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Ring, Alexander and Sakraker, Isil and Hümbert, Simon and Lips, Tobias and Blender, Frank (2025) Additively Manufactured and Self Activating Hybrid Demisable Joint Design for Large Satellite Platforms. 9th Space Debris Conference, 2025-04-01 - 2025-04-04, Bonn, Germany.
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Abstract
The increasing number of rocket-launches and satellite constellations has heightened concerns over space debris and the risks associated with uncontrolled atmospheric re-entry. Design for Demise (D4D) aims to mitigate these risks by ensuring satellite structures disintegrate at high altitudes, reducing debris casualty area (DCA). This study investigates novel demisable joint concepts for primary satellite structures, utilizing additively manufactured inserts complemented by passive ejection mechanisms such as Shape Memory Alloy (SMA) actuators and compression springs. Using ESA’s Sentinel-6 (S6) mission as a reference, hybrid-material joints were designed, analyzed, and tested. Simulations demonstrated their ability to withstand launch loads. Re-entry analysis and thermal simulations indicated structural breakup at altitudes up to 115 km, achieving a 60% reduction in DCA area compared to the reference configuration without demisable joints. Physical prototypes tested at DLR facilities validated these findings. The results demonstrate the effectiveness of demisable joints in enhancing satellite structural breakup during re-entry, contributing to improved space debris mitigation.
| Item URL in elib: | https://elib.dlr.de/213632/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | Additively Manufactured and Self Activating Hybrid Demisable Joint Design for Large Satellite Platforms | ||||||||||||||||||||||||
| Authors: |
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| Date: | 25 March 2025 | ||||||||||||||||||||||||
| Refereed publication: | No | ||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| Keywords: | satelliltes, demisable joints, additive manufacturing, 3D printing, design-for-demise, thermoplastics, SMA | ||||||||||||||||||||||||
| Event Title: | 9th Space Debris Conference | ||||||||||||||||||||||||
| Event Location: | Bonn, Germany | ||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||
| Event Start Date: | 1 April 2025 | ||||||||||||||||||||||||
| Event End Date: | 4 April 2025 | ||||||||||||||||||||||||
| Organizer: | ESA | ||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||||
| HGF - Program Themes: | Space Transportation | ||||||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
| DLR - Program: | R RP - Space Transportation | ||||||||||||||||||||||||
| DLR - Research theme (Project): | R - Project Technologies for Space Debris Mitigation [RP] | ||||||||||||||||||||||||
| Location: | Stuttgart | ||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Structures and Design > Space System Integration Institute of Structures and Design > Design and Manufacture Technologies | ||||||||||||||||||||||||
| Deposited By: | Sakraker, Isil | ||||||||||||||||||||||||
| Deposited On: | 11 Apr 2025 17:06 | ||||||||||||||||||||||||
| Last Modified: | 03 Sep 2025 08:59 |
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- Additively Manufactured and Self Activating Hybrid Demisable Joint Design for Large Satellite Platforms. (deposited 11 Apr 2025 17:06) [Currently Displayed]
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