不起飞的“点火发射”怎么做到的？长征十号系列火箭需闯“四道关”

Core Viewpoint - The recent ground test of the Long March 10 series rocket represents a significant milestone in China's space exploration efforts, focusing on the validation of the rocket's propulsion system and its readiness for future missions [1][3]. Group 1: Test Overview - The test is described as a "tethered ignition launch," where the rocket is securely fixed to the test platform to prevent it from taking off [1]. - The Long March 10 rocket's first stage test vehicle has a diameter of 5 meters and a height of 25 meters, generating nearly 1,000 tons of thrust during the ignition test, setting a new record for China's rocket engine testing [1]. - The Long March 10 rocket consists of three modules, with a launch thrust three times that of the recent test [1]. Group 2: Technical Details - To prevent excessive thrust from causing the rocket to detach from the test platform, over 200 bolts were used to securely connect the test vehicle to the platform, ensuring a safe and controlled test [2]. - The test was conducted at the launch site due to the high requirements for the test platform, as there are currently no facilities in China capable of handling a thousand-ton class engine test [3]. - The Long March 10 series is designed for manned lunar exploration and includes two configurations, with specific missions for lunar landing and space station launches [3]. Group 3: Testing Phases - The ignition test is part of a four-step process for the Long March 10 series rocket, which is the largest thrust scale full-system test conducted in China [4]. - The propulsion system is critical for the rocket's payload capacity, flight performance, and mission reliability, with the ignition test aimed at identifying issues during the rocket's development [4]. - The recent tethered ignition test builds on the success of the first dynamic system test conducted in June 2024, which involved parallel ignition of three engines, marking the first step in the testing process [4].