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 Figure 52 presents actual abort performance data for aborts to primary recovery sites for a typical transearth coast trajectory shown plotted is the time at landing as measured from transearth injection as a function of the time or abort measured from transearth in action. Data is shown for three primary recovery sites—Indian Ocean, Hawaii, and Bermuda, As shown, the nominal transearth trajectory is targeted to return to Hawaii at the time of landing or 90 hours as measured from transearth injection. Aborts with a time of landing 24 hours earlier to Hawaii can be performed during the first in hours of transearth coast. Nate also that the raster returns are available to alternate landing sites during the first us hours of transearth coast, Also shown is the availability of returns to an alternate (Indian Ocean) site with a later time of landing up through approximately the first 55 hours of transearth coast, These data, then, show considerable flexibility or abort capability to speed up the return and/or to change the point of landing. It is also of interest that returns to primary recovery sites still display the 24 hour effect, as in the previous phases.

CONCLUSIONS