+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Marchal, C. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 15 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 Next  On the determination of the dynamical oblateness of the sun and of the coefficients beta and gamma of the generalized tensor of Robertson Author(s): Marchal, C. Abstract: Solar dynamical oblateness and Robertson tensor coefficients determined by heliocentric space probes NASA Center: NASA (non Center Specific) Publication Year: 1970 Added to NTRS: 2007-10-26 Accession Number: 70N39848; Document ID: 19700030532; Report Number: NASA-TT-F-13252 Optimal transfers between elliptic coplanar orbits /time open/ Author(s): Marchal, C. Abstract: No Abstract Available NASA Center: NASA (non Center Specific) Publication Year: 1966 Added to NTRS: 2007-04-07 Accession Number: 69N71747; Document ID: 19690067568; Report Number: NASA-CR-100150 Optimum transfers between hyperbolic orbits /finite planetary radius/ Author(s): Marchal, C. Abstract: No Abstract Available NASA Center: NASA (non Center Specific) Publication Year: 1966 Added to NTRS: 2007-04-05 Accession Number: 69N71718; Document ID: 19690067539; Report Number: NASA-CR-100196 Optimization of the extra-atmospheric part of the ascending trajectory to an orbit Author(s): Marchal, C. Abstract: Elliptic and open orientation impulse optimization for extra-atmospheric part of ascending rocket trajectory to orbit NASA Center: NASA (non Center Specific) Publication Year: 1968 Added to NTRS: 2006-08-02 Accession Number: 68N36321; Document ID: 19680026849; Report Number: NASA-TT-F-11878 Synthesis of the analytical results on optimal transfer between Keplerian orbits Author(s): Marchal, C.; Marec, J.-P.; Winn, C. B. Abstract: Numerical analysis of optimal transfer between Keplerian orbits NASA Center: NASA (non Center Specific) Publication Year: 1968 Added to NTRS: 2006-08-02 Accession Number: 68N22247; Document ID: 19680012778; Report Number: NASA-TT-F-11590 Analytical solutions of a class of optimum orbit modifications Author(s): Marchal, C.; Vinh, N. X. Abstract: Analytical solutions of optimum orbit modifications NASA Center: NASA (non Center Specific) Publication Year: 1969 Added to NTRS: 2005-10-13 Accession Number: 69N31362; Document ID: 19690021984; Report Number: NASA-CR-1379 Study of the determination of the coefficients beta and gamma of the generalized metric of Robertson and of the dynamical oblateness of the sun Author(s): Marchal, C. Abstract: Motion of a space probe about a spherical center of attraction is considered, applying the general theory of relativity. Motion of a probe under the influence of the sun's oblateness is also discussed. Estimates of beta, ... NASA Center: NASA (non Center Specific) Publication Year: 1971 Added to NTRS: 2005-09-09 Accession Number: 72N13803; Document ID: 19720006154 Optimum transfer between hyperbolic asymptotes with turn angle less than the maximum natural turn angle. Author(s): Walton, J. M.; Marchal, C.; Culp, R. D. Abstract: The impulsive transfer of minimum characteristic velocity between two given hyperbolic asymptotes associated with a real planet is considered. The constraint of remaining above the surface of the planet introduces a maximum ... NASA Center: NASA (non Center Specific) Publication Year: 1971 Added to NTRS: 2004-11-03 Accession Number: 72A24487; Document ID: 19720040821 Numerical study of the economical earth-Mars and earth-Venus transfers. Author(s): Culp, R.; Gravier, J. P.; Marchal, C. Abstract: Earth-Mars and earth-Venus economical transfers derived for optimal conditions with respect to characteristic velocity, obtaining exact numerical solution NASA Center: NASA (non Center Specific) Publication Year: 1969 Added to NTRS: 2004-11-03 Accession Number: 69A42855; Document ID: 19690064866; Report Number: AAS PAPER 69-241 Optimal trajectories between Earth and Mars in their true planetary orbits. Author(s): Gravier, J. P.; Marchal, C.; Culp, R. D. Abstract: The optimal transfers from Earth to Mars and from Mars to Earth, considering the actual planetary orbits, are presented as functions of the corresponding idealized Hohmann transfers. The numerically exact two-impulse ... NASA Center: NASA (non Center Specific) Publication Year: 1972 Added to NTRS: 2004-11-03 Accession Number: 72A19824; Document ID: 19720036158 1 2 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007