China's Hypersonic Wind Tunnel Leaves America In The Dust
bgr.com • • general
Key Points:
- China’s JF-22 wind tunnel, operational since May 2023, is the world’s fastest, capable of simulating hypersonic speeds up to Mach 30, significantly surpassing the U.S. LENS II tunnel, which reaches only Mach 7.
- The tunnel, 167 meters long and 4 meters in diameter, uses chemical explosions instead of mechanical compressors to generate hypersonic conditions, producing up to 15 gigawatts of power—about 70% of the capacity of the Three Gorges Dam.
- This advanced capability allows China to accelerate the development of hypersonic flight systems, including potential hypersonic missiles and spacecraft re-entry simulations at speeds exceeding those of NASA’s space shuttle program.
- While the JF-22 represents a major technological leap, concerns remain about the air chemistry effects of chemical explosions and how accurately they replicate real flight conditions compared to traditional wind tunnels.
- The U.S. currently relies more on digital simulations and lower-speed wind tunnels for hypersonic research, and it remains uncertain if or when it will develop physical testing facilities comparable to China’s JF-22.
