Development of Advanced Thermoplastic Composite Projectiles for High-Velocity Shots With the PEGASUS Railgun

Avril, Clara; Perreux, Dominique; Thiebaud, Frédéric; Reck, B.; Hundertmark, S.

doi:10.1109/tps.2011.2170994

Cited by 10 publications

(11 citation statements)

References 5 publications

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“…These fissures indicate the beginning of delamination of the horizontally orientated layers of glass fibers. This failure mechanism was also observed during the preceding investigations at the PEGASUS launcher [5]. The observation is nevertheless very useful because the launch conditions at the PEGASUS facility differ distinctively from that of RAFIRA in so far as the heat load is considerably larger [9], whereas the maximum acceleration level is considerably lower.…”

Section: Resultssupporting

confidence: 73%

“…Table II summarizes the main experimental parameters and results of these shots. The sabot materials of the first three shots are commercially available, whereas the materials used in the last one were developed in collaboration with ISL [5]. For details on the material properties, we refer the reader to [5] and the references therein.…”

Section: Resultsmentioning

confidence: 99%

“…The sabot materials of the first three shots are commercially available, whereas the materials used in the last one were developed in collaboration with ISL [5]. For details on the material properties, we refer the reader to [5] and the references therein. The variation of the projectile mass is mainly due to slightly different densities of the GRP materials.…”

Section: Resultsmentioning

confidence: 99%

“…The sabot started to disintegrate during launch due to the combined influence of acceleration forces and plasma heating. Therefore, the ISL started to develop appropriate GRP in-house [5]. Later on, when RAFIRA was operational, we benefited from these developments.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Single-Shot Performance of RAFIRA

Schneider

Schuppler

Alouahabi

2015

IEEE Trans. Plasma Sci.

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The rapid fire railgun (RAFIRA) developed at the French-German Research Institute of Saint-Louis (ISL) is a medium-caliber (25 mm × 25 mm) system designed to obtain very high fire rates (>50 Hz). It has an acceleration length of 3 m and is therefore comparable with existing close-in weapon systems such as Goalkeeper or Phalanx. In this paper, the singleshot performance of RAFIRA is presented. While RAFIRA has, in the past, mainly been used for multishot studies, its 3.4-MJ power supply allowed testing speed limits of the brush armature technology used at the ISL. The combination of light-weight sabots made from glass fiber-reinforced plastic and multiple metal fiber bundles acting as armatures allowed muzzle velocities in excess of 2 km/s while exhibiting excellent sliding contact performance throughout the launch. Corresponding experimental findings for varying projectile configurations and primary energies are presented and discussed.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Single-Shot Performance of RAFIRA

Schneider

Schuppler

Alouahabi

2015

IEEE Trans. Plasma Sci.

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“…300 g. The body of these projectiles is fabricated using industrial pre impregnated E-glass laminate. With these projectiles it was possible to reach velocities of about 2200 m/s, for higher velocities delamination and break-up of the GRP was observed [8]. One possibility to increase the velocity potential of plastic projectile bodies is to improve the stability against hard acceleration by using innovative materials.…”

Section: Pegasus Standard Projectilementioning

confidence: 99%

Experiments to Increase the Used Energy With the PEGASUS Railgun

Hundertmark

Schneider

Simicic

et al. 2014

IEEE Trans. Plasma Sci.

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Abstract-The French-German Research Institute (ISL) has several railguns installed, the largest of these is the PEGASUS accelerator. It is a 6 m long, 4 x 4 cm 2 caliber distributed energy supply (DES) railgun. It has a 10 MJ capacitor bank as energy supply attached to it. In the past, this installation was used to accelerate projectiles with a mass of about 300 g to velocities up to 2500 m/s. In the ongoing investigation, it is attempted to accelerate heavier projectiles to velocities above 2000 m/s. For this a new type of projectile including a payload section was developed. In this paper the results of the experiments with payload projectiles using a primary energy between 3.8 MJ and 4.8 MJ are discussed.

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Improved the surface properties of carbon fiber through hyperbranched polyaryletherketone sizing

Wang

Chen

et al. 2022

Polymer Composites

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A heat‐resistant soluble hyperbranched polyaryl ether ketone (HPAEK) is synthesized as the main resin of sizing agent and coated on the surface of carbon fiber (CF) with active group. As a result, the monofilament tensile strength of CF is increased by 12.00% and due to the improved fiber surface wettability and interface compatibility between CF and polyether ether ketone (PEEK), a 68.29% increase of interlaminar shear strength is achieved.

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Development of Advanced Thermoplastic Composite Projectiles for High-Velocity Shots With the PEGASUS Railgun

Cited by 10 publications

References 5 publications

Single-Shot Performance of RAFIRA

Single-Shot Performance of RAFIRA

Experiments to Increase the Used Energy With the PEGASUS Railgun

Improved the surface properties of carbon fiber through hyperbranched polyaryletherketone sizing

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