Passive vibration isolation of reaction wheel disturbances using a low frequency flexible space platform

Kamesh, D.; Pandiyan, R.; Ghosal, Ashitava

doi:10.1016/j.jsv.2011.10.033

Cited by 132 publications

(60 citation statements)

References 8 publications

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“…This isolation can be accomplished by mounting the RWAs on a vibration isolator with low stiffness by attenuating the transmitted vibration to the main payload structures, which are sensitive to the micro-jitters. Kamesh et al [6] proposed a low-frequency flexible platform that consisted of folded continuous beams for passive RWA vibration isolation. The effectiveness of the design was confirmed through tests conducted by mounting the RWA on several configurations of the flexible platform.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Kwon

2017

International Journal of Aerospace Engineering

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On-board appendages with mechanical moving parts for satellites produce undesirable micro-jitters during their on-orbit operation. These micro-jitters may seriously affect the image quality from high-resolution observation satellites. A new application form of a passive vibration isolation system was proposed and investigated using a pseudoelastic SMA mesh washer. This system guarantees vibration isolation performance in a launch environment while effectively isolating the micro-disturbances from the on-orbit operation of jitter source. The main feature of the isolator proposed in this study is the use of a ring-type mesh washer as the main axis to support the micro-jitter source. This feature contrasts with conventional applications of the mesh washers where vibration damping is effective only in the thickness direction of the mesh washer. In this study, the basic characteristics of the SMA mesh washer isolator in each axis were measured in static tests. The effectiveness of the design for the new application form of the SMA mesh washer proposed in this study was demonstrated through both launch environment vibration test at qualification level and micro-jitter measurement test which corresponds to on-orbit condition.

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Section: Introductionmentioning

confidence: 99%

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Kwon

2017

International Journal of Aerospace Engineering

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“…During the ground experiments, the effects of R/MWA induced disturbance on the optical payload are of prime concern. Zhou et al [7,8] and Kamesh et al [9,10] all used a real momentum wheel assembly (MWA) to measure the micro-vibrations produced by the MWA with and without the proposed soft suspension system. However, it is not usual to employ all the flight R/MWAs to conduct the ground validating experiments because of scheduling issues or product assurance activities.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

Wang

et al. 2017

Shock and Vibration

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To reproduce the disturbance forces and moments generated by the reaction/momentum wheel assembly, a multi-degree-offreedom micro-vibration simulator is proposed. This can be used in the ground vibration experiments of an optical payload replacing the real action/momentum wheel assembly. First, the detailed structure of the micro-vibration simulator is introduced. Then, the complete system kinematic and dynamic models of the micro-vibration simulator are derived. In addition, the disturbance forces and moments produced by the micro-vibration simulator are calculated. Finally, the normal mode analysis and a cosimulation are adopted to verify the validity of this method. The analysis and simulation results show that the micro-vibration simulator can exactly reproduce the disturbance forces and moments with different amplitudes and different frequency ranges.

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“…Several types of passive isolators have been proposed and investigated in literatures [6][7][8][9]. For example, Riabzev et al [6] proposed a multidimensional passive vibration isolator comprising a triple-stage spring mass system mounted on an oscillating cold tip of the cooler, which has low stiffness characteristics in the lateral direction of the coil spring.…”

Section: Introductionmentioning

confidence: 99%

“…This isolation system achieved suppression of 20 dB of vibration for the first three cryocooler harmonics of 55, 110, and 165 Hz. Kamesh et al [9] introduced various flexure-type passive isolators having various thicknesses and bending struts for the micro-vibration isolation of the disturbance source, including the cryogenic cooler, through the frequency decoupling between the excitation frequency and the natural frequency of the isolator assembly. They demonstrated the effectiveness of the developed isolator through numerical analysis.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of spaceborne cryocooler micro-vibration isolation system employing pseudoelastic SMA mesh washer

Kwon

Jeon

2015

Cryogenics

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Passive vibration isolation of reaction wheel disturbances using a low frequency flexible space platform

Cited by 132 publications

References 8 publications

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

Performance evaluation of spaceborne cryocooler micro-vibration isolation system employing pseudoelastic SMA mesh washer

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