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美国纽约州东奥罗拉——穆格公司(Moog Inc.,NYSE: MOG.A/MOG.B)日前迎来一个特殊节点:其演进型次级载荷适配器(ESPA)环完成关键设计评审已整整25年。2001年1月18日,这项由政府与产业界联合推动的技术通过关键设计评审,此后彻底改变了航天发射的游戏规则——多颗卫星共享一次火箭发射成为可能,商业、政府和国防任务的入轨门槛显著降低。
从闲置空间到轨道革命:ESPA的技术逻辑
ESPA的研发始于1999年,由美国空军研究实验室(AFRL)牵头,联合Moog等产业伙伴共同推进。其核心思路并不复杂:主卫星下方通常存在大量未被利用的整流罩空间,ESPA环正是利用这一区域,将火箭的运载能力“榨”到极致。通过标准化的环状结构,运载火箭可以在主载荷之外携带多颗次级卫星,发射成本被摊薄,任务编排的灵活性也大幅提升。
这一机制直接催生了后来的商业星座浪潮、在轨技术验证项目以及一批关键国防任务的落地。AFRL空间与定向能系统首席历史学家Darren Raspa博士评价称,ESPA重新定义了进入太空的方式,其影响延续至今,横跨商业、政府和军事航天领域,也体现了AFRL与Moog等产业伙伴长期协作的价值。
【关键数据】
- 关键设计评审完成日期: 2001年1月18日
- 研发启动时间: 1999年,AFRL与产业界联合项目
- 当前产品线: Standard ESPA、ESPA Heavy、ESPA Grande(三种配置覆盖不同载荷尺寸)
- 纪念展览: 2026年11月7日—2027年1月10日,新墨西哥州核科学与历史博物馆
模块化平台演进:从适配器到航天器骨架
25年来,ESPA家族已从单一的次级载荷适配器演进为一个 versatile 的模块化平台,支持多种载荷尺寸和接口配置。更值得关注的是,ESPA衍生设计还被用作航天器平台的承力结构基础——适配器本身“升格”为卫星骨架,这种复用思路在业内并不多见。目前,该平台仍在持续支撑NASA、美国政府机构及全球商业航天企业的任务规划。
Moog载荷适配器与隔振业务总经理Timothy Pargett的表述颇具代表性:ESPA环最初只是针对“如何最大化每一次发射机会”这一实际问题的技术解,如今已成为各类规模任务通过拼车模式获得高性价比、可靠入轨能力的基石。
拼车模式的下一程
为纪念这一节点,一枚经过飞行鉴定的ESPA环将于2026年11月7日至2027年1月10日在新墨西哥州阿尔伯克基的核科学与历史博物馆公开展出,公众可近距离目睹这件推动航天拼车模式的硬件实物。从行业视角看,ESPA的25年历程折射出一个更宏观的趋势:发射成本的持续下降与入轨通道的多元化,正在重塑整个航天经济的基础设施逻辑。随着SpaceX Transporter等专属拼车任务的兴起,ESPA所代表的标准化、模块化集成思路仍有充足的应用空间,Moog也将继续围绕航天器载荷集成开发适应性方案。
出处:Moog Marks 25 Years Since ESPA Design Milestone: Innovating Space Rideshare
英文原文East Aurora, N.Y. — Moog Inc. (NYSE: MOG.A and MOG.B) marks 25 years since the Evolved Secondary Payload Adapter (ESPA) ring completed its Critical Design Review in 2001. The pioneering technology helped advance space rideshare by enabling multiple payloads to share a launch and broadening access to orbit for commercial, government, and defense missions. Development of ESPA began in 1999 through a collaborative government-industry initiative, culminating in the successful completion of its Critical Design Review on January 18, 2001. The ESPA ring enabled launch vehicles to carry multiple secondary payloads by efficiently using previously unused volume beneath primary satellites. This approach lowered costs and increased mission flexibility, supporting commercial satellite constellations, technology demonstrations, and critical defense operations. “ESPA helped redefine access to space by enabling additional payloads to share a launch with primary missions. Its impact continues across commercial, government, and military space—and its story reflects the value of enduring collaboration between Air Force Research Lab (AFRL) and industry partners such as Moog,” said Dr. Darren Raspa, chief historian, AFRL Space and Directed Energy Systems. Over the past 25 years, the ESPA family has evolved into a versatile, modular platform supporting varied payload sizes and interface configurations. ESPA-derived designs have also served as the structural foundation for spacecraft buses. Today, the platform continues to support mission planning for NASA, the U.S. government, and commercial space ventures worldwide. Moog continues to offer a family of ESPA configurations, including Standard ESPA, ESPA Heavy, and ESPA Grande, designed to accommodate evolving payload and mission requirements. The platform’s modular architecture and adaptable interfaces support rideshare missions, payload integration, and spacecraft applications across the growing space market. “The ESPA ring began as a technical solution to a practical challenge: maximizing every launch opportunity,” said Timothy Pargett, general manager, Moog Payload Adapters and Isolation business. “Today, it stands as a cornerstone of how missions, large and small, gain cost-effective, reliable access to orbit through rideshare. Its enduring legacy reflects visionary innovation and trusted partnerships across the aerospace community.” In conjunction with the anniversary, a Moog flight-qualified ESPA ring will be on display at the National Museum of Nuclear Science & History in Albuquerque, N.M., from November 7, 2026, through January 10, 2027. Museum visitors will have the opportunity to see firsthand the hardware that helped advance rideshare and enable diverse space missions. As ESPA enters its next chapter, Moog continues to advance spacecraft payload integration and develop adaptable solutions that expand flexible, cost-effective access to orbit for future space exploration and defense missions. About Moog Inc. Moog is a worldwide designer, manufacturer, and systems integrator of high-performance precision motion and fluid controls and control systems. Moog’s high-performance systems control military and commercial aircraft, satellites, and space vehicles, launch vehicles, defense systems, missiles, automated industrial machinery, marine, and medical equipment. Additional information about the Company can be found at www.moog.com or www.moog.com/space . Related Tagged: Moog