Trajectory Analysis and Guidance Theory Second Compilation of Papers, 1 Oct. 1966 - 1 Oct. 1967
Spacecraft guidance, trajectory analysis, and celestial mechanics - conference
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SEARCH · Engineering Papers
Results for “CELESTIAL MECHANICS”
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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High order time derivatives of powers of the radius vector
High order time derivatives of powers of radius vector and power series expansions for celestial mechanics
Sconzo, P.↗
The binary collision in the n-body problem.
Binary collision in n-body problem of celestial mechanics using analytic differential equations
Sperling, H. J.↗
Third compilation of papers on trajectory analysis and guidance theory
Compilation of technical papers in guidance theory, optimization theory, numerical methods, and celestial mechanics
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On the real singularities of the N-body problem
Theorems on collision singularities in many body problem, and bibliography on equations of motion in celestial mechanics
Sperling, H. J.↗
Classical adiabatic perturbation theory
Adiabatic perturbation theory in celestial mechanics
Stern, D. P.↗
Adiabatic invariance - The evolution of a concept
Developmental history of adiabatic invariance including contributors to radiation energy transfer and celestial mechanics concepts
Stern, D. P.↗
Dynamical aspects of lunar origin
Lunar origin dynamics, discussing orbit evolution by tidal friction and celestial mechanical theory
Kaula, W. M.↗
Asteriods and comets
Asteroids and comets bibliography and review, considering celestial mechanics and astrometry, photometry, spectra, polarimetry and radar measurements
Gehrels, T.↗
Mariner Mars 1971 project. Volume 2: Preliminary science results
Data from six Mariner Mars experiments are presented. Television reconnaissance of Mars and its satellites yielded information on atmospheric phenomena, surface features of the South Polar region, geology, and satellite astronomy. Other experiments involved infrared spectroscopy and radiometry; ultraviolet spectrometry; S band occultation for observing the atmosphere, ionosphere, and topography of Mars; and the use of celestial mechanics, to determine the gravity field pole direction of the planet.
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Mariner-Venus 1967
Detailed information on the spacecraft performance, mission operations, and tracking and data acquisition is presented for the Mariner Venus 1967 and Mariner Venus 1967 extension projects. Scientific and engineering results and conclusions are discussed, and include the scientific mission, encounter with Venus, observations near Earth, and cruise phase of the mission. Flight path analysis, spacecraft subsystems, and mission-related hardware and computer program development are covered. The scientific experiments carried by Mariner 5 were ultraviolet photometer, solar plasma probe, helium magnetometer, trapped radiation detector, S-band radio occultation, dual-frequency radio propagation, and celestial mechanics. The engineering experience gained by converting a space Mariner Mars 1964 spacecraft into one flown to Venus is also described.
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Adiabatic invariance
Theoretical work designed to bridge the gap between celestial mechanics and the motion of charged particles in magnetic fields is presented. Attempts are made to devise a simple uninvolved method to solve adiabatic invariant motion problems. The method is illustrated by solving a problem involving the motion of a slowly perturbed harmonic oscillator.
Stern, D.↗
A precompiler for the formula manipulation system TRIGMAN.
Discussion of a translator designed to simplify the programming of problems involving the TRIGMAN formula manipulation system. The translator allows for the introduction of a new data type, SERIES, into a FORTRAN program and translates a user's program into legal FORTRAN. The translator is adaptable to other formula manipulation systems presently used in celestial mechanics.
Jefferys, W. H.↗
Doppler frequency in interplanetary radar and general relativity
The change of frequency of an interplanetary radar signal sent from the earth to another planet or to a space probe is worked out according to general relativity. The Schwarzschild spacetime is employed and its null geodesics control the motion of the signals. Exact Doppler frequency formulas are derived for one-way and two-way radar in terms of an arbitrary Schwarzschild radial coordinate. A reduction to the special relativity case is used to interpret the formulas in terms of the relative radial velocity of emitter and target. The general relativity corrections are worked out approximately for each of three possible Schwarzschild radial coordinates, and a numerical example is given. The amount of the correction is different according as one or the other of the Schwarzschild coordinates is identified with the radius vector deduced from classical celestial mechanics. The identification problem is discussed.
Mcvittie, G. C.↗
Tracking and data system support for the Pioneer project. Volume 1: Pioneer 10-prelaunch planning through second trajectory correction, 4 December 1969 - 1 April 1972
The tracking and data system support of the launch, near-earth, and deep space phases of the Pioneer 10 mission, which sent a Pioneer spacecraft into a flyby of Jupiter that would eventually allow the spacecraft to escape the solar system is discussed. The support through the spacecraft's second trajectory correction is reported. During this period, scientific instruments aboard the spacecraft registered information relative to interplanetary particles and fields, and radiometric data generated by the network continued to improve knowledge of the celestial mechanics of the solar system. In addition to network support activity detail, network performance and special support activities are covered.
Siegmeth, A. J.↗
Tracking and data system support for the pioneer project. Volume 11 Pioneers 6-9. Extended missions: 1 July 1971 - 1 July 1973
The Tracking and Data System supported the deep space phases of the Pioneer 6, 7, 8, and 9 missions, with two spacecraft in an inward trajectory and two spacecraft in an outward trajectory from the earth in heliocentric orbits. Scientific instruments aboard each of the spacecraft continued to register information relative to interplanetary particles and fields, and radio metric data generated by the network continued to improve our knowledge of the celestial mechanics of the solar system. In addition to network support activity detail, network performance and special support activities are covered.
Renzetti, N. A.↗
A semi-analytical method of computation of oceanic tidal perturbations in the motion of artificial satellites
The method of expansion of the satellite's perturbations, as caused by the oceanic tides, into Fourier series is discussed. The coefficients of the expansion are purely numerical and peculiar to each particular satellite. Such a method is termed as semi-analytical in celestial mechanics. Gaussian form of the differential equations for variation of elements, with the right hand sides averaged over the orbit of the satellite, is convenient to use with the semi-analytical expansion.
Musen, P.↗
The effects of trajectory characteristics on scientific objectives for major planetary orbiters.
Outline of specific solutions in the areas of attitude control, interplanetary trajectory parameters, and orbital configurations of major planetary spacecraft. It is shown that inertia wheel supplementation to a three-axis, stabilized attitude control system will substantially reduce propellant weight and attitude jet firings, especially when considering three-year orbital lifetimes as well as interplanetary trip times of several years. Eight interplanetary trajectory parameters including the earth injection energy and the declination of the launch asymptote are shown for a 1980 earth launch mission to Jupiter. The effects of the interplanetary trajectory parameters on the deboost velocities and resulting orbits about Jupiter are summarized. Orbital mode and science interfaces are defined, and a celestial mechanics experiment independent of earth tracking is briefly outlined.
Paul, C. K.↗