In article ,
Pat Flannery wrote:
So both sides owed a little something to Eugene Sanger and his Antipodal
Bomber idea that used atmosphere skipping to increase range, although in
this case the idea was to decrease G loads.

Although range was part of it, too -- the reason you do the full
Zond-style skip, rather than the less drastic Apollo reentry, is if you
really need to stretch the reentry out, to get somewhere that a normal
reentry can't reach. Apollo dropped the skip partly because it also
dropped its original requirement for a landing in the continental US.
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