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Experimental Testing Of The Accuracy Of Attitude Determination Solutions For A Spin-Stabilized Spacecraft, Keegan P. Ryan
Experimental Testing Of The Accuracy Of Attitude Determination Solutions For A Spin-Stabilized Spacecraft, Keegan P. Ryan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Spin-stabilized spacecraft generally rely on sun and three-axis magnetic field sensor measurements for attitude determination. This study experimentally determines the total accuracy of attitude determination solutions using modest quality sensors. This was ac- complished by having a test spacecraft collect data during spinning motions. The data was then post-processed to find the attitude estimates, which were then compared to the experimentally measured attitude. This same approach will be used to test the accuracy of the attitude determination system of the DICE spacecraft to be built by SDL/USU.
Aerodynamic Thrust Vectoring For Attitude Control Of A Vertically Thrusting Jet Engine, M. Ryan Schaefermeyer
Aerodynamic Thrust Vectoring For Attitude Control Of A Vertically Thrusting Jet Engine, M. Ryan Schaefermeyer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
NASA’s long range vision for space exploration includes human and robotic missions to extraterrestrial bodies including the moon, asteroids and the martian surface. All feasible extraterrestrial landing sites in the solar system are smaller and have gravitational fields of lesser strength than Earth’s gravity field. Thus, a need exists for evaluating autonomous and human-piloted landing techniques in these reduced-gravity situations. A small-scale, free-flying, reduced-gravity simulation vehicle was designed by a group of senior mechanical engineering students with the help of faculty and graduate student advisors at Utah State University during the 2009-2010 academic year. The design reproduces many of the …