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Course Overview/Orbital Mechanics - Dave Akin's Web Site

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Some Useful Constants<br />

• Gravitation constant µ = GM<br />

– Earth: 398,604 km<br />

– Moon: 4667.9 km<br />

– Mars: 42,970 km<br />

U N I V E R S I T Y O F<br />

MARYLAND<br />

3/sec 2<br />

3/sec 2<br />

3/sec 2<br />

– Sun: 1.327x10 11 km<br />

• Planetary radii<br />

– r Earth = 6378 km<br />

– r Moon = 1738 km<br />

– r Mars = 3393 km<br />

Tuesday, January 31, 2012<br />

3/sec 2<br />

37<br />

<strong>Course</strong> <strong>Overview</strong>; <strong>Orbital</strong> <strong>Mechanics</strong><br />

ENAE 791 - Launch and Entry Vehicle Design

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