Intelligent sensitivity analysis framework based on machine learning for spacecraft thermal design

Y Xiong, L Guo, Y Yang, H Wang - Aerospace Science and Technology, 2021 - Elsevier
The variance-based method of global sensitivity analysis (GSA) has been widely applied in
spacecraft thermal design, which is typically calculated using Monte Carlo estimations …

A mathematical model for the separation behavior of a split type low-shock separation bolt

DH Hwang, JH Han, J Lee, YJ Lee, D Kim - Acta Astronautica, 2019 - Elsevier
Pressure cartridge type separation devices which are widely used in fairing, stage
separations of space launch systems, and many other aerospace fields generate much …

The electromagnetic separation system for the small spherical satellite Q-SAT

H Yunhan, W Zhaokui, Z Yulin - Acta Astronautica, 2021 - Elsevier
This paper proposes a novel electromagnetic separation system for the small spherical
satellite Q-SAT, which is developed by Tsinghua University. Q-SAT was successfully …

Study on transient dynamics of the pyrotechnic-driven large flexible expansion mechanism

Y Jiang, H Xiao, G Yang, H Guo, R Liu, Z Deng - Nonlinear Dynamics, 2024 - Springer
This paper presents a pyrotechnic-driven large flexible expansion mechanism for aerospace
applications, where a flexible link is added to the mechanism to enhance its high speed …

Separation and Release Devices for Aeronautical and Astronautical Systems: A Review

J Lee, JH Han - International Journal of Aeronautical and Space …, 2024 - Springer
This review presents an in-depth examination of the advancements, current state, and future
trends of separation and release devices in aeronautical and astronautical systems …

Numerical Validation of a Pyroshock Test System and Application to Qualification Tests

T Yalçinkaya, B Gürsoy - Aerospace, 2022 - mdpi.com
Spacecraft are exposed to severe mechanical loads, ie, shock loads, during their journey to
orbit. Such loads usually develop due to a separation event through the activation of …

Multidisciplinary Structural Optimization of Low-Pyroshock Separation Nuts for Aerospace

Y Wu, Y Lu, H Yang, Y Liu, M Zhou - Journal of Spacecraft and Rockets, 2023 - arc.aiaa.org
This paper presents a multidisciplinary structural optimization approach to design separation
nuts with low-level pyroshock responses for aerospace. A parametric modeling method is …

[HTML][HTML] Time-Varying Reliability Analysis of Mechanisms with Strength Degradation Considering Clearances and Local Stiffness Effects

P Gao - Applied Sciences, 2024 - mdpi.com
Mechanism systems are important components of dynamic mechanical systems. The time-
varying reliability assessment of mechanism systems is of great significance for the safety …

Active subspace approach to reliability and safety assessments of small satellite separation

X Hu, X Chen, Y Zhao, Z Tuo, W Yao - Acta Astronautica, 2017 - Elsevier
Ever-increasing launch of small satellites demands an effective and efficient computer-aided
analysis approach to shorten the ground test cycle and save the economic cost. However …

Close-range maneuver planning for uncontrolled rendezvous with multiple elliptical orbit targets based on genetic algorithm

F Xiao, Y Sun, R Wang - Journal of Physics: Conference Series, 2024 - iopscience.iop.org
On-orbit debris removal is an important and challenging problem in space engineering. A
low-cost method for this problem is to use uncontrolled rendezvous with a sub-spacecraft …