乍一听以为是大忽悠，原来真是航天领域的“扫地僧”

Core Viewpoint - The article highlights the significant contributions of Zhao Ruian, a prominent figure in China's aerospace sector, particularly in orbital calculation and optimization, which are crucial for space weaponry and deep space exploration [1][3][16]. Group 1: Orbital Calculation - Orbital dynamics is fundamental to space weaponry, with China's advancements marked by two major leaps: from precise absolute orbits to mastering relative orbits [6][11]. - The initial focus was on ground-to-ground missiles, with early researchers, led by Qian Xuesen, laying the groundwork for orbital calculations necessary for missile accuracy [6][11]. - China's first major success in orbital calculation was the 2007 anti-satellite test, showcasing high precision in predicting and designing absolute orbits [6][8]. Group 2: Orbital Optimization - Orbital optimization is likened to advanced mathematics, focusing on achieving goals with minimal cost and maximum reliability [11][12]. - The Red Flag-29 missile's interception of intercontinental ballistic missiles (ICBMs) exemplifies the power of orbital optimization, allowing for timely interception through calculated trajectories [11][12]. - The Chang'e 6 lunar mission and Tianwen-1 Mars mission further demonstrate China's capabilities in complex orbital maneuvers, showcasing the effectiveness of orbital optimization in achieving multiple objectives in a single mission [12][13]. Group 3: Strategic Implications - The advancements in orbital calculation and optimization are essential for China's strategic capabilities in space, enabling the country to maintain a competitive edge against adversaries [15][16]. - The article contrasts China's methodical approach to space technology with the U.S. "Iron Dome" strategy, emphasizing the importance of solid engineering foundations over mere strategic posturing [15][16]. - Zhao Ruian's work represents a broader tradition in Chinese aerospace, focusing on practical applications of scientific principles to secure national interests in space [16].