X-Bow Confirms U.S. Navy Solid Rocket Contract Win

Credit: X-Bow

COLORADO SPRINGS—X-Bow, a New Mexico-based startup that emerged from stealth mode in March 2022, has confirmed it is developing a 3D-printed prototype solid rocket motor (SRM) for the U.S. Navy’s Standard Missile program under a newly awarded contract from the U.S. Naval Energetics Systems and Technologies program.

The Navy contract, which awarded a similar contract to Colorado startup Ursa Major at the same time, comes as the Defense Department faces a major shortfall in SRM production capacity. X-Bow’s Navy deal—which, like the contract to Ursa Major, covers the development of a new SRM design for application to the Mk. 104 dual-thrust rocket motor—is the first of several missile and propulsion contracts the company is expected to announce in the coming months.

X-Bow’s success follows the completion of an interim funding round in November led by Lockheed Martin Ventures, the corporate venture capital arm of the aerospace and defense manufacturer. The round fulfilled X-Bow’s matching requirements for a $60 million Strategic Funding Increase program with the U.S. Air Force’s AFWerx innovation arm that was announced in April 2023.

In June, X-Bow Systems also revealed it had completed a second test of the 32-in.-dia. Ballesta SRM and Bolt rocket. The XL-2B mission, funded by the U.S. Energy Department’s Los Alamos National Laboratory, is part of the company’s long-term plan to introduce a large new solid rocket motor for a future low-cost launch service.

The startup also is progressing with the development of larger SRMs targeting hypersonic roles. In 2023 the company unveiled a 34.5-in.-dia. motor that matches the diameter of the two-stage booster for the U.S. Army’s Long-Range Hypersonic Weapon and the Navy’s Conventional Prompt Strike programs. X-Bow described the 34.5-in. rocket as a first or upper-stage booster for medium-range ballistic missiles and launch systems.

Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

Paris Air Show 2025

Aviation Week's award-winning editorial team will deliver comprehensive coverage of the Paris Air Show 2025, including extensive news, insight, and analysis, continuing our tradition of authoritative aerospace journalism at the world's largest and most influential aerospace industry event.