An airship at 21 km and a jump over Ladakh: what DRDO's two tests prove, and what they don't yet

The problem: watching for long, from high up

Watching a wide area for a long time is hard. An aircraft can circle only until its fuel runs low, and then it has to land.

An airship floats because it is lighter than air, so it does not burn fuel just to stay up. Park one in the stratosphere, roughly twice as high as airliners fly, and in principle it could watch a wide area for a very long time.¹

That is the goal of DRDO's High-Altitude Platform. In 2025 the Defence Minister said such an airship would improve India's earth observation and surveillance, and put India among the few countries with such indigenous systems.³

The first try: 17 km

On 3 May 2025 DRDO flew its first stratospheric airship from Sheopur in Madhya Pradesh. It reached about 17 km, in a flight of about 62 minutes, testing how the envelope holds its pressure and how it can be deflated in an emergency.³⁴

6 October: 21 km

Seventeen months later the ministry reported the next step. The airship climbed to 21 km above sea level and held at 20 km for more than 30 minutes before it was brought down, recovered and its data analysed.¹

Live video and data streamed to the ground throughout. On board were motion sensors, a GPS receiver, cameras and an altitude control system. The flight needed the Air Force, airworthiness and aviation regulators and the Airports Authority to work together.¹

But half an hour is not long endurance

The minister called the flight an important milestone towards a long endurance stratospheric airship. That wording is honest. The aim is a platform that stays up for very long periods. Half an hour at altitude has not shown that yet.¹

The other end of the sky: a jump over Ladakh

The second release, from the same lab, the Aerial Delivery Research and Development Establishment in Agra, was about getting soldiers down rather than eyes up.¹²

At high altitude the air is thin. The ministry says static line jumps there are complex and inherently risky because of the very high opening shock and speed of descent. A static line is a cord tied to the aircraft that pulls the parachute open automatically.²

Over the Mudh drop zone at Nyoma in Ladakh, the first live jump with the Advanced High-Altitude Parachute was made at 16,000 feet. The canopy opened at 15,500 feet and the landing was at 13,700 feet. The system is rated up to 18,000 feet.²

It is an Indian supply chain from end to end: made by the Ordnance Parachute Factory in Kanpur, inspected by DGAQA and certified by CEMILAC's centre in Kanpur.²

What to watch next

For the airship, longer flights and real surveillance payloads. For the parachute, more live jumps and production orders. BusinessLine and The Week reported both trials from the ministry's figures.⁵⁶