Why in News?

  • India’s Defence Research and Development Organisation (DRDO) is preparing for the first test of “Dhvani”, a next-generation hypersonic glide vehicle (HGV).
  • If successful, Dhvani will place India among an elite group of countries — US, Russia, and China — that possess hypersonic missile capability, representing a major leap in India’s strategic deterrence and defence technology.

KEY FEATURES OF DHVANI

Parameter Details
Type Hypersonic Glide Vehicle (HGV)
Speed > Mach 5 (i.e., > 6,174 km/h)
Range Estimated 6,000 to 10,000 km
Launch Platform Ballistic missile (likely derived from Agni-series)
Flight Profile Launched to high altitude, then glides at hypersonic speed with maneuverability
Length & Width ~9 meters long, 2.5 meters wide
Stealth Features Blended wing-body design, reduced radar cross-section
Thermal Shielding Ultra-high-temperature ceramic composites (withstand 2,000–3,000°C during re-entry)
Expected Deployment By 2029–30, if trials succeed

WHAT MAKES DHVANI DIFFERENT?

  • Speed + Maneuverability: Unlike conventional ballistic or cruise missiles, Dhvani can alter course mid-flight, making it hard to detect, track or intercept.
  • Stealth Geometry: Angled surfaces and smooth contours minimize radar signature.
  • Thermal Resistance: Advanced ceramics protect it during reentry — a key requirement at hypersonic speeds.
  • Indigenous Tech: Developed entirely by DRDO, showcasing self-reliance in critical military tech.
BACKGROUND TECHNOLOGY Dhvani builds on earlier DRDO projects like:
  • HSTDV (Hypersonic Technology Demonstrator Vehicle): Successfully tested; validated scramjet propulsion and thermal shielding.
  • Agni series missiles: Provide the launch platform and guidance systems.

GLOBAL CONTEXT

Country

 Weapon

Status
Russia Avangard Operational
China DF-ZF Operational
USA Dark Eagle, HACM Under development
India Dhvani (HGV) Test phase
India's
Dhvani aims to match or surpass global counterparts in range, stealth, and precision, but with homegrown technology.

STRATEGIC IMPORTANCE

1. Credible Nuclear Deterrent:

  • Hypersonic HGVs cannot be intercepted by current missile defence systems.
  • Enhances India’s second-strike capability, strengthening nuclear doctrine.

2. Regional Power Projection:

  • Creates a technological gap with adversaries, especially Pakistan, whose missile defences are outdated.
  • China cannot ignore Dhvani’s capability — rebalances regional military asymmetries.

3. Make in India in Defence:

  • Entirely indigenous R&D shows success of India’s Atmanirbhar Bharat initiative in critical tech sectors.
  • Reduces reliance on imports in high-tech weapons systems.

4. Changing Nature of Warfare:

  • Represents shift from traditional ballistic missiles to maneuverable, hypersonic delivery systems.
  • India is no longer catching up — it's shaping future warfare trends.

CONCLUSION

Dhvani is not just a missile — it is India's message to the world that it is ready to lead in next-gen strategic technology. As a symbol of scientific advancement, national security, and self-reliance, Dhvani reflects India’s emergence as a technologically sophisticated global power in the evolving geopolitics of deterrence and defence.