Into the Beyond: A Crewed Mission to a Near-Earth Object - NASA

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djk 9/20/07 . BACKUP Into the Beyond: A Crewed Mission to a Near-Earth Object :: International Astronomical Congress 2007 CONSTELLATION 26
djk 9/20/07 . Selecting a Target NEO • Identified the ∂ V to match NEO orbits and Created “Lambshank” ∂ V contour plots – ∂ V contours show the minimum possible post-escape, and total mission ∂ V to a NEO with a given semi-major axis a and eccentricity e. – Idealized a close approach to Earth (neglected NEO’s position in the orbit) – 14-day stay time assumed. – Tried for a 90-day mission (also ran 120, 150, 180-day options) • Overlaid the known NEO catalog on Lambshank plots – Finds the possible NEO opportunities based upon the orbital elements – Allows quick assessment of new NEOs as opportunities as they are found – Doesn’t capture all the highly elliptical or earth-transit NEOs but those are much fewer – Current NEO Database had no candidate targets for Lower Bookend in 201x - 2030 – Looked for earliest candidate missions in an expanded database ~40x in time, 2014- 2214 Into the Beyond: A Crewed Mission to a Near-Earth Object :: International Astronomical Congress 2007 CONSTELLATION 27
Page 1 and 2: djk 9/20/07 . Into the Beyond: A Cr
Page 3 and 4: djk 9/20/07 . What is a NEO (Near E
Page 5 and 6: djk 9/20/07 . Example NEO Trajector
Page 7 and 8: NEO Population Discovery 2006: 3% K
Page 9 and 10: djk 9/20/07 . Precursor NEO Mission
Page 11 and 12: 110.6 meters Historical Ref Only dj
Page 13 and 14: djk 9/20/07 . EELV for Launch of Ea
Page 15 and 16: djk 9/20/07 . “Upper Bookend” N
Page 17 and 18: djk 9/20/07 . Lower Bookend (Ares I
Page 19 and 20: djk 9/20/07 . Lower Bookend (Ares I
Page 21 and 22: NEO mission allows early checkout a
Page 23 and 24: Planned Robotic Missions to NEOs Cx
Page 25: djk 9/20/07 . Into the Beyond: A Cr
Page 29: djk 9/20/07 . Summary Findings for

Into the Beyond: A Crewed Mission to a Near-Earth Object - NASA

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