PROJECT KUSHA INDIAN ARMY AIR DEFENCE WEAPON SYSTEM

 

Successful Maiden Test Execution

On July 23, 2026, India’s Defence Research and Development Organisation (DRDO) executed the successful maiden flight-test of the indigenous Project Kusha—also known as the Extended Range Air Defence System (ERADS). Launched from Dr. APJ Abdul Kalam Island off the coast of Odisha, the missile intercepted a high-speed, high-altitude electronic target simulating a low-radar-cross-section (RCS) stealth aircraft. Ground-based 3D observation and Multi-Function Fire Control Radars continuously tracked the target, validating the missile’s hybrid active AESA radio-frequency (RF) and imaging infrared (IIR) terminal seeker, optical proximity fuze, and directional warhead.

Architecture & System Capabilities

Project Kusha was approved by the Cabinet Committee on Security (CCS) in May 2022 and received an Acceptance of Necessity (AoN) for ₹21,700 crore ($2.6 billion) to procure five squadrons for the Indian Air Force. Instead of relying on a single missile, Kusha utilizes three interceptors launched from common, mobile Transporter Erector Launchers (TELs):

• M1 Interceptor (Range: 120–150 km): Engages tactical strike aircraft, anti-radiation missiles, and low-flying cruise missiles.

• M2 Interceptor (Range: 250 km): Neutralizes high-altitude stand-off jammers, strategic bombers, and long-range UAVs.

• M3 Interceptor (Range: 350–400 km): Primary Anti-Access/Area-Denial (A2/AD) weapon designed to target Airborne Early Warning and Control (AEW&C) platforms and incoming short-to-medium-range ballistic or hypersonic threats.

Powered by dual-pulse solid-propellant rocket motors with thrust-vectoring nozzles, the interceptors achieve speeds exceeding Mach 5.5, relying on active AESA millimetre-wave RF and IR seekers alongside direct hit-to-kill kinetic impact technology.

Strategic Role in India’s Multi-Layered Air Defence

Kusha forms the outer shield of India’s integrated air defence grid operating under the Indian Air Force’s Integrated Air Command and Control System (IACCS). Under Mission Sudarshan Chakra, it links with existing systems—such as the S-400 Triumf, MRSAM (Barak-8), Akash-NG, QRSAM, and VSHORAD—to create a unified C4ISR "kill web". Through multi-sensor data fusion, target data from naval or airborne radars can guide a land-based Kusha interceptor without turning on the launcher’s primary search radar until the terminal phase, minimizing vulnerability to anti-radiation missiles.

Comparative Analysis: Kusha vs. Global Systems

Feature / System	DRDO Kusha (India)	S-400 Triumf (Russia)	MIM-104 Patriot PAC-3 MSE (USA)	THAAD (USA)	HQ-9B (China)
Max Interception Range	150 / 250 / 400 km	40 to 400 km	30 to 160 km	200 km	250 km
Max Altitude	30 km (100,000 ft)	30 km	24 km	150 km (Exo-atmospheric)	27 km
Max Speed	Mach 5.5+	Mach 4.8 to 12	Mach 4.1	Mach 8.2	Mach 4.2
Guidance / Seeker	Hybrid Active AESA RF + IR	Command + Semi-Active/Active RF	Active Millimetre Wave Radar	InSb Focal Plane Array IR	Active Radar Homing
Radar Coverage	360° AESA Multi-Function	360° Panoramic Acquisition	120° Phased Array (270° LTAMDS)	120° Single-Face TPY-2 X-band	360° Phased Array
Kill Mechanism	Directional Frag / Hit-to-Kill	Blast Fragmentation	Kinetic Hit-to-Kill	Pure Kinetic Hit-to-Kill	Pre-fragmented HE
Est. Squadron Cost	~$500 Million (Indigenous)	~$600–700 Million	~$1.1–1.5 Billion	~$2.5–3.0 Billion	~$400 Million (Internal)

Key comparative takeaways:

• Vs. S-400: Kusha features modern Gallium Nitride (GaN)-based AESA radars and dual-mode active RF/IIR seekers, offering better clutter rejection against stealth threats than the older S-400 radar architecture. It also eliminates foreign supply-chain risks.

• Vs. Patriot PAC-3: Patriot focuses heavily on tactical point-defence (capped under 160 km range). Kusha’s M3 interceptor extends coverage to 400 km with built-in 360° radar coverage.

• Vs. THAAD: THAAD is a dedicated upper-tier exo-atmospheric ABM platform (up to 150 km altitude). Kusha is an atmospheric multi-role area air defence system (up to 30 km altitude). India's BMD Phase II (AD-1/AD-2) handles THAAD's exo-atmospheric role.

• Vs. HQ-9B: Kusha outperforms China's HQ-9B in range (400 km vs 250 km) and speed (Mach 5.5 vs Mach 4.2), denying adversary support aircraft safe standoff space along border zones like the Line of Actual Control (LAC).

Industrial Scale & Production Roadmap

Project Kusha is being mass-produced via a public-private defense model. Bharat Electronics Limited (BEL) serves as the primary system integrator and radar supplier (expecting over ₹40,000 crore in orders), while Bharat Dynamics Limited (BDL) handles missile assembly, rocket motors, and canisterisation alongside over 100 Indian MSMEs. Dedicated production facilities in Telangana, Andhra Pradesh, and Karnataka aim to produce 300 to 400 interceptor missiles annually by 2032.

Future Outlook & Testing Schedule

Beyond land deployments, DRDO is developing a naval variant for the Indian Navy’s Project 18 destroyers to counter high-speed anti-ship ballistic missiles. Additionally, unencumbered by end-user export restrictions, Kusha positions India as a potential exporter of long-range air defence platforms.

Target Roadmap:

• Late 2026–2027: Developmental trials of the M2 (250 km) and M3 (400 km) variants from Abdul Kalam Island.

• 2027–2028: Integrated Indian Air Force user trials under active electronic warfare scenarios.

• 2028–2030: Phased induction of the first five Kusha squadrons into active IAF service.