The Origins, Spectral-Interpretation, Resource-Identification, Security and Regolith-Explorer (OSIRIS-REx) spacecraft supports all aspects of the mission science objectives, from extensive remote sensing at the asteroid Bennu, to sample collection and return to Earth. In general, the success of planetary missions requires the collection, return, and analysis of data, which in turn depends on the successful operation of instruments and the host spacecraft. In the case of OSIRIS-REx, a sample-return mission, the spacecraft must also support the acquisition, safe stowage, and return of the sample. The target asteroid is Bennu, a B-class near-Earth asteroid roughly 500 m diameter. The Lockheed Martin-designed and developed OSIRIS-REx spacecraft draws significant heritage from previous missions and features the Touch-and-Go-Sample-Acquisition-Mechanism, or TAGSAM, to collect sample from the surface of Bennu. Lockheed Martin developed TAGSAM as a novel, simple way to collect samples on planetary bodies. During short contact with the asteroid surface, TAGSAM releases curation-grade nitrogen gas, mobilizing the surface regolith into a collection chamber. The contact surface of TAGSAM includes “contact pads”, which are present to collect surface grains that have been subject to space weathering. Extensive 1-g laboratory testing, “reduced-gravity” testing (via parabolic flights on an airplane), and analysis demonstrate that TAGSAM will collect asteroid material in nominal conditions, and a variety of off-nominal conditions, such as the presence of large obstacles under the TAGSAM sampling head, or failure in the sampling gas firing. TAGSAM, and the spacecraft support of the instruments, are central to the success of the mission.

中文翻译：

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OSIRIS-REx 航天器和一触即走样品采集机制 (TAGSAM)

起源、光谱解释、资源识别、安全和风化层探索器 (OSIRIS-REx) 航天器支持任务科学目标的各个方面，从小行星 Bennu 的广泛遥感到样本收集和返回地球。一般来说，行星任务的成功需要数据的收集、返回和分析，而这又取决于仪器和宿主航天器的成功运行。在 OSIRIS-REx 样本返回任务的情况下，航天器还必须支持样本的获取、安全装载和返回。目标小行星是 Bennu，一颗直径约 500 m 的 B 级近地小行星。洛克希德马丁公司设计和开发的 OSIRIS-REx 航天器从以前的任务中汲取了重要的遗产，并具有一触即发的采样采集机制，或 TAGSAM，从 Bennu 表面收集样品。洛克希德马丁公司开发的 TAGSAM 是一种在行星体上收集样本的新颖、简单的方法。在与小行星表面短暂接触期间，TAGSAM 会释放监管级氮气，将表面风化层移动到收集室中。TAGSAM 的接触面包括“接触垫”，用于收集受到空间风化的表面颗粒。广泛的 1-g 实验室测试、“减重”测试（通过飞机上的抛物线飞行）和分析表明，TAGSAM 将在标称条件下和各种非标称条件下收集小行星材料，例如存在大量TAGSAM 采样头下方有障碍物，或采样气体点火失败。TAGSAM，以及仪器的航天器支持，