Indian startup tests high-pressure balloon, aims to reach edge of space

The balloons at high altitude can provide internet or telecom connectivity to remote areas, monitor disaster zones from above, conduct atmospheric and climate research.

In Short

• Red Balloon Aerospace tested India's first super-pressure balloon in Vijayawada
• Multiple aerospace companies flew payloads on the balloon successfully
• Main launch planned later in 2026, targeting 25 km altitude in stratosphere

On May 15, a corner of Indira Gandhi Stadium in Vijayawada became the site of a significant moment for Indian aerospace as Hyderabad-based startup Red Balloon Aerospace (RBA) successfully conducted a tethered trial of what it describes as India's first super-pressure balloon.

A super-pressure balloon is a specialised high-altitude balloon designed to float at the edge of the stratosphere, roughly 25 kilometres above the Earth's surface, for extended periods without deflating or losing altitude.

The trial was a controlled, ground-anchored test, meaning that the balloon was kept on a leash rather than allowed to fly freely. The test was designed to validate launch procedures, ground crew readiness, and the overall systems before the real launch.

"This tethered trial was executed with the rigour and precision we bring to every phase of this programme. Everything performed as planned. The main launch is imminent, and today has strengthened our confidence," said Dr CVS Kiran, co-founder and CEO of Red Balloon Aerospace. "This was a crucial step towards successful VISTA platforms for the near-space infrastructure Red Balloon Aerospace is creating."

MORE THAN A TEST FLIGHT

What made the Vijayawada trial notable was not just the balloon itself.

The event also served as a payload integration platform, meaning several other aerospace companies flew their own instruments and sensors aboard the balloon during the test.

All of those payload missions were completed successfully, signalling that Red Balloon Aerospace is not only developing its own technology but is positioning itself as a launch partner for the wider Indian aerospace industry.

"Our VISTA platforms (SPBs) are the building blocks of our HELIX platforms (Airships). Every step progresses towards establishing lighter-than-air technology for a plethora of applications, bridging the gap between the airspace and space," said Sireesh Pallikonda, co-founder and COO of Red Balloon Aerospace.

WHAT'S NEXT?

The tethered trial has set the stage for Red Balloon Aerospace's main launch, planned for the second quarter of 2026, which will attempt to send the balloon all the way to its target altitude of approximately 25 kilometres, deep into the stratosphere and far beyond the reach of conventional aircraft.

At that altitude, super-pressure balloons can serve as persistent, low-cost platforms for a wide range of applications. They can provide internet or telecom connectivity to remote areas, monitor disaster zones from above, conduct atmospheric and climate research, and support earth observation missions.

Unlike satellites, which orbit at much greater heights and cost vastly more to launch, stratospheric balloons can be deployed relatively quickly and recovered after use.

India currently has limited indigenous capability in this space, making Red Balloon Aerospace's programme one of the few realistic and feasible domestic efforts to establish a foundation in this space using homegrown technology.

- Ends