Unmanned Aircraft (NJK)

The 20-Year-Old Teaching Drones to Fly Like Albatrosses

Somewhere over the Bay of Bengal in early August 2026, an unmanned aircraft skimmed less than a metre above the waves, carving seven tight loops in a row at speeds past 100 km/h — all without a pilot, and without burning much energy to stay up. That short flight is the clearest proof yet that a Bengaluru startup called Alteon, founded by 20-year-old Samay Sanghvi, might be onto something genuinely new in aviation.

The Problem Every Aircraft Shares

Since the earliest days of flight, every aircraft has faced the same limitation: eventually it has to land. Fuel runs out, batteries drain, and even the most advanced solar-powered planes still need clear skies and daylight to keep going. Sanghvi's company is trying to sidestep that constraint entirely by borrowing a trick from nature.

Flying Like an Albatross

Albatrosses can cover 800 to 1,000 kilometres a day over open ocean without flapping their wings. They do it through a technique called dynamic soaring — repeatedly diving from a layer of fast-moving air into a slower layer near the water's surface, then climbing back up into the faster air above. Each cycle harvests a small amount of energy from the difference in wind speed between the two layers, letting the bird trade altitude and direction for propulsion instead of muscle power.

Alteon's aircraft is designed to do the same thing mechanically. It's a small fixed-wing drone, roughly three metres in wingspan, engineered to autonomously perform the same diving-and-climbing pattern just above the ocean surface. The August test — seven consecutive loops, sustained near-surface flight, sub-metre altitude control at high speed — validated that the aircraft can execute the maneuver reliably and autonomously, which is a serious feat of navigation and control on its own.

From Crashed RC Planes to a Funded Startup

Sanghvi's path here didn't go through a conventional engineering pipeline. He started building radio-controlled aircraft straight out of high school in 2023, teaching himself by crashing early models and rebuilding them, well before formally founding Alteon in 2025. Today the company has grown to a team of around 20 people, operating out of a 10,000-square-foot facility in Bengaluru, building four to five test aircraft a week and racking up more than 200 test flights in a single recent month.

That momentum recently translated into funding: Alteon closed a $2.5 million pre-seed round led by Lachy Groom — the San Francisco investor and former early Stripe employee, also known as a co-founder of Physical Intelligence — with participation from Together Fund, alongside earlier backing from Emergent Ventures and 1517. Groom has said he decided to invest within the first half hour of meeting Sanghvi, describing the effort as ambitious but backed by a team he believes can solve it.

What Comes Next: Energy-Neutral Flight

The August loop test is a milestone, not the finish line. Alteon's next target is what Sanghvi calls "energy-neutral dynamic soaring" — flying with the propulsion system switched off entirely, staying aloft purely on energy pulled from the wind gradient. Future versions of the aircraft are planned to use their propellers as small turbines, converting harvested wind energy into electricity to recharge onboard batteries mid-flight, extending endurance indefinitely.

The eventual goal is audacious: aircraft that can remain airborne for more than a year at a stretch. For context, the current record for continuous flight is 67 days, set by Airbus subsidiary AALTO's stratospheric solar aircraft Zephyr in 2025. Alteon isn't just trying to beat that number — it's aiming to change the category entirely, using ocean wind instead of sunlight or fuel.

Why It Matters

If it works, the first application is maritime surveillance — giving governments continuous, low-cost visibility over their own waters to track illegal fishing, smuggling, and other activity, at a fraction of the cost of ships or satellites. Dr. Bharath Swaminathan, who studied dynamic soaring stability during his PhD at IIT Madras, has called the underlying physics well established and the effort commendable, while cautioning that even keeping an aircraft up for several days this way would be a major achievement — real-world wind shear and turbulence are far messier than large-scale forecasts suggest, and some problems will only surface in flight testing.

That mix of validated physics and unsolved engineering is exactly where Alteon is placed right now: a young founder, a small aircraft, and a genuinely difficult problem that nature already solved — if the machine can catch up to the bird.

Sources: TechCrunch, Business Standard, Inc42, Technology.org, DroneXL, and Indian Defence News reporting on Alteon's August 2026 test flight and pre-seed funding round.