Executive Summary
This paper technically reviews space-based boost-phase missile defense, analyzing the feasibility of proposed systems like Booz Allen Hamilton's Brilliant Swarms. It concludes that low-mass interceptor satellites, such as the 40-80 kg Brilliant Swarms, are fundamentally incapable of providing effective boost or ascent-phase defense against realistic missile threats due to physics constraints and the need for extensive propellant. Such systems would offer no practical defense coverage.
Why It Matters
This document critically assesses the technical viability of space-based missile defense systems, providing essential insights for defense analysts evaluating strategic capabilities and procurement decisions. It highlights the significant technical challenges and limitations of proposed low-mass interceptor constellations.
Key Takeaways
- Low-mass space-based interceptors (e.g., 40-80 kg) are technically incapable of providing effective boost or ascent-phase missile defense due to physics constraints on propellant mass.
- A system like Brilliant Swarms would offer no practical defense coverage against realistic threats, as adversaries could exploit undefended areas.
- The rationale for space-based interceptors (avoiding midcourse countermeasures) is undermined if the system cannot perform boost/ascent-phase intercepts, making it a less effective midcourse defense.
- The 20-year cost of a system like Brilliant Swarms would be significantly higher than initial estimates, ranging from $85 billion to $105 billion due to replacement cycles.
Strategic Relevance
This analysis directly impacts strategic planning for missile defense, highlighting the technical limitations of current proposals for space-based boost-phase intercept. It underscores the need for realistic assessments of system capabilities against evolving threats and informs resource allocation for future defense architectures.