Analysis of heliographic missions complementary to ISPMFive concepts were formulated, analyzed, and compared for satisfying heliographic science mission objectives both with and without a concurrent International Solar Polar Mission (ISPM) Spacecraft. Key astrodynamic constraints and performance factors are known from literature for the Lagrange point mission and the sun-synchronous earth orbit mission, but are set forth in this paper for the three solar orbiting missions concepts considered. Any of these five missions should be doable at modest cost since no strong cost drivers were encountered in the analyses. The mission to be flown depends on mission capability to meet science measurement needs more than on strong economic factors. Each mission offers special advantages for particular measurement emphasis. Based on selected qualitative mission discriminators, an overall 'best mission' was selected and described in some detail.
Document ID
19840047766
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Driver, J. M. (California Institute of Technology, Jet Propulsion Laboratory, Mission Design Section, Pasadena CA, United States)