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

Whole-spacecraft launch-vibration isolation systems are attractive for achieving the goal of better, faster, cheaper, and lighter small satellites by reducing the design-load and vibration-test specifications for on-board components. In this study, a three-axis passive launch-vibration isolation sys...

Full description

Saved in:
Bibliographic Details
Published inAerospace Vol. 8; no. 8; p. 201
Main Authors Park, Yeon-Hyeok, Kwon, Seong-Cheol, Koo, Kyung-Rae, Oh, Hyun-Ung
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2021
Subjects
Isolation systems
launch environment
Load tests
Multilayers
Random vibration
Satellites
Shape memory alloys
small satellite
Small satellites
Spacecraft
Static loads
superelastic shape memory alloy
Superelasticity
Thin plates
Three axis
Titanium
Vibration
Vibration damping
Vibration tests
Viscoelasticity
whole-spacecraft vibration isolation
Online AccessGet full text

Cover

More Information
Summary:Whole-spacecraft launch-vibration isolation systems are attractive for achieving the goal of better, faster, cheaper, and lighter small satellites by reducing the design-load and vibration-test specifications for on-board components. In this study, a three-axis passive launch-vibration isolation system, based on superelastic shape memory alloy (SMA) technology, was developed to significantly attenuate the dynamic launch loads transmitted to a small satellite. This provides a superior damping characteristic, achieved by superelastic SMA blades stiffened by multilayered thin plates with viscous lamina adhesive layers of acrylic tape. The basic characteristics of the proposed isolation system with various numbers of viscoelastic multilayers were obtained through a static load test. In addition, the effectiveness of the design was validated through a launch environment simulating sine and random vibration tests.
ISSN:2226-4310
2226-4310
DOI:10.3390/aerospace8080201