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SOURCE: AFI

The Pakistan Air Force (PAF) is set to redefine its aerial combat capabilities with the upcoming JF-17 Block 4, part of the ambitious PF-X (Pakistan Fighter Experimental) program. Slated for a debut in 2028, this project signifies a significant evolution from the baseline JF-17 Thunder, which has been a cornerstone of PAF’s fleet since its induction.

Originally designed in collaboration with China’s Chengdu Aircraft Industry Corporation, the JF-17 Thunder has seen several upgrades, each enhancing its combat effectiveness. A few years ago, proposals emerged for the JF-17.7 and JF-20, envisioned as advanced variants.

JF-17.7 is the variant was conceptualized to incorporate Diverterless Supersonic Inlets (DSI) and an Internal Weapons Bay (IWB), aiming to reduce the aircraft’s radar signature. JF-20 was Even more radical, this design proposed extensive stealth features, including a new air intake design optimized for reduced detectability and an IWB for internal weapon storage, significantly enhancing stealth capabilities.

Pakistan’s leadership in the PF-X program marks a new chapter in its pursuit of self-reliance and technological advancement in military aviation. The program aims to produce a 4.5+ generation fighter jet, with the JF-17.7 design seeming to be the frontrunner for development under this banner.

Although space constraints limit the IWB’s capacity, it will allow the aircraft to carry 2-4 Beyond Visual Range Air-to-Air Missiles (BVRAAMs) in a clean configuration, enhancing stealth by keeping weapons internal during the initial phase of engagement.

The challenge lies in optimizing the internal space for weapons while maintaining the aircraft’s agility and performance. The choice to limit the number of internally carried missiles reflects a strategic balance between stealth and combat load.

With the anticipated debut in 2028, the world will be watching how Pakistan navigates the complexities of integrating advanced technologies like stealth features and internal weapon systems into a platform known for its cost-effectiveness and adaptability. The success of this program could set a precedent for other nations looking to upgrade their military aviation assets independently or in partnership with allies like China.