On Thu, 1 Aug 2002, Stewart Cobb wrote:
> Henry probably knows about this already...
> There is a class of trajectories from LEO to lunar orbit
> for which the lunar orbit insertion is entirely ballistic...
Yep. It's nice work, potentially quite useful. There are a few fine
points which should be noted:
+ Travel time is months, as opposed to days for orthodox trajectories.
+ The resulting lunar orbits are high and quite elliptical. A requirement
for a low circular orbit reduces the gains somewhat.
+ The standard of comparison requires care: Apollo trajectories were not
optimized for rock-bottom delta-V.
Henry Spencer
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