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Akademický článek

A Pattern Search Method to Optimize Mars Exploration Trajectories

Autor: Su-Jin Choi, Hongjae Kang, Keejoo Lee, Sejin Kwon

Publikováno v: Aerospace, Vol 10, Iss 10, p 827 (2023)

The Korean National Space Council recently released “Mars Exploration 2045” as part of its future strategic plan. The operations for a Mars explorer can be defined based on domestically available capabilities, such as ground operations, launch, i

Externí odkaz: https://doaj.org/article/64cb1d108cb24c6dbc687635f7d33599

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Akademický článek

Numerical Derivation of Buckling Knockdown Factors for Isogrid-Stiffened Cylinders with Various Shell Thickness Ratios

Autor: Han-Il Kim, Chang-Hoon Sim, Jae-Sang Park, Keejoo Lee, Joon-Tae Yoo, Young-Ha Yoon

Publikováno v: International Journal of Aerospace Engineering, Vol 2020 (2020)

This study is aimed at providing a numerical derivation of the shell knockdown factors of isogrid-stiffened cylinders under axial compressive loads. The present work uses two different analysis models such as the detailed model with modeling of numer

Externí odkaz: https://doaj.org/article/c7ec2cac04a44bbda453d46a5b0f3006

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Akademický článek

Buckling Knockdown Factors of Composite Cylinders under Both Compression and Internal Pressure

Autor: Do-Young Kim, Chang-Hoon Sim, Jae-Sang Park, Joon-Tae Yoo, Young-Ha Yoon, Keejoo Lee

Publikováno v: Aerospace, Vol 8, Iss 11, p 346 (2021)

The internal pressure of a thin-walled cylindrical structure under axial compression may improve the buckling stability by relieving loads and reducing initial imperfections. In this study, the effect of internal pressure on the buckling knockdown fa

Externí odkaz: https://doaj.org/article/d5496758c65349229acf1cba7c47778f

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