Alteon, led by 20-year-old Samay Sanghvi, is developing autonomous aircraft with innovative wind energy harvesting technology.
The ambition to extend aircraft flight duration beyond conventional limits has gained traction, particularly with the recent funding of Bengaluru-based startup, Alteon. Founded by the visionary 20-year-old Samay Sanghvi, the company aims to develop autonomous aircraft capable of flying for more than a year by harnessing energy from ocean winds.
Prominent investor Lachy Groom has taken a keen interest in Alteon, leading a pre-seed funding round that raised $2.5 million alongside contributions from Together Fund. This early investment reflects Groom's belief in the potential of the alphabet-despite-mixed-quarterly-results-and-rising-ai-costs/">innovative technology that the startup is developing. Impressed by Sanghvi's dedication, Groom decided to back the venture just 30 minutes into their first discussion.
Conventional aircraft rely heavily on fuel or rechargeable batteries for extended flight, creating significant limitations in both cost and operational ability. Alteon's approach challenges this paradigm by designing a compact, fixed-wing aircraft capable of drawing energy from the wind during autonomous flight.
By implementing a technique known as dynamic soaring—a method observed in albatrosses that exploit different wind layers—Alteon's aircraft will potentially gain energy from wind shear above the ocean. This maneuver involves flying between air currents traveling at varying speeds, allowing the aircraft to harness kinetic energy from its environment.
“Once you build airplanes that can stay in the air for more than a year, there are millions of things you can do with them,” said Sanghvi during a recent interview with TechCrunch. The startup intends to initially utilize its technology for maritime surveillance, providing governments with crucial real-time insights into activities in their territorial waters.
Alteon is developing an aircraft with an approximate wingspan of three meters, designed to operate at low altitudes over ocean surfaces. The aircraft will ascend and turn through faster air, cycling through layers of wind to maximize energy gain. Ultimately, the team aspires to utilize the aircraft’s propellers as turbines that can convert harvested wind energy into usable electrical power to recharge onboard batteries.
While promising, Alteon has yet to demonstrate the capacity for sustained flight through dynamic soaring alone. Recently, the startup conducted autonomous flight tests over the Bay of Bengal, where the aircraft completed seven cycles, reaching speeds of over 100 kilometers per hour while flying within one meter of the water's surface. This initial step marks a significant leap but underscores the challenges that lie ahead.
The next significant target for Alteon is achieving what Sanghvi terms “energy-neutral dynamic soaring.” This advancement would entail the aircraft maintaining flight without the need for propulsion by continuously harvesting sufficient energy from ambient winds.
Dr. Gabriel Bousquet, an expert in aerospace and robotics, lends insight into the challenges of this innovative approach. He highlights that while the low-altitude tests yielded “promising results,” the major hurdle remains the ability to reliably extract energy from dynamic wind patterns, a requirement for prolonged flights.
As Alteon moves forward, safety remains a critical concern. Operating at low altitudes to capture energy introduces significant challenges such as turbulence, ocean waves, rain, aerial spray, and varying light conditions. These factors necessitate continuous adjustments by the aircraft to maintain stability and safety during flight.
Dr. Bharath Swaminathan, who specializes in the physics of dynamic soaring, recognizes the established science behind the concept yet cautions that localized wind conditions can be highly unpredictable. This unpredictability presents formidable challenges to the aircraft's design and operational protocols, which must evolve based on extensive real-world testing.
“Keeping an aircraft airborne for several days using dynamic soaring would be a huge step and a major achievement,” said Swaminathan. His views echo the sentiments shared by Groom, who acknowledges the inherent risks involved in such an ambitious endeavor. "Ambitious problems are always going to come with risks," he advised. However, Groom is confident in Sanghvi and his team’s capacity to navigate these complexities.
Sanghvi's journey towards building Alteon began shortly after graduating high school in 2023. His initial experiments involved constructing radio-controlled aircraft—many of which met unfortunate fates through crashes. Over time, these trials equipped him with invaluable insights into aerodynamics and aircraft design.
By 2025, Sanghvi officially founded Alteon, with early financial support from Emergent Ventures and 1517. Today, the startup boasts a dynamic team of 20 experts operating out of a 10,000-square-foot facility in Bengaluru. With a production rate of four to five aircraft weekly, Alteon reported over 200 test flights conducted within the last month, each contributing crucial data toward refining their technology.
The rise of Alteon exemplifies how youthful creativity, coupled with ambition, can lead to groundbreaking advancements in aviation technology. As the company pushes forward, the aviation landscape may soon experience transformative shifts in how we approach flight duration and energy sourcing.
The successful implementation of Alteon’s aircraft could redefine the norms of aerial operations, particularly in fields like environmental monitoring, search and rescue missions, and maritime surveillance. As the company prepares for its next phase of testing, there is cautious optimism about the broader implications of their research.
With the support of investors like Lachy Groom, Alteon is set to explore uncharted territories of aerodynamics and renewable energy. The outcomes of their rigorous testing will be critical not only to the startup's future but also in shaping a new era of sustainability in aviation.
To keep an aircraft aloft for an extended period would mark a paradigm shift, encouraging further exploration and innovation in the field. The coming months will be pivotal as Alteon strives to achieve its ambitious goals and realize its vision for a new kind of flight.