SF Prep

DRDO's indigenous High-Altitude Platform reaches 21 km altitude in flight trial

DRDO carried out a successful flight trial of its indigenous High-Altitude Platform (HAPS), a lighter-than-air stratospheric surveillance system that reached 21 km and stayed at 20 km for over 30 minutes, the Defence Ministry said on 6 October 2026.

Summary

The Defence Research and Development Organisation (DRDO) carried out a successful flight trial of its indigenously developed High-Altitude Platform (HAPS), the Ministry of Defence said on 6 October 2026. The experimental flight reached 21 km above mean sea level and remained at 20 km for more than 30 minutes before it was commanded to descend and was recovered. HAPS is a lighter-than-air, long-endurance stratospheric aerial surveillance platform being developed by ADRDE, Agra, and the trial was coordinated with the IAF, CEMILAC, DGCA and the Airports Authority of India.

Key facts

System
High-Altitude Platform (HAPS)
Type
Lighter-than-air, long-endurance stratospheric surveillance platform (airship)
Peak altitude
21 km AMSL
Endurance in trial
Over 30 minutes at 20 km
Developer
ADRDE, Agra (DRDO)
Coordinating agencies
IAF, CEMILAC, DGCA, Airports Authority of India

Practice MCQs 2 questions

Q1

In its flight trial announced in October 2026, DRDO's High-Altitude Platform (HAPS) attained a maximum altitude of:

Show answer

Correct answer: B — 21 km above mean sea level

The experimental flight attained an altitude of 21 km AMSL and stayed at 20 km for more than 30 minutes.
Q2 Advanced

Consider the following statements about DRDO's High-Altitude Platform (HAPS): 1. HAPS is a lighter-than-air, long-endurance stratospheric aerial surveillance platform. 2. HAPS is being designed and developed by ADRDE, Agra. Which of the statements given above is/are correct?

Show answer

Correct answer: C — Both 1 and 2

Both are correct: the release describes HAPS as a lighter-than-air, long-endurance stratospheric surveillance platform being designed and developed by ADRDE, Agra.

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