China's 4,000-meter-class airborne wind power system completes first urban test flight

China's domestically developed S4000 Stratosphere Airborne Wind Energy System (SAWES) successfully completed a test flight in Yueyang City, central China's Hunan Province, on Friday, marking its first flight test in an urban setting. The world's first of its kind, the S4000 is designed to operate at altitudes of up to 4,000 meters and has a design life of up to 20 years. #energy #wind #flight #windenergy #urban #coolchina 📺 Subscribe to our YouTube channel and stay updated with our latest analysis and interviews:👇 https://www.youtube.com/channel/UCgrNz-aDmcr2uuto8_DL2jg 👈 Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvnews-app/id922456579?l=zh&ls=1&mt=8 Download our APP on Google Play (Android): https://play.google.com/store/apps/details?id=com.imib.cctv For more: https://news.cgtn.com/news/2026-11-07/China-s-4-000-meter-class-airborne-wind-power-system-completes-first-urban-test-flight-1RSkp1XdvS8/p.html Most watched videos: Impossible Challenge: 30 seconds to count banknotes BLINDFOLDED https://www.youtube.com/watch?v=ZmP_Ybj-jws Impossible Challenge: Gymnastics Boy Arat Hosseini from Iran! https://www.youtube.com/watch?v=8sxX--U4c8w Impossible Challenge: How to calm babies in 5 seconds? https://www.youtube.com/watch?v=kR3q9sXM7WA