Halo Orbit AdvantagesPrevious Next
The use of halo orbits instead of lunar orbits for a communication relay constellation provides many powerful advantages:|
Some disadvantages of halo orbits are:
Since more mass can be placed in a halo orbit, the performance of the communications system can be increased to make up for the longer link distances and still save mass. The instability of halo orbits just means that station keeping maneuvers must be performed. For lunar halo orbits, the station keeping budget should only be about 1 m/s/year, which is much less than most lunar orbits. In fact, some lunar orbits are much more unstable than halo orbits due to the extremely asymmetric lunar gravity field.
The rest of this presentation will provide an in-depth explanation of the low-energy transfers and autonomous orbit determination possible in halo orbits.
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