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Developing the Grain Velocimetry and Tomography Analyzer System (GraVeTAS) for impact experiments

Presentation #317.02 in the session Future Missions and Instrumentations - Rocky Bodies, Atmospheres (Poster)

Published onOct 23, 2023
Developing the Grain Velocimetry and Tomography Analyzer System (GraVeTAS) for impact experiments

The shape and velocity relationships of impact ejecta from meteoroid collisions are poorly understood due to limitations in accurate measurement techniques and equipment, particularly for micro-g conditions on asteroids. There currently exists no single instrument capable of simultaneously measuring the three-dimensional shape and instantaneous velocity vector of small, low speed ejecta products on an individual particle basis. To address this gap in measurement capabilities, we are developing a low-cost laser velocimeter/tomographer, the Grain Velocimetry and Tomography Analyzer System (GraVeTAS). GraVeTAS is a laser-based sensor suite in a vacuum chamber for simultaneously measuring particle size and shape of impact ejecta. A gasless projectile launcher achieving velocities from 10-100 m/s, combined with the laser sensor suite, fires vertically in a vacuum chamber for use both in a laboratory environment and on microgravity parabolic flights. We aim to fill the unexplored parameter space of simultaneous measurements of the velocity, size, and shape dependencies of impact ejecta dynamics.

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