Enhanced space debris shields for manned spacecraft

Destefanis, R.; Schäfer, F.; Lambert, M.; Faraud, M.; Schneider, E.

doi:10.1016/j.ijimpeng.2003.09.019

Cited by 32 publications

(14 citation statements)

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“…For impact on open-cell metallic foams, secondary impacts between projectile and bumper fragments on individual foam ligaments is expected to reproduce the multi-shock concept, leading to fragmentation, melting, and vaporization at lower impact velocities. Tests on a foam bumper configuration for ESA's Columbus module [5] found evidence of incipient melting at velocities as low as 2.6 km/s, with complete melt reported at 4 km/s. In comparison, for impact on a metallic Whipple shield complete melt is calculated to occur upon release for 1-D impacts between 7-8 km/s [7] and above 8 km/s in 2D hydrocode calculations [8].…”

Section: Hypervelocity Impact (Hvi) On Open-cell Foam Sandwich Panelsmentioning

confidence: 99%

“…Towards this goal, recent MMOD shielding designs have incorporated intermediate fabric layers [2], multiple bumper plates [3], and laminated composite plates [4], to achieve significant increases in capability while maintaining Whipple's underlying concept. However, a substantial percentage of the dedicated mass of these shields (up to 35% [5]) can be consumed as non-ballistic mass required for installation (stiffeners, fasteners, etc. ).…”

Section: Introductionmentioning

confidence: 99%

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Development of the Next Generation of Meteoroid and Orbital Debris Shields

Ryan¹,

Christiansen²,

Lear³

et al. 2009

AIP Conference Proceedings

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Abstract. The novel structure of metallic foams is of interest in the design of next-generation debris shields as it introduces physical mechanisms that are advantageous to hypervelocity impact shielding (e.g. increased fragmentation/melt/vaporization, energy dissipation, etc.). Preliminary investigations have shown improved shielding capability over traditional spacecraft primary structures. In this paper, the results of a current hypervelocity impact test program on metallic open-cell foam core sandwich panels are reported. A preliminary ballistic limit equation has been derived from the experimental results, and is presented in a form suitable for implementation in risk assessment software codes.

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Section: Hypervelocity Impact (Hvi) On Open-cell Foam Sandwich Panelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of the Next Generation of Meteoroid and Orbital Debris Shields

Ryan¹,

Christiansen²,

Lear³

et al. 2009

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Inspired by the need to design protection for habitable modules of the International Space Station, most of the up-todate investigations consider hypervelocity impacts of large, centimeter-size objects on different kinds of bumpers and protective layers (e.g., [3,4]). Contrarily, only a few studies exist that deal with protecting against small orbital debris [1].…”

Section: Introductionmentioning

confidence: 99%

“…Experimental studies conducted by NASA [7,8] showed that so-called mesh double-bumper shield, consisting of spaced discrete (mesh), continuous (aluminum plates), and flexible (fabrics) layers, may have lower ballistic weight compared to the conventional shield with a continuous bumper. It should be noted, however, that shielding systems with multiple spaced layers typically require higher nonballistic parasitic weight for fasteners, spacers, and so forth [4]. In addition, use of multiwall shielding systems for protection against millimeter-sized objects may be impractical, as it may result in very low thickness of individual layers, which can easily buckle and permanently deform during satellite launching.…”

Section: Introductionmentioning

confidence: 99%

Fragmentation of Millimeter-Size Hypervelocity Projectiles on Combined Mesh-Plate Bumpers

Cherniaev

Telichev

2017

Advances in Materials Science and Engineering

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This numerical study evaluates the concept of a combined mesh-plate bumper as a shielding system protecting unmanned spacecraft from small (1 mm) orbital debris impacts. Two-component bumpers consisting of an external layer of woven mesh (aluminum or steel) directly applied to a surface of the aluminum plate are considered. Results of numerical modeling with a projectile velocity of 7 km/s indicate that, in comparison to the steel mesh-combined bumper, the combination of aluminum mesh and aluminum plate provides better fragmentation of small hypervelocity projectiles. At the same time, none of the combined mesh/plate bumpers provide a significant increase of ballistic properties as compared to an aluminum plate bumper. This indicates that the positive results reported in the literature for bumpers with metallic meshes and large projectiles are not scalable down to millimeter-sized particles. Based on this investigation's results, a possible modification of the combined mesh/plate bumper is proposed for the future study.

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“…Bu gelişmelere bağlı olarak metalik köpüklerin morfolojik ve mikro yapısal özellikleri ile ilgili mekanik davranışların belirlenmesine yönelik önemli çalışmalar mevcuttur [1,[4][5][6][7][8]. Alüminyum köpüklerin düşük ve yüksek darbe yükleri altında enerji sönümleme kapasitelerini incelemek amacıyla farklı çalışmalar yapılmıştır [9][10][11]. Örneğin metalik köpüklerin statik girinti ve penetrasyon özelliklerinin belirlenmesi üzerine yapılan çalışmalarda köpüğün yalnızca delici ucun temas ettiği bölgede plastik deformasyona uğradığı belirtilmiştir [8,12].…”

Section: Gi̇ri̇ş (Introduction)unclassified

TOZ METALURJİSİ YÖNTEMİYLE ÜRETİLEN AlSi7 KÖPÜKLERİN DÜŞÜK HIZLI DARBE ENERJİLERİ ALTINDA PENETRASYON DAVRANIŞININ İNCELENMESİ

Çinici¹,

Gökmen²,

Uzun³

et al. 2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmada AlSi7 köpüklerin düşük hızlı darbe enerjileri altındaki penetrasyon davranışları incelenmiştir. Bu amaçla toz metalurjisi yöntemi ile üretilen 55x55x20 mm boyutlarında Al köpüklere ağırlık düşürme test cihazı kullanarak farklı hızlarda (1,2 -3 ms -1 ) darbeler uygulanmıştır. Bir numune üzerinde delinme meydana gelene kadar yapılan darbe testleri ile saplanma ve delinme darbe davranışları incelenmiştir. Darbe sonrası numunelerin içyapılarında meydana gelen değişiklikler makro boyutta incelenmiştir.Anahtar kelimeler: Darbe enerjisi, alüminyum köpük, toz metalurjisi INVESTIGATION OF THE PENETRATION BEHAVIOR OF AlSi7 FOAM, PRODUCED BY POWDER METALLURGY METHOD, UNDER LOW-VELOCITY IMPACT ENERGIES ABSTRACTIn this study, the impact behaviors of AlSi7 foams under low-velocity impact energies were investigated. The low-velocity impacts (1,2 -3 ms -1 ) were applied to the samples with 55x55x20 mm dimensions using the weight drop test machine. The impact tests were performed until perforation took place on a sample and so penetration and perforation impact behavior were analyzed. The changes in the internal structures of the samples after the impact were observed in the macro level.

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Enhanced space debris shields for manned spacecraft

Cited by 32 publications

References 0 publications

Development of the Next Generation of Meteoroid and Orbital Debris Shields

Development of the Next Generation of Meteoroid and Orbital Debris Shields

Fragmentation of Millimeter-Size Hypervelocity Projectiles on Combined Mesh-Plate Bumpers

TOZ METALURJİSİ YÖNTEMİYLE ÜRETİLEN AlSi7 KÖPÜKLERİN DÜŞÜK HIZLI DARBE ENERJİLERİ ALTINDA PENETRASYON DAVRANIŞININ İNCELENMESİ

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