Akash Missiles

Akash is an all-weather, medium-range surface-to-air missile (SAM) system developed by India to protect vulnerable areas and points against air attacks. Designed by the Defence Research and Development Organisation (DRDO) and produced by Bharat Dynamics Limited (BDL) and Bharat Electronics Limited (BEL), the system forms a critical layer of India’s integrated air defence architecture. It can target aircraft, helicopters, cruise missiles, and unmanned aerial vehicles at ranges up to 25 to 30 kilometres.

System Architecture and Design Features

The Akash weapon system operates on an automated, network-centric framework capable of tracking and engaging multiple targets simultaneously. It comprises a battery command post, three-dimensional central acquisition radar, multi-function guidance radar, and mobile launchers carrying three ready-to-fire missiles.

• Propulsion Mechanism: The missile uses a two-stage solid propellant booster paired with an integrated ramjet rocket engine. The ramjet sustains supersonic speeds ranging from Mach 1.8 to Mach 2.5 throughout its flight envelope, ensuring high sustained kinetic energy during intercept phases.

• Guidance System: Mid-course guidance uses a command link from the ground radar, while terminal phase tracking relies on an active or semi-active radar seeker.

• Warhead Dynamics: It carries a 60-kilogram high-explosive pre-fragmented warhead integrated with a digital proximity fuse to maximize destruction probability against high-speed aerial threats.

• Mobility Platforms: The system is mounted on tracked vehicles (modified T-72 chassis) for Army regiments or high-mobility wheeled vehicles (TATRA trucks) for Air Force squadrons.

Technical Specifications

Key Variants and Upgrades

The Akash platform has undergone major iterations to extend its operational envelope and detection capabilities against low radar-cross-section threats.

Akash Mk-1 and Mk-1A

The baseline Akash Mk-1 entered active service with the Indian Air Force in 2012 and the Indian Army in 2015. The upgraded Akash Mk-1A variant integrates an indigenous active radio frequency (RF) seeker, improved kill probability, and enhanced performance against low-flying targets in heavy electronic countermeasure environments.

Akash-NG (New Generation)

Akash-NG is a redesigned variant engineered for the Indian Air Force to counter high-speed, agile threats with low radar signatures.

• Dual-Pulse Solid Motor: Replaces the ramjet engine with a dual-pulse solid rocket motor, reducing system weight and improving reaction time.

• Active Seeker: Features an indigenously developed Ku-band active radar seeker for precise terminal guidance.

• Esa Radar Technology: Uses an active electronically scanned array (AESA) multi-function radar for improved target handling capacity.

• Canisterized Launcher: Stored and launched from a sealed canister, enabling rapid transport and longer shelf life.

Rajendra Radar and Sensor Suite

The operational brain of the Akash battery is the Rajendra Radar, a multi-function passive electronically scanned array (PESA) radar mounted on a tracked or wheeled platform.

• 3D Tracking: Performs target search, multiple target tracking, and missile command guidance functions simultaneously.

• Target Management: Tracks up to 64 targets at a range of 60 kilometers and guides up to 8 missiles simultaneously against 4 targets.

• Electronic Counter-Countermeasures: Incorporates frequency agility and side-lobe blanking to resist enemy electronic jamming.

Strategic Export and International Reach

Akash represents one of India’s biggest indigenous defence export successes under the defense production self-reliance initiative. In December 2020, the Union Cabinet approved the export of the Akash missile system to friendly foreign nations.

• Armenia Deal: In 2022, Armenia became the first international customer, ordering multiple Akash batteries alongside indigenous radar units.

• International Interest: Multiple nations in Southeast Asia, Africa, and South America have expressed formal interest in acquiring the system due to its cost efficiency compared to Western platforms like Patriot or NASAMS.

Key Facts for Quick Revision

• Development Program: Developed under the Integrated Guided Missile Development Programme (IGMDP) launched in 1983.

• Nodal Agencies: Designed by DRDO; produced by Bharat Dynamics Limited (BDL) as lead integrator and Bharat Electronics Limited (BEL) for radar systems.

• Engine Type: First indigenously produced missile with an integrated ramjet rocket propulsion unit.

• Single-Shot Kill Probability: Evaluated above 88% for single-missile firing, increasing to over 98% with a two-missile salvo.

• User Arms: Deployed extensively along land borders by the Indian Army and at critical air bases by the Indian Air Force.

• Export Milestone: First fully indigenous complex air defence system exported by India to a foreign nation (Armenia).

• Launch Capabilities: Capable of autonomous firing from mobile launchers with 360-degree coverage.