期刊
ACTA ASTRONAUTICA
卷 179, 期 -, 页码 78-87出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actaastro.2020.09.016
关键词
Directed energy; Beamed energy propulsion; Electric propulsion; Laser electric propulsion; Interplanetary; Deep space transportation; Deep space power; Large aperture phased array; Ground to space power; Space based power; Space mission design
资金
- NASA (USA) [NNX10AT93H, NNX15AL91G, NNX16AL32G, JPL 1584220]
- Breakthrough Foundation as part of the Starshot Initiative
Exploration of the Solar System is limited by current propulsion technologies, requiring faster speeds for missions. Proposed advanced nuclear and exotic systems face challenges of immature technology, high cost, and risks. Electric propulsion powered by directed energy offers breakthrough improvements to lower costs and increase efficiency for Solar System missions.
Exploration of the Solar System is constrained by interplanetary transfer technology. Current propulsion architectures do not allow for trajectories much faster than Hohmann transfers, implying elevated health risks and mission costs associated with multi-year human spaceflight missions and even longer robotic mission times. Proposed advanced nuclear and exotic systems involve immature component technologies and high degrees of complexity, cost, and risk. Breakthrough improvements may be possible with electric propulsion powered by directed energy, where a large-aperture laser phased array directs energy to photovoltaics on electric propulsion vehicles. Narrowband intensity gain over sunlight would lower onboard power system specific mass (kg/kW) to enable fast Solar System missions without advanced nuclear or exotic power and propulsion systems. The proposed architecture is modular and offers scalability from nanosatellites to human missions, with opportunities for operational systems and Solar System exploration along a technology development roadmap.
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