ETC research at Soreq NRC, Israel

Alimi, Roger; Borenstein, A.; Goldenberg, C.; Perelmutter, L.; Pokryvailo, A.; Shafir, N.; Wald, S.; Weiss, Eyal; Zoler, D.; Shapira, Michael Y.

doi:10.1109/20.911781

“…Linear permanent-magnet machines have also gained popularity for EM launch as they overcome the low efficiency problem present in linear induction motors (LIMs), and have been successfully developed for vertical launch and EM aircraft launch (EMAL) applications [11], [12]. Once considered insurmountable, the technical barriers have yielded to focused theoretical, computational, and experimental research [13] and several countries all over the world have taken up the challenge of developing and understanding the art and science of EM launch and launchers [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Saket¹,

Xaxa²,

Srivastava³

2022

Preprint

0

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<p>This paper presents the design aspects and thermal characteristics of single-sided linear induction motor (SLIM) for Electromagnetic launchers. It is designed to accelerate a 50 kg mass through a distance of 3 meters within a minuscule time to an exit velocity of 50 m/s. A study of the motor’s parametric variation based on the launching requirement has been performed. Its performance characteristics are obtained using 3D FEM and verified analytically using Parseval’s method. The FEM, analytical and experimental verification of the thrust characteristics of different secondary conductive sheet materials namely, aluminum, beryllium copper and German silver shows that, the latter exhibits superior characteristics than the former two, because its thrust-velocity curve is close to inverse linear relationship (stable region of operation of LIM) , which significantly reduces the accelerating time during the launch. The designed SLIM is assessed for its thermal performance with materials having temperature-dependent electrical properties by carrying out a coupled-field FEM simulation. The conclusions demonstrate that the electromagnetic and thermal assessments are in tandem with each other as required for launching.</p>

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“…Linear permanent-magnet machines have also gained popularity for EM launch as they overcome the low efficiency problem present in linear induction motors (LIMs), and have been successfully developed for vertical launch and EM aircraft launch (EMAL) applications [11], [12]. Once considered insurmountable, the technical barriers have yielded to focused theoretical, computational, and experimental research [13] and several countries all over the world have taken up the challenge of developing and understanding the art and science of EM launch and launchers [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Saket,

Xaxa,

Srivastava

2022

Preprint

0

View full text Add to dashboard Cite

<p>This paper presents the design aspects and thermal characteristics of single-sided linear induction motor (SLIM) for Electromagnetic launchers. It is designed to accelerate a 50 kg mass through a distance of 3 meters within a minuscule time to an exit velocity of 50 m/s. A study of the motor’s parametric variation based on the launching requirement has been performed. Its performance characteristics are obtained using 3D FEM and verified analytically using Parseval’s method. The FEM, analytical and experimental verification of the thrust characteristics of different secondary conductive sheet materials namely, aluminum, beryllium copper and German silver shows that, the latter exhibits superior characteristics than the former two, because its thrust-velocity curve is close to inverse linear relationship (stable region of operation of LIM) , which significantly reduces the accelerating time during the launch. The designed SLIM is assessed for its thermal performance with materials having temperature-dependent electrical properties by carrying out a coupled-field FEM simulation. The conclusions demonstrate that the electromagnetic and thermal assessments are in tandem with each other as required for launching.</p>

show abstract

“…Linear permanent-magnet machines have also gained popularity for EM launch as they overcome the low efficiency problem present in linear induction motors (LIMs), and have been successfully developed for vertical launch and EM aircraft launch (EMAL) applications [11], [12]. Once considered insurmountable, the technical barriers have yielded to focused theoretical, computational, and experimental research [13] and several countries all over the world have taken up the challenge of developing and understanding the art and science of EM launch and launchers [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Xaxa

¹

,

Kumar

²

,

Shriwastava

³

et al. 2022

IEEE Access

2

0

View full text Add to dashboard Cite

This paper presents the design aspects and thermal characteristics of single-sided linear induction motor (SLIM) for Electromagnetic launchers. It is designed to accelerate a 50 kg mass through a distance of 3 meters within a minuscule time to an exit velocity of 50 m/s. A study of the motor's parametric variation based on the launching requirement has been performed. Its performance characteristics are obtained using 3D FEM and verified analytically using Parseval's method. The FEM, analytical and experimental verification of the thrust characteristics of different secondary conductive sheet materials namely, aluminum, beryllium copper and German silver shows that, the latter exhibits superior characteristics than the former two, because its thrust-velocity curve is close to inverse linear relationship (stable region of operation of LIM) , which significantly reduces the accelerating time during the launch. The designed SLIM is assessed for its thermal performance with materials having temperature-dependent electrical properties by carrying out a coupled-field FEM simulation. The conclusions demonstrate that the electromagnetic and thermal assessments are in tandem with each other as required for launching.INDEX TERMS Electromagnetic launcher, SLIM, Fourier Transform Model, Coupled-field FEM.

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ETC research at Soreq NRC, Israel

Cited by 12 publications

References 21 publications

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

Design Aspects and Thermal Characteristics of Single-Sided Linear Induction Motor for Electromagnetic Launch Application

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