太空发射系统

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屡次推迟的登月计划可能提前 NASA哪来的自信?
Xin Hua Wang· 2025-09-24 23:28
新华社北京9月24日电 美国国家航空航天局(NASA)23日宣布,"阿耳忒弥斯"登月计划的首次载人绕月飞行任务"阿耳忒弥斯2号"将于2026年4 月执行,并可能提前到2026年2月。此前,NASA屡次宣布该计划延迟,这次却宣称"可能提前",NASA哪来的自信? 提前的前提是安全 2024年12月,NASA将"阿耳忒弥斯2号"和"阿耳忒弥斯3号"任务再次分别推迟至2026年4月和2027年年中。NASA当时表示,这一决定是在对"猎户 座"飞船的隔热罩问题进行调查后做出的。调整后的任务时间表能够预留更多时间解决"猎户座"飞船的环境控制和生命支持系统相关问题。 登月计划难度重重 据NASA官网介绍,4名宇航员将执行"阿耳忒弥斯2号"任务并返回,测试美国新一代登月火箭"太空发射系统"和"猎户座"飞船的性能,验证"猎户 座"飞船的关键生命支持系统能在未来长时间任务中向宇航员提供生命保障,为下一步登月计划做好准备。 这是2007年12月6日在美国肯尼迪航天中心一处建筑物上拍摄的美国国家航空航天局的标志。新华社/法新 "阿耳忒弥斯"是美国政府2019年宣布的新登月计划。2022年11月16日,执行"阿耳忒弥斯1号"无人绕月 ...
美国航天系统,降本增“笑”!
Guan Cha Zhe Wang· 2025-08-21 06:35
Group 1 - The core argument of the article discusses the impact of budget cuts and personnel reductions in the U.S. military and space sectors, particularly under the Trump administration's "cost-cutting" initiatives, which have led to significant operational challenges and errors in the 18th Space Defense Squadron [1][6][12] - The 18th Space Defense Squadron, a key unit under the U.S. Space Force, has seen a reduction of up to 20% in personnel, which has directly affected its ability to track and catalog space objects accurately [2][6][10] - The budget cuts have resulted in the cancellation of several important space science projects and a significant reduction in funding for NASA and NOAA, leading to concerns about the future of U.S. space exploration and climate monitoring capabilities [12][14][23] Group 2 - The article highlights specific instances of operational failures within the 18th Space Defense Squadron, including incorrect tracking data and misidentification of satellites, which have been exacerbated by staff reductions [6][10][11] - The budget proposal from the Office of Management and Budget (OMB) has been criticized for its drastic cuts, including the termination of ongoing projects and significant reductions in funding for future missions, which could hinder scientific progress [12][14][19] - The article notes that the NOAA has also faced severe budget cuts, leading to layoffs and the potential discontinuation of critical environmental monitoring programs, raising alarms about the long-term implications for climate science [16][23]
六月试车再异常,美国登月又要推迟了?
Guan Cha Zhe Wang· 2025-06-30 01:14
Core Viewpoint - Northrop Grumman's BOLE booster test experienced a significant anomaly during its ground test, raising concerns about the performance and safety of the new solid rocket technology [1][3][7]. Group 1: Test Details - The BOLE booster underwent a ground test called "Demonstration Motor-1" on June 26, 2023, at a facility in Utah, aiming for a 140-second ignition [1]. - The test included 763 measurement points to monitor engine performance and a CO2 extinguishing system for safety [1][3]. - An anomaly occurred at 101 seconds into the test, where the throat of the nozzle burned through, leading to a rupture and flame ejection [1][3]. Group 2: Technical Specifications - BOLE is designed to replace the current Space Launch System's solid rocket boosters, utilizing advanced T1100 carbon fiber casing and hydroxyl-terminated polybutadiene solid propellant [3][5]. - The new design aims to produce over 1800 tons of thrust, improving the SLS's lunar payload capacity to over 46 tons [3][5]. - The test used IM7/T300 carbon fiber for the casing, with plans to switch to T1100 in future tests [5]. Group 3: Historical Context and Comparisons - This is not the first anomaly for Northrop Grumman; a similar issue occurred during the 2019 ground test of the Castor-600 solid rocket engine, where the nozzle ruptured due to pressure changes [9][12]. - The BOLE booster is seen as a larger version of the OmegA rocket, which was previously abandoned but provided valuable technology for BOLE's development [12]. Group 4: Future Implications - Despite the anomaly, the issues are not expected to derail the U.S. lunar return plans, although the low production rate of the SLS may delay future missions [18]. - The BOLE booster is set to be integrated into the SLS for its ninth mission, with ongoing tests planned to assess performance under various environmental conditions [5][18].