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24 th International Symphosium on Space Flight Dynamics, May 5-9, 2014

To the adaptive multibody gravity assists tours design in Jovian system for the Ganymede Landing. Grushevskii A. Grushevskii A.V., Golubev Yu.F, Koryanov V.V., Tuchin A.G. To the adaptive multibody gravity assist tours design in Jovian system for the Ganymede Landing.

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24 th International Symphosium on Space Flight Dynamics, May 5-9, 2014

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  1. To the adaptive multibody gravity assists tours design in Jovian system for the Ganymede Landing. Grushevskii A.

  2. Grushevskii A.V.,Golubev Yu.F, Koryanov V.V., Tuchin A.G.To the adaptive multibody gravity assist tours design in Jovian system for the Ganymede Landing 24th International Symphosium on Space Flight Dynamics, May 5-9, 2014 Keldysh Institute of Applied MathematicsRussian Academy of Sciences

  3. ESA- JUICE MISSION

  4. ESA- JUICE Mission Debut Interplanetary part- Ganymede Flyby- JOI- G&C-Flyby Sequence GOI

  5. Roskosmos part: +Ganymede Landing • Flexible JOI Data • Flexible G&C-Flyby Sequence • GOI • Ganymede Circular Orbit • Landing

  6. -Min Delta V (ballistic scenarios, if it’s possible) -Radiation Doze Accumulation (TILD) -Duration -Min V-infinity relative Ganymede MaiN Problems

  7. 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

  8. Quasi-Singularity of the Radiation Hazard

  9. Joining to Jovian System After Interplanetary Part • Time of Jovian sphere of action2029/06/03 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

  10. 1 GAM (near Ganymede) Callisto Europa IO Ganymede Vx=0.000755, Vy= 0.005958, Vz=0.003207, |V|=0.006808

  11. 2 GAM Vx-0.004218, Vy=0.002570, Vz=0.001342, |V|=0.005118

  12. 3 GAM Vx=-0.014865, Vy=0.012230, Vz=0.004934, |V|=0.019872

  13. 4 GAM Vx=-0.003701, Vy=0.003109, Vz=0.001477, |V|=0.005055

  14. 5 GAM Vx=-0.001707, Vy=0.005016, Vz=0.002694, |V|=0.005944

  15. 6 GAM Vx=-0.006027, Vy=0.003142, Vz=-0.000433, |V|=0.006811

  16. Quasi-Singularity of the Radiation Hazard

  17. Gravity-assist sequence. Effective Type T1

  18. RADIATION HAZARD PROBLEM (M. Podzolko e.a., SINP MSU Data)

  19. Typical radiation hazard analysis on the ENDGAME phase Dynamics of the radiation accumulation

  20. Typical radiation hazard analysis on the ENDGAME phase Dynamics of the radiation accumulation- zoom scale

  21. Dynamics of the radiation accumulation- on one orbit. Quasi-singularity

  22. Ti (Tisserand’s Criterion) Restricted 3 Body ProblemJacobi Integral J Tisserands Parameter T (see R.Russel, S.Campagnola) “Isoinfine” (“Captivity”)

  23. Tisserand-Poincare graph(N.Strange, J.Sims, K.Kloster, J.Longuskiaxes Rp-T(A.Labunskii, O.Papkov, K.Sukhanov axes Ra-Rp- the same)

  24. TP-strategy(axes Ra-Rp in RJ)

  25. CB-Classic Billiard Duplex Shutting CGB-Classic Gravitational Billiard

  26. Using PHASE BEAM method of Gravity Assists Sequences Determination

  27. Previous front trees of Tisserand graphfor Russian “Laplace” mission

  28. Previous Tisserand Graphfor the Roscosmos “Laplace” mission

  29. Phase Selection • We need the criterion of selection of encounters for V-infinity reduction • The “Magic” code is: “Ganymede”+”Not Ganymede”+”Ganymede” Or “G”^”C”^…^”C”^”G”

  30. Rebounds+ReRebounds (axes Ra-Rp)

  31. Real Phase Searching(axes Ra-Rp in RJ) Rebounds Rebounds-ReRebounds

  32. “JUICE” by ESA Tisserand-Poincare typical graph

  33. 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 byESA

  34. Fly-by sequence selection strategy • Lambert problem solution; • The phase-beams method; • Delta V minimizations; • Gravity-assist parameters permanent corrections; • Simulations results are presented.

  35. Gravity-assist sequence. Effective Type T1

  36. Part II of radiation-comfortable tour

  37. Low-radiation sequence type T2

  38. Type: Hyper-low-radiation,Expensive Delta V • T3

  39. «Endgame»(S.Campagnola, R.Russel, 2011)

  40. Virtual Trajectories Splitting After Swing-by

  41. Applications for Another Kinds of Flybys

  42. Callisto & Ganymede • Tour design problem lends itself well to optimization schemes Callisto & Ganymede assists us to minimize fuel requirements

  43. Thank you for your attention !

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