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Communications

Communications. Ground Stations Communication Equipment Alternative Landing Method March 26, 2009. Communication Equipment on Lander. 100 gram Payload. 10 kg Payload. Ground Stations. Worst case altitude for coverage gap : 80,000 km from VIRAC

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Communications

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  1. Communications Ground Stations Communication Equipment Alternative Landing Method March 26, 2009 [Trent Muller] [COM]

  2. Communication Equipment on Lander 100 gram Payload [Trent Muller] [COM]

  3. 10 kg Payload [Trent Muller] [COM]

  4. Ground Stations • Worst case altitude for coverage gap : 80,000 km from VIRAC • Plan to use Universal Space Network from LEO to 80,000 km • Universal Space network consists of 14 ground stations all around the world • Estimated cost: $1 million (2009$) for one year of usage, one station at a time. [Trent Muller] [COM]

  5. Backup Slides Top down view of Earth showing ground stations an coverage gaps Mt. Pleasant VIRAC PARI [Trent Muller] [COM]

  6. Side view of Earth showing coverage of Mt. Pleasant Observatory’s worst case scenario. For southern hemisphere: Moon’s orbital inclination positive with northern hemisphere tilted towards the Moon [Trent Muller] [COM]

  7. High Energy Tangent Landing • Represents the Lander landing with a significant horizontal velocity and sliding on Lunar surface without skipping, digging in, or creating a crater immediately upon impact. • Assumes constant deceleration based on initial impact. • Based on an old design iteration with a dry mass of 163.49 kg • Shows three landing cases • 10g • 15g • 20g [Trenten Muller] [COM]

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