Statistics – Applications
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aiaa.confu....p&link_type=abstract
AIAA and AAS, Astrodynamics Conference, Seattle, WA, Aug. 20-22, 1984. 9 p. NASA-supported research.
Statistics
Applications
Artificial Gravity, Asteroid Missions, Solar System, Tethering, Energy Storage, Mars Probes
Scientific paper
Analytical models are defined for gravity-assist trajectory changes for spacecraft passing massive compact bodies. The models are applied in an examination of the benefits of lowering a tether to an asteroid during a flyby in order to gain a trajectory change equivalent to that from a massive body (planet). Direct flybys yield velocity gains while retrograde flybys shed velocity. The magnitude of the effects are a function of the proximity to the body during flyby. This inherently limits the gravity assist technique used around planets, which usually have atmospheres and can have intense radiation fields. If a spacecraft could extend a tether (such as to be tested on the Orbiter) to snag on an asteroid surface, the potential trajectory/velocity change of the spacecraft would be limited mainly by the tether strength. The encounter physics are treated as a soft collision. Possible applications of the asteroid tether technique are outer planet, Mars and main belt asteroid exploration missions.
Mayer H. L.
Penzo Paul A.
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