Magnetic field investigations on low cost missions

Abstract

Magnetic fields pervade all of space and provide important diagnostic information on the nature of processes occurring within and around solar system objects. Thus magnetic investigations are frequently included on planetary missions. Since spacecraft subsystems can generate magnetic fields that may interfere with the measurement of the ambient field, magnetic cleanliness programs are usually instituted to minimize such extraneous magnetic field sources. These programs need not require significant cost since magnetic control issues are now well understood but they do require early educational efforts and good communication with all hardware providers. Recent experience with the Small Explorer program, FAST, and plans for the proposed Hermes Discovery mission are discussed.