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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Space probe charged particle data evidence for moon crossing of Earth magnetospheric tail
Adaptability of Lunar Orbiter to surface experiments using flyby and earth return trajectory
Harmonic L-4 orbit for very restricted four-body problem determined by method of general perturbations using Chebyshev series
Radio-tracking data from Ranger lunar missions for estimated physical constants of earth and moon
Earth, moon, and interplanetary trajectories in astrodynamics research project
Scientific value of manned lunar exploration
Feedback control system to position satellite in vicinity of unstable collinear libration point with application to lunar communication problem
Tidal friction theory of lunar origin and dynamic evolution
Periodic motion around triangular libration point in restricted four-body problem of earth-moon-sun system
Feedback control system to position satellite in vicinity of unstable collinear libration point applied to lunar communication problem
Iterative guidance mode with application to three- dimensional upper stage vacuum flight
Photography from aircraft of cloud-like objects in vicinity of libration points L4 and L5 of earth- moon system
Reuseable shuttle transportation system for lunar base logistics, estimating cost and performance
Analyses of Lunar Laser ranges Shaw a displacement in direction of the Moon's pole of rotation which indicates that strong dissipation is acting on the rotation.
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A targeting scheme is presented to build trajectories from a specified Earth parking orbit to a specified low lunar orbit via a low-energy transfer and up to two maneuvers. The total transfer delta V (velocity) is characterized as a function of the Earth parking orbit inclination and the departure date for transfers to each given low lunar orbit. The transfer delta V (velocity) cost is characterized for transfers constructed to low lunar polar orbits with any longitude of ascending node and for transfers that arrive at the Moon at any given time during a month.
The characteristics of low-energy transfers between the Earth and Moon vary from one month to the next largely due to the Earth's and Moon's non-circular, non-coplanar orbits in the solar system. This paper characterizes those monthly variations as it explores the trade space of low-energy lunar transfers across many months. Mission designers may use knowledge of these variations to swiftly design desirable low-energy lunar transfers in any given month.