DOI: https://doi.org/10.15368/theses.2014.162
Available at: https://digitalcommons.calpoly.edu/theses/1313
Date of Award
10-2014
Degree Name
MS in Aerospace Engineering
Department/Program
Aerospace Engineering
Advisor
Eric Mehiel
Abstract
Hardware configurations, a control law, and a steering law are developed for a mixed hardware spacecraft that uses both control moment gyros and reaction wheels. Replacing one or more gyros in a spacecraft with a reaction wheel has potential for cost savings while still achieving much greater performance than using reaction wheels alone. Several simulated tests are run to compare the performance to a traditional all reaction wheel or all control moment gyro spacecraft, including analysis of failure modes and singular configurations. The mixed system performed similarly to all gyro systems, responding within 6% of the gyro system’s time for all nominal cases. It far exceeds the performance of reaction wheel systems, taking only a fourth of the time. It also handles failures better than reduced size gyro systems. As such, it can be an effective cost saving measure for certain satellite missions.
Included in
Acoustics, Dynamics, and Controls Commons, Navigation, Guidance, Control and Dynamics Commons