Performance Investigation of Superplastic Shape Memory Alloy-Based Vibration Isolator for X-Band Active Small SAR Satellite of S-STEP under Acoustic and Random Vibration Environments

Article Engineering, Aerospace

Design and Performance of X-Band SAR Payload for 80 kg Class Flat-Panel-Type Microsatellite Based on Active Phased Array Antenna

Seok Kim et al.

Summary: The S-STEP project aims to develop an innovative high-resolution SAR microsatellite and improve the development efficiency and system quality through the improvement of payload system design.

AEROSPACE (2022)

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Article Mechanics

High-damping PCB implemented by multi-layered viscoelastic acrylic tapes for use of wedge lock applications

Tae-Yong Park et al.

Summary: The article examines a high-damping PCB to reduce the dynamic displacement of electronic devices in a vibrational environment, thus extending the fatigue life. By implementing high damping characteristics through viscoelastic acrylic tapes, a design solution for effective vibration attenuation is proposed.

ENGINEERING FRACTURE MECHANICS (2021)

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Article Environmental Sciences

Potential of a SAR Small-Satellite Constellation for Rapid Monitoring of Flood Extent

Natsumi Kitajima et al.

Summary: This study utilizes a constellation of small satellites equipped with synthetic aperture radar to conduct flood monitoring experiments, demonstrating that the technology can independently observe flood extents in short time intervals effectively. However, different flood events exhibit varying characteristics and satellite observation systems, requiring individual assessments for accurate monitoring.

REMOTE SENSING (2021)

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Article Engineering, Aerospace

New Thermal Design Strategy to Achieve an 80-kg-Class Lightweight X-Band Active SAR Small Satellite S-STEP

Tae-Yong Park et al.

Summary: The main objective of the S-STEP mission is to develop an 80-kg-class active X-band SAR observation small satellite, with a focus on a new thermal design strategy. This strategy aims to minimize heater power consumption, provide long-term SAR imaging duration, and utilize lightweight flexible graphite sheet as a thermal interface for high-power instruments.

AEROSPACE (2021)

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Article Engineering, Aerospace

High Damping Passive Launch Vibration Isolation System Using Superelastic SMA with Multilayered Viscous Lamina

Yeon-Hyeok Park et al.

Summary: A three-axis passive launch-vibration isolation system based on superelastic shape memory alloy technology was developed to attenuate dynamic launch loads transmitted to a small satellite. The system demonstrates superior damping characteristics and its effectiveness was validated through static load tests and launch environment simulating vibration tests.

AEROSPACE (2021)

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Article Engineering, Aerospace

Innovative Mechanical Design Strategy for Actualizing 80 kg-Class X-Band Active SAR Small Satellite of S-STEP

Seong-Cheol Kwon et al.

Summary: The S-STEP mission aims to develop a small SAR satellite with innovative thermo-mechanical design approaches, including flat plate-type structure, multifunctional TR module, and VFOD. Structural analysis and development tests confirm the effectiveness of the design.

AEROSPACE (2021)

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Article Mechanics