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Opportunities for ballistic missions to Halley's cometAlternative strategies for ballistic missions to Halley's comet in 1985-86 are described. A large scientific return would be acquired from a ballistic Halley intercept in spite of the high flyby speeds that are associated with this mission mode. The possibility of retargeting the cometary spacecraft to additional comets after the Halley intercept also exists. Two cometary spacecraft of identical design would be used to carry out four separate cometary encounters over a 3 year period. One spacecraft would intercept Halley's comet before its perihelion passage in December 1985 and then go on to comet Borrelly with an encounter in January 1988. The other spacecraft would be targeted for a postperihelion Halley intercept in March 1986 before proceeding toward an encounter with comet Tempel 2 in September 1988.
Document ID
19770022240
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Farquhar, R. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wooden, W. H., II
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
August 1, 1977
Subject Category
Astronautics (General)
Report/Patent Number
G-7702-F17
NASA-TN-D-8453
Accession Number
77N29184
Funding Number(s)
PROJECT: RTOP 186-68-73
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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