Lachy Groom backs Indian startup aiming to keep aircraft aloft for a year
Solo investor Lachy Groom has backed Alteon, a Bengaluru-based startup founded by 20-year-old Samay Sanghvi, which is attempting to keep an autonomous aircraft airborne for more than a year by harvesting energy from ocean winds. The startup uses "dynamic soaring", a technique inspired by albatrosses, in which a fixed-wing aircraft repeatedly moves between air layers travelling at different speeds to extract energy, potentially removing the need to carry conventional fuel or battery power. If successful, this could enable long-duration uses such as maritime surveillance, giving governments continuous real-time visibility of activity in their waters.
Alteon raised $2.5 million in a pre-seed round led by Groom, with participation from Together Fund, and plans to build an aircraft with roughly a three-metre wingspan that flies close to the ocean's surface to gain energy from wind shear, eventually using its propellers as turbines to recharge onboard batteries. The company has already tested its autonomous flight system over the Bay of Bengal, completing seven O-shaped cycles at over 62 miles per hour within one metre of the water. However, it has not yet proven sustained flight from harvested energy alone, and outside experts, including aerospace researchers with backgrounds at MIT and IIT Madras, caution that reliably extracting enough energy from turbulent, unpredictable real-world winds remains a much harder and unproven challenge.
In short
- Lachy Groom leads $2.5m pre-seed round in Indian aviation startup Alteon
- Alteon aims for year-long flight via wind-powered "dynamic soaring"
- Experts say sustained energy harvesting from ocean winds remains unproven
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
If Alteon can reliably harvest energy from wind shear, long-endurance aircraft could provide continuous maritime monitoring without frequent refuelling or battery swaps. Its successful low-altitude flight tests and the backing it has attracted offer a basis for pursuing the idea, which could help governments track activity across large ocean areas.
The case against
The key capability remains unproven: Alteon has yet to show sustained flight powered by harvested energy alone. Turbulent, changing winds may make it difficult to collect enough energy reliably, so claims of year-long flight and its surveillance benefits remain speculative until the system is demonstrated in real-world conditions.
Explained simply
Albatrosses can stay aloft for long periods by using differences in wind speed above the sea to gain energy. Alteon, a Bengaluru startup, is trying to use the same principle, called dynamic soaring, with a small autonomous aircraft that flies close to the ocean.
The company was founded by Samay Sanghvi and backed by investor Lachy Groom. It hopes to build an aircraft that can draw energy from ocean winds and keep flying without regular refuelling or charging.
Long-endurance aircraft could be used for tasks such as monitoring activity at sea. Alteon has tested its flight system over the Bay of Bengal, but has not yet shown that the aircraft can stay aloft using harvested wind energy alone.
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