The required satellite mission durations and levels of reliability have been considerably increased: While in the beginning of the 70's 3 to 5 year missions were planned, the standard is now 10 years with an expansion to 15 years and more for such programs as INTELSAT VII. Based on a 20 year test and flight experience with basically the same design, ball bearing momentum and reaction wheels with the required 15 year mission capability can be provided.
Test results and flight experience of ball bearing momentum and reaction wheels
01.04.1990
Aufsatz (Konferenz)
Keine Angabe
Englisch
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