U.S. Navy and Air Force Developing Compact AIM-9X Sidewinder Missile for Enhanced Stealth and Range

The U.S. Navy and Air Force are advancing a new "Compact Variant" of the AIM-9X Sidewinder missile, designed to be smaller and more efficient for internal carriage in stealthy aircraft. This initiative aims to increase magazine capacity while enhancing range and performance. The Navy has requested $83.3 million for FY 2027, with the Air Force contributing starting in FY 2028.

The Compact Variant (CV) repackages existing SIP IV technology into a streamlined design, optimizing it for advanced aircraft with internal weapons bays. This development focuses on improving missile range and kinematic performance without compromising inner boundary capabilities, ensuring effectiveness at close ranges. The CV's smaller size allows more missiles to be carried internally, enhancing stealth and operational flexibility.

The project involves hardware and software design, platform integration, and extensive testing to mature the system. While specific details about the missile's configuration remain undisclosed, its development aligns with ongoing advancements in rocket propulsion technology, which could potentially increase future missile ranges by up to 1.5 times. This effort underscores a commitment to modernizing air-to-air missile capabilities for enhanced combat readiness.