Presentation on theme: "Golubev Yu.F., Grushevskii A.V., Koryanov V.V., Tuchin A.G. A Method of Orbits Designing Using Gravity Assist Maneuvers to the Landing."— Presentation transcript:
Golubev Yu.F., Grushevskii A.V., Koryanov V.V., Tuchin A.G. email@example.com A Method of Orbits Designing Using Gravity Assist Maneuvers to the Landing on the Jovian’s Moons firstname.lastname@example.org International Colloquium and Workshop “Ganymede Lander: scientific goals and experiments” Moscow, Russia, 4-8 March 2013 Keldysh Institute of Applied Mathematics Russian Academy of Sciences
3D-gravity assist maneuver Picture from: Barrabéz E., Gómez G., Rodríguez-Canabal J. Notes for the gravitational assisted trajectories. // Advanced topics in astrodynamics. Summer course. Barcelona, July 2004.
Roscosmos part: Ganymede Landing. Resonance beginning. Typical scenario ESTK complex of Keldysh IAM RAS Ballistic Center Navigation and Ancillary Information Facility (NAIF) - NASA Refined Flyby Model MoonOrbital period of SC after the satellite flyby rated to satellite’s orbital period Number of rounds after a flyby Ganymede61 52 41 31 2.52.52 21
Joining to Jovian System After Interplanetary Part Time of Jovian sphere of action 2029/06/03 09:25:10 UTC Flyby hyperbola ( J2000) Semimajor axe, km 5252.572592 Eccentricity 1.163115 Inclination 23.44 grad V-Infinity, km/s 4.91 Pericenter Time 2029/08/29 17:20:35 UTC Pericenter altitude 12.5 RJ
RADIATION HAZARD PROBLEM (M. Podzolko e.a., SINP MSU Data)
Typical radiation hazard analysis on the ENDGAME phase Dynamics of the radiation accumulation
Typical radiation hazard analysis on the ENDGAME phase Dynamics of the radiation accumulation- zoom scale
Dynamics of the radiation accumulation- on one orbit. Quasi-singularity Period after flyby of GANYMEDE42.9 days Distance in pericenter rated to Jupiter’s radius11.5 Distance in apocenter rated to Jupiter’s radius98.098.0
Tisserand-Poincare graph ( by N.Strange, J.Sims, Kevin W.Kloster, James M.Longuski e.a.)
The V∞ Globe (from Russel, Strange et al. (2007)) Represents all possible V∞ vector tips after a fly-by
Pareto front of Tisserand Graph for the Roscosmos Laplace mission
Pareto front trees of Tisserand graph for Russian Laplace mission
Research basement Orbit correction algorithm preceding spacecraft’s Jovian moons gravity assists Gravity assists refined model ESTK KIAM RAS Ballistic centre complex Navigation and Ancillary Information Facility (NAIF) - NASA ephemeris — will be refined during JUICE by ESA
Fly-by sequence selection strategy Lambert problem solution; The phase-beams method; Delta V minimizations; Gravity-assist parameters permanent corrections; Simulations results are presented.