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Category — GS Paper 3 ///Published — 2026-10-10 ///Exam — Both Prelims and Mains ///Tags — Science & Technology, Defence, Space Technology ///Category — GS Paper 3 ///Published — 2026-10-10 ///Exam — Both Prelims and Mains ///Tags — Science & Technology, Defence, Space Technology ///

News · GS Paper 3

DRDO Flight-Tests Indigenous High-Altitude Platform System

DRDO successfully flight-tested an indigenously developed High-Altitude Platform System (HAPS), which reached 21 km altitude and remained at 20 km for over 30 minutes. Developed by ADRDE, Agra, the lighter-than-air platform aims to bridge the gap between aircraft and satellites for persistent surveillance and communications. The test underscores India's growing capabilities in stratospheric platforms and indigenous aerospace under Aatmanirbhar Bharat.

2026-10-10

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Introduction

The Defence Research and Development Organisation (DRDO) successfully flight-tested an indigenously developed High-Altitude Platform System (HAPS).
The test marks a significant step towards developing a long-endurance stratospheric surveillance platform.

Key Facts

Altitude achieved: The experimental platform reached 21 km above mean sea level and remained at 20 km for over 30 minutes.
Developer: Aerial Delivery Research and Development Establishment (ADRDE), Agra, a DRDO laboratory, developed the lighter-than-air platform for sustained stratospheric operations.
Technology: The platform carried an Inertial Measurement Unit (IMU), GPS receiver, onboard cameras, and an altitude-control mechanism for navigation, monitoring and control.
Real-Time Monitoring: Video footage and flight parameters were continuously transmitted to the Ground Control Station, demonstrating the intended flight performance.
Trial and Recovery: The platform was commanded to descend and successfully recovered, with flight-performance data subsequently analysed for further development.
Institutional Coordination: The trial involved the Indian Air Force (IAF), Centre for Military Airworthiness and Certification (CEMILAC), Directorate General of Civil Aviation (DGCA), Airports Authority of India (AAI) and other civil authorities.

About HAPS

A High-Altitude Platform Station (HAPS) is a station carried by an aerial platform, such as an unmanned aircraft, airship or balloon, operating in the stratosphere.
The International Telecommunication Union (ITU) defines HAPS as stations located on objects at altitudes of 20–50 km, positioned at specified points relative to Earth.

Strategic Significance

HAPS can bridge the operational gap between aircraft and satellites, enabling:
Persistent surveillance
Intelligence gathering
Earth observation
Communications
Disaster response
Its recoverability for maintenance and upgrades enhances operational flexibility.
Strengthens indigenous aerospace capabilities under Aatmanirbhar Bharat.

Conclusion

The successful HAPS test positions India among a select group of nations developing stratospheric platforms for dual-use (civil and military) applications. It reinforces India's push for self-reliance in defence technology.