SOURCE: AFI
In a groundbreaking stride toward sustainable aviation, BluJ Aerospace Private Limited announced on March 29, 2025, the successful testing of its Type IV hydrogen storage tank—a pivotal milestone in the development of hydrogen-based flight. This achievement, coupled with multiple successful ground tests of the company’s hydrogen propulsion system, positions BluJ as a frontrunner in the race to decarbonize the aerospace industry and heralds a promising future for hydrogen-powered aircraft.
Central to BluJ’s progress is the Type IV hydrogen storage tank, a cutting-edge design tailored for aviation’s stringent demands. Unlike traditional metal-based tanks, Type IV tanks feature a lightweight polymer liner reinforced with carbon fiber, enabling them to store hydrogen at high pressure while minimizing weight. This balance of strength and efficiency is critical for aerospace applications, where every kilogram impacts fuel economy, range, and payload capacity.
Hydrogen, as a fuel, offers immense potential for aviation due to its high energy density and zero-emission combustion—producing only water vapor as a byproduct. However, storing it safely and efficiently aboard aircraft has long been a technical hurdle. BluJ’s successful test of the Type IV tank demonstrates a viable solution, proving that it can withstand the pressures required for flight while keeping weight low enough to make hydrogen propulsion practical. This milestone brings the company closer to integrating the tank into a functional aircraft system, a key step toward realizing hydrogen-powered flight.
In tandem with the tank testing, BluJ Aerospace has conducted multiple ground tests of its hydrogen propulsion system, showcasing its performance and reliability. These tests, which simulate real-world operating conditions, are a crucial precursor to in-flight demonstrations. The propulsion system, designed to harness hydrogen’s energy for thrust, has performed consistently, reinforcing BluJ’s confidence in its technology.
“We have conducted multiple ground tests of our hydrogen propulsion system, demonstrating its performance and reliability for aerospace applications,” the company stated. “This marks an important step as we work towards a flight demonstration with this system in the near future.” While specifics about the propulsion system—such as its power output or integration details—remain under wraps, the successful tests signal that BluJ is on track to transition from the lab to the skies.
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