Russell-Ocampo cycler 2.3.1.+1 ('Case 3' of Byrnes/McConaghy/Longuski 2002)

russell-ocampo-2.3.1+1-case3 · source: literature · validation: V0

Signature

Bodies: E-M
Sequence (canonical): E-E-M-M
Sense: outbound
Period: 4.270 yr (2 × E-M synodic)
Priority date: 2002-08-05

V∞ at encounters

E (#1): 5.40 km/s
Russell 2004 Table 3.4, cycler 2.3.1.+1 ('Case 3' per footnote e).
M (#2): 5.30 km/s
Russell 2004 Table 3.4, cycler 2.3.1.+1.

Orbit elements (heliocentric)

Semi-major axis a: — AU
Eccentricity e: —
Perihelion: — AU
Aphelion: 1.642 AU
Inclination: 0.00°

Aphelion Ratio 1.08 per Russell 2004 Table 3.4.

Legs

E → M: 143 d, 0 revs
Russell 2004 Table 3.4 for 2.3.1.+1.

Primary citation

Byrnes, D. V. et al. (2002). Analysis of Various Two Synodic Period Earth-Mars Cycler Trajectories. AIAA 2002-4423.

DOI: 10.2514/6.2002-4423

URL: https://arc.aiaa.org/doi/10.2514/6.2002-4423

Notes

"Case 3" in the Byrnes/McConaghy/Longuski 2002 enumeration. Russell 2004 Table 3.4 footnote 'e' attributes this entry. Russell 2004 Table 3.4 classifies this cycler under the wider ARMIN=0.9 / TRMIN=0.85 "ballistic" net rather than the strict AR>=1.0 AND TR>=1.0 criterion. Strictly, this cycler is near-ballistic: AR=1.08, TR=0.92; the gravity-assist deflection at Earth or Mars (turn ratio just under 1) is short of fully ballistic and requires a small powered nudge. The `trajectory_regime: ballistic` field is retained because Russell and the cycler literature group it with the ballistic family; consumers doing powered-flyby DV accounting should still compute the residual.

Source quotes (per-field provenance)

Every numerical value in this entry traces to a verbatim or paraphrased quote from a cited source.

vinf_kms_at_encounters[0].vinf_kms: Russell 2004 Table 3.4, row 2.3.1.+1.
vinf_kms_at_encounters[1].vinf_kms: Russell 2004 Table 3.4, row 2.3.1.+1.
legs[0].tof_days: Russell 2004 Table 3.4, row 2.3.1.+1: 143 d.
aphelion_au: Aphelion ratio 1.08 x 1.52 AU = 1.642 AU per Russell 2004 Table 3.4.