NASA's Small Explorer spacecraft - Flight proven, high performance, reliable, and still small

Details NASA's Small Explorer spacecraft - Flight proven, high performance, reliable, and still small NASA's Small Explorer spacecraft - Flight proven, high performance, reliable, and still small

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993graz.iafc.....w&link_type=abstract

IAF, International Astronautical Congress, 44th, Graz, Austria, Oct. 16-22, 1993, 10 p.

Astronomy and Astrophysics

Astrophysics

Airborne/Spaceborne Computers, Nasa Space Programs, Small Scientific Satellites, Space Processing, Spacecraft Control, Spacecraft Instruments, Astrophysics, Attitude Control, Downlinking, Spacecraft Power Supplies

Scientific paper

NASA's Small Explorer (SMEX) project has developed a series of highly capable small satellites that are being used to support astrophysics and space physics investigations. These satellites, while both small and economical, give up nothing in performance and versatility to the larger satellites developed over the past 15 years within the Explorer program. Innovative engineering and new technology advances have increased the potential scientific return of the SMEX spacecraft to a level comparable to larger carriers. The design has struck a balance between mission risk and cost that has allowed for the development of an extremely capable spacecraft. The first SMEX mission, Solar Anomalous and Magnetospheric Particle Explorer (SAMPEX), has been in orbit since July 1992 and is continuing to perform well. It has proven the merits of this design approach. This paper describes the fundamental strategies and technologies used in developing the design. It outlines the key elements of the system architecture and describes the capabilities and merits of the major subsystems. Major design trade-offs are highlighted. Emphasis is placed on the innovative attitude control system which was developed for the SAMPEX mission. The paper also describes the unique SMEX approach to mission operations.

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