Look, Ma, No HANS!
As part of the low cost design, the spinning Genesis spacecraft has no High Accuracy Navigation Systems (HANS) on board, such as gyros or accelerometers.
High Accuracy Navigation Systems (HANS) Genesis↗
Engineering topics
Carlisle, G.
Publications and source records attributed to Carlisle, G..
Overcoming Genesis Mission Design Challenges
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Genesis Mission Design↗
IRTS Pointing Reconstruction at IPAC
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IRTS STS JCAT↗
Voyager Saturn encounter attitude and articulation control experience
The Voyager attitude and articulation control system is designed for a three-axis stabilized spacecraft; it uses a biasable sun sensor and a Canopus Star Tracker (CST) for celestial control, as well as a dry inertial reference unit, comprised of three dual-axis dry gryos, for inertial control. A series of complex maneuvers was required during the first of two Voyager spacecraft encounters with Saturn (November 13, 1980); these maneuvers involved rotating the spacecraft simultaneously about two or three axes while maintaining accurate pointing of the scan platform. Titan and Saturn earth occulation experiments and a ring scattering experiment are described. Target motion compensation and the effects of celestial sensor interference are also considered. Failure of the CST, which required an extensive reevaluation of the star reference and attitude control mode strategy, is discussed. Results analyzed thus far show that the system performed with high accuracy, gathering data deeper into Saturn's atmosphere than on any previous planetary encounter.
Carlisle, G.↗