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Aerospace Engineering Seminar Series: Joshua Lyzhoft SPEAKER: Joshua Lyzhoft TITLE: DART and Dimorphos Velocity Change Estimation ABOUT: The Double Asteroid Redirection Test (DART) is the very first Planetary Defense driven mission. Instead of typical science mission objectives, the DART spacecraft was used as a testbed for next generation ion propulsion systems, hypervelocity intercept of a small (<200 meter) target asteroid, terminal guidance algorithms, velocity change (momentum enhancement factor as well), and other aspects of science and engineering interest. This presentation will step through some of the pre-impact measurements, post-impact measurements, and velocity change estimation (based on measurements) routines and strategies. Current efforts are showing that an in-track velocity change can be estimated by using the period change. BIO: Josh Lyzhoft started at the NASA Goddard Space Flight Center in 2016, where he began working on binary asteroid dynamics for the DART mission. A year after joining Goddard, he received a PhD in aerospace engineering from Iowa State University under Dr. Bong Wie. In 2018, he joined the OSIRIS-REx mission helping with IV&V activities for the Approach Phase through Bennu Departure. Now, Josh is working on Dimorphos velocity change estimation, general small-body proximity operations, and on-board shape modeling. ZOOM DETAILS: https://umd.zoom.us/j/2226271754?pwd=RWhyUnUxMG1Hc2IvcHJMTWwrWXpodz09 This Event is For: Clark School • All Students • Graduate • Faculty • Staff
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