Submission + - China Conducted Test Flight of Kerosene-based Hypersonic Vehicle (scmp.com)
hackingbear writes: SCMP reported that, in a groundbreaking demonstration of technological prowess, China's Feitian 2 hypersonic vehicle successfully completed its test flight, showcasing advanced capabilities in seamless mode transitions and fuel efficiency, marking a significant leap forward in aerospace engineering. China's Northwestern Polytechnical University (NPU) said in a statement that the test represented the first successful acquisition of real-flight data for a rocket-based combined cycle (RBCC) engine using a kerosene-hydrogen peroxide propellant, proving key capabilities, including variable-geometry intake operation, thrust-varying acceleration and autonomous flight with variable angle of attack. The RBCC engine represents a revolutionary concept, integrating the benefits of traditional rocket engines and air-breathing ramjets within a single system. Its core objective is to maximize the use of atmospheric oxygen as the oxidizer during atmospheric flight, drastically reducing the oxidizer weight the vehicle must carry, thereby significantly boosting the payload capacity and fuel efficiency. Although it is less efficient at converting propellant to thrust than liquid hydrogen, the mixture of kerosene-hydrogen peroxide eliminates the need for complex cryogenic systems, allowing pre-fuelling and long-term standby readiness. The successful demonstration of RBCC engine capabilities and autonomous flight systems suggests that hypersonic vehicles could soon become a reality for both military and civilian applications. Moreover, the test evaluated the vehicle’s autonomous flight capabilities, enabling it to adjust its angles of attack based on mission parameters and environmental conditions. The ability to smoothly transition between flight modes and adapt to environmental conditions opens new possibilities for rapid global travel and advanced defense systems. Notably, NPU is subject to US sanctions and requires specific US Commerce Department approval to buy sensitive US-made research equipment and components, while Chinese authorities publicly accused the US National Security Agency’s (NSA) carrying out extensive cyberattacks against the university.
