Taiwan Launches Serial Production of Tien Kung IV Missile System

Taiwan has officially commenced mass production of its advanced air defense system, the Tien Kung IV (Sky Bow IV), marking a major step forward in the modernization of its military capabilities. This announcement was made by Li Shih-chiang, President of the National Chung-Shan Institute of Science and Technology (NCSIST), ahead of the 2025 Taipei Aerospace & Defense Technology Exhibition (TADTE).

The Tien Kung IV is an upgraded version of the Tien Kung III surface-to-air missile system, designed to intercept high-altitude cruise missiles and ballistic missiles at ranges of up to 70 kilometers. The missile uses a two-stage solid-propellant design and can reach speeds exceeding Mach 7, significantly enhancing Taiwan’s ability to counter advanced aerial threats.

A major innovation in the Tien Kung IV is its Active Electronically Scanned Array (AESA) radar, which is domestically developed. This radar allows for improved accuracy, enhanced situational awareness, and the ability to track multiple targets simultaneously. It is the first Taiwanese missile system to integrate an AESA fire-control radar, showcasing Taiwan’s growing defense technology capabilities.

The Tien Kung IV is designed to complement Taiwan’s existing ground-based defense systems, including the Tien Kung III and the U.S.-made Patriot PAC-3. Together, these systems form a layered air defense network, capable of countering threats across different altitudes. This integrated defense strategy ensures a robust and resilient protective posture for Taiwan in response to evolving regional threats.

Following successful combat evaluations, the Tien Kung IV has entered serial production, with deployment expected to begin in 2026. Taiwan’s Ministry of National Defense has planned the acquisition of 122 launcher pods, with 46 units scheduled for fiscal year 2026 and 76 units by fiscal year 2028.

The Tien Kung IV represents a major technological leap in Taiwan’s air defense architecture, combining indigenous innovation with strategic integration. As regional security dynamics continue to evolve, Taiwan’s commitment to strengthening its defensive capabilities underscores its determination to safeguard sovereignty and ensure stability in the Indo-Pacific region.