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Aerospace Engineering


Recent Submissions

The Role of Breccia Lenses in Regolith Generation From the Formation of Small, Simple Craters: Application to the Apollo 15 Landing Site 

Hirabayashi, Masatoshi; Howl, Bryan A.; Fassett, Caleb I.; Soderblom, Jason M.; Minton, David A.; Melosh, H. J.; 0000-0002-1821-5689 (2020-05-28)
Impact cratering is likely a primary agent of regolith generation on airless bodies. Regolith production via impact cratering has long been a key topic of study since the Apollo era. The evolution of regolith due to impact ...

No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions 

Huang, Ya-Huei; Minton, David A.; Zellner, Nicolle E. B.; Hirabayashi, Masatoshi; Richardson, James E.; Fassett, Caleb I. (2020-05-27)
The distributions of Ar-40/Ar-39-derived ages of impact glass spherules in lunar regolith samples show an excess at <500 Ma relative to older ages. It has not been well understood whether this excess of young ages reflects ...

Structural analysis of asteroid Ryugu 

Hirabayashi, Masatoshi (2019-02-28)
This document describes the input files of ANSYS structural analyses for Ryugu rotating at spin periods of 3.5 hr and 3.75 hr.