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首页> 外文期刊>Experimental Astronomy >AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance A Titan airplane mission concept
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AVIATR—Aerial Vehicle for In-situ and Airborne Titan Reconnaissance A Titan airplane mission concept

机译：AVIATR-实地和机载泰坦侦察的空中交通工具Titan飞机的任务概念

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We describe a mission concept for a stand-alone Titan airplane mission: Aerial Vehicle for In-situ and Airborne Titan Reconnaissance (AVIATR). With independent delivery and direct-to-Earth communications, AVIATR could contribute to Titan science either alone or as part of a sustained Titan Exploration Program. As a focused mission, AVIATR as we have envisioned it would concentrate on the science that an airplane can do best: exploration of Titan’s global diversity. We focus on surface geology/hydrology and lower-atmospheric structure and dynamics. With a carefully chosen set of seven instruments—2 near-IR cameras, 1 near-IR spectrometer, a RADAR altimeter, an atmospheric structure suite, a haze sensor, and a raindrop detector—AVIATR could accomplish a significant subset of the scientific objectives of the aerial element of flagship studies. The AVIATR spacecraft stack is composed of a Space Vehicle (SV) for cruise, an Entry Vehicle (EV) for entry and descent, and the Air Vehicle (AV) to fly in Titan’s atmosphere. Using an Earth-Jupiter gravity assist trajectory delivers the spacecraft to Titan in 7.5 years, after which the AVIATR AV would operate for a 1-Earth-year nominal mission. We propose a novel ‘gravity battery’ climb-then-glide strategy to store energy for optimal use during telecommunications sessions. We would optimize our science by using the flexibility of the airplane platform, generating context data and stereo pairs by flying and banking the AV instead of using gimbaled cameras. AVIATR would climb up to 14 km altitude and descend down to 3.5 km altitude once per Earth day, allowing for repeated atmospheric structure and wind measurements all over the globe. An initial Team-X run at JPL priced the AVIATR mission at FY10 $715M based on the rules stipulated in the recent Discovery announcement of opportunity. Hence we find that a standalone Titan airplane mission can achieve important science building on Cassini’s discoveries and can likely do so within a New Frontiers budget.
机译：我们描述了一个独立的泰坦飞机任务的任务概念：原位和机载泰坦侦察飞行器（AVIATR）。通过独立交付和直接对地通信，AVIATR可以单独或作为持续的“泰坦探索计划”的一部分，为泰坦科学做出贡献。作为一项有重点的任务，我们所设想的AVIATR将专注于飞机最擅长的科学：探索Titan的全球多样性。我们专注于地表地质/水文学以及低气压结构和动力学。借助精心选择的七套仪器（2台近红外摄像机，1台近红外光谱仪，RADAR高度计，大气结构套件，雾度传感器和雨滴探测器），AVIATR可以完成以下科学目标的重要子集：旗舰研究的空中元素。 AVIATR航天器堆栈由用于巡航的太空飞行器（SV），用于进入和下降的进入飞行器（EV）和在泰坦大气中飞行的飞行器（AV）组成。利用地球木星重力辅助轨迹，该航天器将在7.5年内将飞船运送到Titan，此后，AVIATR AV将进行为期1年的名义飞行。我们提出了一种新颖的“重力电池”爬升滑行策略，以存储能量，以在电信会议期间最佳使用。我们将通过使用飞机平台的灵活性来优化科学，通过飞行和倾斜AV来生成上下文数据和立体声对，而不是使用万向节摄像机。每个地球日，AVIATR都会爬升至14 km的高度，然后下降至3.5 km的高度，从而允许在全球范围内重复进行大气结构和风的测量。根据最近的“发现”机会公告中规定的规则，最初在JPL上运行的Team-X将AVIATR任务的价格定为2010财年的7.15亿美元。因此，我们发现独立的泰坦飞机任务可以在卡西尼号的发现基础上建立重要的科学基础，并且有可能在“新边疆”预算范围内实现。

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