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Low-cost interstellar probe
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DOI：10.1016/S0094-5765(02)00166-2.png)
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摘要
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For more than 20 years, an Interstellar Precursor Mission has been discussed as a high priority for science. Various schemes considered require massive propulsion systems and are inherently expensive. We reconsider an old approach in which a small probe obtains significant solar-system escape speeds by dropping deep into the Sun's gravitational potential well and then executing a DeltaV maneuver at perihelion. This implementation requires a very robust and autonomous, yet low-mass spacecraft, as well as an advanced perihelion propulsion system that can be used while the probe is thermally protected from the near-Sun environment. Many of the engineering problems are driven by the need for reliable decades-long cruise in deep space and so are largely independent of the propulsion system. Such a long-lived probe could be queried at random over decades of otherwise hands-off operations and return data obtainable in no other known way on the conditions that exist in the space between the stars. (C) 2002 Elsevier Science Ltd. All rights reserved.
Keyword:
EXPLORATION MISSIONS
ELECTRIC PROPULSION
SYSTEM
SPACE
STAR
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IF:
3.4
论文数:
1.2W
被引数:
2.1W
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