Core Insights - The development of aircraft engines is a complex and lengthy process, requiring high precision in materials, manufacturing, system integration, and certification [1] - China has made significant advancements in aircraft engine technology, becoming the fourth country capable of independently developing large bypass turbofan engines [8] - Despite progress, China still lags behind Western countries in certain performance metrics and certification processes for civil aviation engines [9][12] Group 1: Aircraft Engine Development - Aircraft engines are critical components that must operate reliably under extreme conditions, necessitating interdisciplinary technology integration [1] - The F135 engine for the F35 fighter jet took 13 years from project initiation to the first production delivery, highlighting the lengthy development cycle [1] - The successful development of the "涡扇20" engine marks a significant milestone for China, allowing it to produce all major categories of advanced aircraft engines [8] Group 2: Current Capabilities and Achievements - China has developed several advanced engines, including the "涡轴9" and "涡扇10," which are used in various military helicopters and fighter jets [2][3][4] - The "涡扇20" engine's debut at the 2025 military parade signifies China's entry into the elite group of countries capable of producing large bypass turbofan engines [8] - The establishment of a complete aircraft engine industry system in China is a foundational step towards enhancing its global standing in aviation manufacturing [13] Group 3: Challenges and Market Position - China’s military engines are approaching Western standards in thrust and thrust-to-weight ratios, but still face challenges in maintenance and longevity [9] - In the civil aviation sector, China’s products are still in testing phases, while Western engines dominate the market with over 80% share [9] - The certification process for civil engines remains a hurdle, as it relies heavily on Western standards, necessitating the development of indigenous certification frameworks [12]