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Unveiling the Importance of Demisability Testing: Precision and Simplicity with Our Radiant Heater Service

By |2024-02-20T09:07:12+01:0020. February 2024|Space|

In the realm of re-entry testing, ensuring the safe disintegration of returning spacecraft parts is paramount. At AAC, we underscore the critical significance of demisability tests. These tests simulate the early stages of re-entry and indicate that components disintegrate already at high altitude during re-entry, mitigating potential damage and safeguarding the overall integrity of your mission. Discovering a Straightforward Solution for Precise Demisability Testing Our radiant heater service offers a simplified yet highly precise solution [...]

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Enhancing Satellite Resilience: The Practical Significance of Thermal Vacuum Bakeouts for MLI in Satellite Missions

By |2024-02-14T09:22:29+01:0014. February 2024|Space|

Operating in the challenging environment of space, satellites contend with extreme temperature fluctuations, radiation exposure, and the vacuum of the cosmos. Essential for fortifying these satellites against such harsh conditions and ensuring their longevity, Multi-Layer Insulation (MLI) emerges as a key protective measure. This thermal insulation method, comprised of reflective foil layers separated by low-conductance spacer materials, plays a pivotal role in regulating temperature and maintaining the resilience of satellites in the unpredictable realm of [...]

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Outgassing of materials in vacuum

By |2024-01-30T08:06:36+01:0030. January 2024|Space|

Outgassing of materials in vacuum is often treated neglectfully. Typically, only one side of the equation is considered, such as the loss of oil in a bearing. However, the potentially fatal consequences of oil resublimation onto an optical instrument may be ignored. - There is no one in space to wipe down a lens that has a hazy film of oil on it. As a rule of thumb, warm surfaces are more likely to outgas [...]

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Diversified Excellence: AAC’s Multidisciplinary Approach to Advanced Solutions

By |2024-01-24T12:45:36+01:0024. January 2024|Unkategorisiert|

In the dynamic landscape of advancements, companies often find themselves specializing in narrow scientific and technological domains. At Aerospace & Advanced Composites (AAC), our operational model covers a variety of activities from sliprings for space applications to characterizing cold welding of materials, or from developing coatings for special terrestrial applications to working on structural health monitoring for CFK components. Our team comprises a diverse group of scientists and technicians, each specializing in different fields. While [...]

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The mysteries of slip rings

By |2023-11-20T14:52:05+01:0020. November 2023|Consulting, Energy, Industry, Space|

A slip ring (in electrical engineering terms) is a method of making an electrical connection through a rotating assembly. Slip rings, also called rotary electrical interfaces, rotating electrical connectors, collectors, swivels, or electrical rotary joints, are commonly found in all rotary systems with electrical connections of sensors and receptors. They are a common building block in terrestrial and space applications, e.g. wind turbines, computer tomography scanners, solar arrays in space and many more. Tribological characterization [...]

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Revolutionizing Materials Testing: Unleashing the Potential of High-Temperature, High-Pressure Experiments for Coatings, Sheets, and Beyond!

By |2023-11-14T10:59:52+01:0014. November 2023|Energy, Industry|

Novel materials and products, before their final application, must undergo a series of rigorous tests to demonstrate their ability to withstand physical, chemical, and/or environmental challenges. Autoclave testing provides a comprehensive evaluation by subjecting the materials to a combination of liquid, temperature, pressure, and, when necessary, different atmospheric conditions (such as air, Ar, N2) to simulate real-world scenarios in a controlled laboratory environment. These conditions are highly effective for simulating extreme conditions and rapidly assessing [...]

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Mikrostrukturanalyse bei AAC: Expertise in Werkstoff- & Bauteilanalyse

By |2023-10-30T08:30:36+01:0030. October 2023|Aviation, Consulting, Energy, Industry, Space|

Die Charakterisierung von Materialien und Bauteilen auf makro- und mikroskopischer Ebene ermöglicht eine Vielzahl von verschiedenen Untersuchungen: • Identifizierung von Fehlermechanismen im Zuge von Schadensanalysen. • Qualifikation von neuen Produktionsprozessen und Oberflächenbehandlungen. • Beurteilung von verschiedenartigen Bauteilen (wie z.B. elektrische Kontakte, Komposit-Materialien, Faserverbundwerkstoffe, u.v.m.) • Chemische Analyse der Zusammensetzung von Proben (wie z.B. Struktur von Schichtsystemen). • Post-Test-Analyse nach mechanischen, tribologischen oder thermischen Tests, welche ebenfalls bei AAC durchgeführt werden. Wir legen nicht nur Wert [...]

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Cold welding under space and launch conditions

By |2023-11-24T17:10:08+01:0023. October 2023|Space|

A common failure mode seen during the testing and operation of spacecraft is termed ‘cold-welding’ (‘coldwelding’, ‘contact welding’, ‘adhesion’, ‘sticking’ or ‘stiction’). Coldwelding is a solid-state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. This effect mainly concerns metal-to-metal contacts. It was first recognized as a general materials phenomenon in the 1940s: Clean, flat surfaces of metal might strongly adhere if brought [...]

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CronHard – Achieving Stress Corrosion Cracking Resistance in Bearing Steel

By |2023-10-16T09:45:34+02:0016. October 2023|Space|

Ball bearings are essential components in various mechanical systems, designed for their high hardness to ensure wear resistance and the ability to withstand high contact stresses. For many years, this design philosophy served well as long as traditional bearing configurations with predominantly compressive stresses were prevalent. Stress corrosion cracking (SCC) was not a significant concern in such setups. However, as the industry continues to evolve towards more efficient and lightweight integrated solutions, where bearings are [...]

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Coefficient of Moisture Expansion:
A challenging measurement task

By |2024-01-26T13:06:59+01:0027. September 2023|Space|

A high degree of dimensional stability is often required for aircraft and spacecraft components. In order to evaluate polymeric composite materials for aerospace applications the coefficients of thermal expansion (CTE) and moisture expansion (CME) have to be determined. Coefficient of Moisture Expansion (CME) is defined as the ratio of change in strain and mass variation due to the moisture desorption or absorption.  For the determination of the CME the change of length and the mass [...]

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A challenging measurement task
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