Navy officials expect the technology to support rapid and cost-effective fielding of hypersonic defence solutions.

Northrop Grumman propulsion systems and control senior director Gordon LoPresti said: “Being chosen by the US Navy is an honour and a testament to our rapid development capabilities, production capacity and leadership in advanced propulsion solutions.

“The successful development and demonstration of our SSRM in just 10 months showcases our unique, affordable, and versatile extended-range capabilities that will equip the US Navy to excel in its defence and deterrence missions. We are eager and prepared to rapidly qualify and produce these motors in quantities to meet the needs of the US.”