US Space Force Seeks Advanced Interceptors For Boost-Phase Missile Defense

The U. S. Space Force is pursuing innovative technologies to bolster its space-based interceptor capabilities, as reported by Defense News. According to a Small Business Innovation Research solicitation, the military branch seeks to develop high-performance interceptors that can engage ballistic missiles during their boost phase, within the Earth’s atmosphere. The desired interceptors would need to integrate advanced propulsion systems, seekers, and low-size, weight, and power (SWaP) designs into space vehicles.

This would enable rapid detection-to-intercept timelines, a critical aspect of effective missile defense. Current interceptors demonstrate high performance but are often large and not optimized for swift deployment or distributed constellations. The Space Force is looking for solutions that can match or surpass existing performance in a significantly smaller package.

The envisioned boost-phase interceptors would target missiles at altitudes below 120 kilometers, or approximately 75 miles, above the Earth’s surface. The intercept time should be under 180 seconds. Key characteristics of the desired interceptors include dual-pulse or throttleable motors, high-grain solid or hybrid propellants, and thrust vector control.

The Space Force is interested in features such as fast shutdown and reignition of rocket motors, and improved specific impulse for more efficient thrust. By exploring these advanced technologies, the U.