TY - GEN
T1 - Advancing Asteroid Surface Simulations and Missions Using An On-Orbit Centrifuge Laboratory Without Reaction Wheels
AU - Vance, Leonard D.
AU - Thangavelautham, Jekan
AU - Schwartz, Steven
AU - Asphaug, Erik
N1 - Publisher Copyright:
Copyright © 2021 by the International Astronautical Federation (IAF). All rights reserved.
PY - 2021
Y1 - 2021
N2 - The recent explorations of near-Earth asteroids Ryugu and Bennu provide surprises regarding the physics of regolith in rubble pile asteroids. The OSIRIS-REx sample and return activity discovered that what appears to be a solid surface is quite fragile, exemplified by OSIRIS-REx not even registering contact while the sample and return mechanism pushed down some 48cm below the surface. The Asteroid Origins Satellite+ (AOSAT+) mission proposes to address the physics of low gravity regolith using centripetal acceleration to reproduce a microgravity laboratory in low earth orbit, including vibration and impact experiments to understand the physics accretion and deflection. To eliminate the vibration environment due to reaction wheels, the satellite is stabilized with torque rods only, using anticipative genetic optimization. This provides a low vibration rotational environment that closely mimics that seen on rubble pile asteroids. A payload comprising a chamber partially filled with crushed meteorite chondrite regolith provides a simulated surface upon which manipulative experiments can be completed.
AB - The recent explorations of near-Earth asteroids Ryugu and Bennu provide surprises regarding the physics of regolith in rubble pile asteroids. The OSIRIS-REx sample and return activity discovered that what appears to be a solid surface is quite fragile, exemplified by OSIRIS-REx not even registering contact while the sample and return mechanism pushed down some 48cm below the surface. The Asteroid Origins Satellite+ (AOSAT+) mission proposes to address the physics of low gravity regolith using centripetal acceleration to reproduce a microgravity laboratory in low earth orbit, including vibration and impact experiments to understand the physics accretion and deflection. To eliminate the vibration environment due to reaction wheels, the satellite is stabilized with torque rods only, using anticipative genetic optimization. This provides a low vibration rotational environment that closely mimics that seen on rubble pile asteroids. A payload comprising a chamber partially filled with crushed meteorite chondrite regolith provides a simulated surface upon which manipulative experiments can be completed.
KW - Asteroid
KW - genetic optimization
KW - microgravity
KW - regolith
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M3 - Conference contribution
AN - SCOPUS:85127597137
T3 - Proceedings of the International Astronautical Congress, IAC
BT - 19th IAA Symposium on Building Blocks for Future Space Exploration and Development 2021 - Held at the 72nd International Astronautical Congress, IAC 2021
PB - International Astronautical Federation, IAF
T2 - 19th IAA Symposium on Building Blocks for Future Space Exploration and Development 2021 at the 72nd International Astronautical Congress, IAC 2021
Y2 - 25 October 2021 through 29 October 2021
ER -