Golubev Yu.F., Grushevskii A.V., Koryanov V.V., Tuchin A.G. [e-mail] A Method of Orbits Designing Using Gravity Assist Maneuvers to the Landing on the Jovian

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Golubev Yu.F., Grushevskii A.V.,Koryanov V.V.,
Tuchin A.G.golubev_at_keldysh.ruA Method of
Orbits Designing Using Gravity Assist Maneuvers
to the Landing on the Jovians Moons
Keldysh Institute of Applied MathematicsRussian
Academy of Sciences

• International Colloquium and WorkshopGanymede
  Lander scientific goals and experiments
• Moscow, Russia, 4-8 March 2013

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CB-Classic Billiard
Duplex Shutting CGB-Classic Gravitational Billiard
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3D-gravity assist maneuver
Picture from Barrabéz E., Gómez G.,
Rodríguez-Canabal J. Notes for the gravitational
assistedtrajectories. // Advanced topics in
astrodynamics. Summer course. Barcelona, July
2004.
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ESA- JUICE MISSION

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ESA- JUICE Mission Endgame
Ganymede Flyby-JOI- GC-Flyby Sequence
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Roscosmos part Ganymede Landing

• Flexible JOI Data
• Flexible GC-Flyby Sequence
• GOI
• Ganymede Circular Orbit
• Landing

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Roscosmos part Ganymede Landing. Resonance
beginning. Typical scenario
Moon Orbital period of SC after the satellite flyby rated to satellites orbital period Number of rounds after a flyby
Ganymede 6 1
Ganymede 5 2
Ganymede 4 1
Ganymede 3 1
Ganymede 2.5 2
Ganymede 2 1
ESTK complex of Keldysh IAM RAS Ballistic
Center Navigation and Ancillary Information
Facility (NAIF) - NASA Refined Flyby Model
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Joining to Jovian System After Interplanetary Part

• Time of Jovian sphere of action2029/06/03
  092510 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 172035 UTC
• Pericenter altitude 12.5 RJ

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Quasi-Singularity of the Radiation Hazard
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Typical radiation hazard analysis on the ENDGAME
phase

• Dynamics of the radiation accumulation

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Typical radiation hazard analysis on the ENDGAME
phase

• Dynamics of the radiation accumulation- zoom scale

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Dynamics of the radiation accumulation- on one
orbit. Quasi-singularity
Period after flyby of GANYMEDE 42.9 days
Distance in pericenter rated to Jupiters radius 11.5
Distance in apocenter rated to Jupiters radius 98.0

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Tisserand-Poincare graph(by N.Strange, J.Sims,
Kevin W.Kloster, James M.Longuski e.a.)
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The V8 Globe (from Russel, Strange et al. (2007))

• Represents
• all possible
• V8
• vector
• tips after
• a fly-by

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JUICE Tisserand-Poincare graph type
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Pareto front of Tisserand Graph for the Roscosmos
Laplace mission
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Pareto front trees of Tisserand graphfor Russian
Laplace mission
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Research basement

• Orbit correction algorithm preceding spacecrafts
  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

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Fly-by sequence selection strategy

• Lambert problem solution
• The phase-beams method
• Delta V minimizations
• Gravity-assist parameters permanent corrections
• Simulations results are presented.

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Gravity-assist sequence. Effective Type T1
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Low-radiation sequence type T2
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Type Hyper-low-radiation,Expensive Delta V

• T3

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Using PHASE BEAM method of Gravity Assists
Sequences Determination
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Virtual Trajectories Splitting After Swing-by
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Applications for Another Kinds of Flybys
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Callisto Ganymede

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

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