HELINA / Dhruvastra Anti-Tank Missile

HELINA—an acronym for Helicopter-launched NAG—and its Indian Air Force variant Dhruvastra are air-launched members of the Nag third-generation anti-tank guided missile (ATGM) family developed by the Defence Research and Development Organisation (DRDO). The programme traces to the Integrated Guided Missile Development Programme (IGMDP) sanctioned in 1983 under Dr. A.P.J. Abdul Kalam, which committed India to indigenous development of five missile systems, of which Nag was the anti-tank component. The ground-launched Nag matured into the NAMICA (Nag Missile Carrier) tracked platform, while the helicopter-borne derivative was conceived to give Army Aviation and the IAF a standoff tank-killing capability launchable from the indigenous HAL Advanced Light Helicopter (ALH) Dhruv and its weaponised Rudra and Light Combat Helicopter (LCH) Prachand derivatives. Development was led by the Research Centre Imarat (RCI) in Hyderabad, the DRDO laboratory specialising in missile guidance and avionics.

The defining technical attribute of the system is its fire-and-forget guidance, achieved through an imaging infrared (IIR) seeker operating in the lock-on-before-launch (LOBL) mode. Before launch, the helicopter's targeting system designates the target; the missile's seeker acquires and locks the thermal signature; once fired, the missile homes autonomously, requiring no further input from the launch platform. This frees the helicopter to take evasive action or re-engage immediately after release, a decisive survivability advantage over wire-guided second-generation missiles. The missile carries a tandem-shaped charge high-explosive anti-tank (HEAT) warhead designed to defeat explosive reactive armour (ERA), with the leading charge detonating the reactive tiles and the main charge penetrating the base armour. Its quoted range is approximately 7 kilometres in the air-launched configuration, exceeding the roughly 4-kilometre reach of the ground-launched Nag, owing to the altitude and forward velocity imparted by the launching aircraft.

The system supports both LOBL and, in development, lock-on-after-launch (LOAL) profiles, the latter permitting indirect or top-attack trajectories against defiladed targets. HELINA is the designation adopted by the Indian Army for integration with the Rudra and Prachand, while Dhruvastra is the name given to the Indian Air Force configuration. Both share the same airframe, IIR seeker and warhead, differing principally in platform integration and operational ownership. The missiles are mounted on twin-tube launchers on the helicopter's stub wings, and the integration includes the aircraft's electro-optical sighting and fire-control system for target designation and seeker cueing.

Flight trials advanced significantly through the late 2010s. In July 2018, DRDO conducted successful trials of Dhruvastra in the desert ranges of Pokhran, Rajasthan. A series of validation flights from the ALH platform followed, and in February 2021 the Defence Acquisition Council and successive trials at Pokhran demonstrated HELINA against both static and moving targets in direct-hit and top-attack modes, including high-altitude trials conducted in the integration with the Light Combat Helicopter. The LCH Prachand was formally inducted into the Indian Air Force in October 2022 at Jodhpur, with the Army receiving its own units, providing the principal launch platform for the air-launched Nag derivatives. These developments form part of the Atmanirbhar Bharat (self-reliant India) defence indigenisation drive overseen by the Ministry of Defence.

The HELINA/Dhruvastra must be distinguished from adjacent systems in the Indian inventory. The ground-launched Nag uses a NAMICA carrier and a shorter range, and its ManPortable variant (MPATGM) is a lighter, infantry-carried third-generation missile also under DRDO development. It differs fundamentally from the Israeli Spike ATGM, batches of which India has procured as an interim and complementary capability, and from older wire-guided systems such as the French Milan-2T and Russian Konkurs, both of which require the operator to keep the target in the sight throughout flight (SACLOS guidance) and are second-generation by classification. The "third-generation" label specifically denotes the fire-and-forget autonomy that HELINA possesses and these legacy systems lack.

Controversies and edge cases centre on procurement timelines and seeker performance in high-temperature desert environments, where thermal clutter and target-background contrast can stress an IIR seeker. The protracted gestation of the Nag family—spanning more than three decades from IGMDP sanction—has drawn parliamentary and Comptroller and Auditor General scrutiny regarding cost and schedule, a recurring theme in Indian indigenous defence acquisition. Questions also persist over production scale-up and the pace of replacing imported ATGMs. Recent developments include continued user trials with the Indian Army and Air Force and movement toward limited series production, alongside the parallel maturation of the man-portable MPATGM, which together aim to give India a domestically produced anti-armour capability across infantry, mechanised and rotary-wing platforms.

For the civil-services aspirant and the working defence analyst, HELINA and Dhruvastra are emblematic of three examinable themes in General Studies Paper III: indigenous defence technology under DRDO and the IGMDP legacy, the strategic logic of self-reliance through Atmanirbhar Bharat, and the technological taxonomy of guided munitions. The precise facts most frequently tested are the fire-and-forget IIR seeker, the tandem HEAT warhead defeating reactive armour, the roughly 7-kilometre air-launched range, the Rudra/Prachand launch platforms, and the distinction between the Army's HELINA and the Air Force's Dhruvastra designations. Mastery of these specifics, rather than generic praise of indigenisation, distinguishes a strong answer.