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Refinements for 150 and 190 n.mi. circular target orbits were examined along with the potential advantages of ground-hold as a means of reducing the phasing times associated with low orbit rendezvous.

Data appearing in the October 1973 space shuttle traffic model were analyzed to determine the rendezvous requirements for the proposed shuttle flights occurring between 1980 and 1991. Four families of flights have been identified, namely, single-payload rendezvous, multiple-payload rendezvous, payload and tug rendezvous, and tug only rendezvous. Charts have been prepared which summarize the respective data. Observations are presented for each of the four flight families, and worst case flights are proposed from each family for further analysis.

Launch window characteristics of Jupiter opportunities using Atlas Centaur launch vehicle

Payload capabilities of Saturn IB-Centaur for launch opportunities to Mars in 1971, 1973, and 1975 and to Venus in 1972 and 1973

Intercept trajectories to asteroid Eros in 1974 and comet De Arrest in 1976

Direct and indirect Atlas Centaur booster ascent mode comparisons for Mars flyby spacecraft