Low Energy Transfer Applications MWL - 1 [email protected] JPL 2004 Summer Workshop on Advanced...
11
Low Energy Transfer Applications MWL - [email protected] JPL 2004 Summer Workshop on Advanced Topics in Astrodynamics Shoot the Moon Shadowing Unstable Manifold of Sun-Earth L2 Lyapunov Orbit Shadowing Stable Manifold of Sun- Earth L2 Lyapunov Orbit to Leave Earth Eart h Lunar Orbit Maneuver to Transfer to Stable Manifold of Earth-Moon L2 Lyapunov Orbit Ballistic Lunar Capture Shoot the Moon: Low Energy Transfer & Ballistic Capture
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Transcript of Low Energy Transfer Applications MWL - 1 [email protected] JPL 2004 Summer Workshop on Advanced...
Low Energy Transfer Applications
MWL - 1
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Shoot the Moon
Shadowing Unstable Manifold of
Sun-Earth L2 Lyapunov Orbit
Shadowing Stable Manifold of Sun-
Earth L2 Lyapunov Orbit to Leave Earth
Earth
Lunar Orbit
Maneuver to Transfer to Stable Manifold of Earth-Moon L2 Lyapunov Orbit
Ballistic Lunar Capture
Shoot the Moon: Low Energy Transfer & Ballistic Capture
Low Energy Transfer Applications
MWL - 2
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Weak Stability Boundary Approach
•Discussed in Session II.
Low Energy Transfer Applications
MWL - 3
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Poincaré Cut of Sun-Earth Unstable Mnfd
Earth L2 Lyapunov Orbit
Low Energy Transfer Applications
MWL - 4
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Poincaré Cut of Earth-Moon Stable Mnfd
Lunar L2 Lyapunov Orbit
Low Energy Transfer Applications
MWL - 5
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Intersect S-E & E-M Manifolds
Low Energy Transfer Applications
MWL - 6
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Construction of Lunar Capture Orbit
TRAJECTORIES FROM SUN-EARTH
EXTERIORREGION
TRAJECTORIES FROM SUN-EARTH
INTERIORREGION
TO EARTH-MOON INTERIOR
REGION
EARTH TO LUNAR
CAPTURE TRAJECTORY
POINCARE SECTION OF SUN-EARTH AND EARTH-MOON SYSTEMS
Low Energy Transfer Applications
MWL - 8
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Earth-Moon IPSIPS InterchangeInterchange
• Easy Return of S/C from L2 to
– Lunar L1/L2 Orbit
– Lunar Capture Orbit
–Earth Return Orbit
• Potential for Human Servicing & Replacements
• Staging for Interplanetary Launch
Low Energy Transfer Applications
MWL - 10
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Construction of Earth Transfer Orbit
• S = [q1, q2]
• Same X, Y Coord. & Energy, Differ in Velocity, i.e. Gives V
• Integrate S Backwards for Inverse Poincare Map: P-1
• S Integrated Backwards Approaches Lyapunov Orbit and Spirals Around Sun-Earth Lyapunov Orbit’s Stable Manifold
• Part of Stable Manifold Approaches Earth
Low Energy Transfer Applications
MWL - 11
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Shoot the Moon
Low Energy Transfer Applications
MWL - 12
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Shoot the Moon
Low Energy Transfer Applications
MWL - 13
JPL
2004 Summer Workshop on Advanced Topics in Astrodynamics
Hiten-Like Ballistic Lunar Capture (2)
