CEAS Space Journal

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An early warning system for payloads’ operations in the European International Space Station (ISS) Columbus module
CEAS Space Journal - Tập 11 - Trang 247-254 - 2019
A. Bade, E. Wolf, H. Lühdorff, F. Annaloro, M. Ferrino
Since the Columbus module became part of the ISS in 2008, it provided research opportunities in special experiment facilities for fluid physics (e.g. for crystallization processes, emulsion stability), biology (housing, e.g. small plants and invertebrates) and human research (ageing process, osteoporosis, etc.). In addition, the Columbus Centre Aisle (ambient conditions, i.e. 18–27 °C at 965–1027 ... hiện toàn bộ
A shape design optimization methodology based on the method of characteristics for rocket nozzles
CEAS Space Journal - Tập 15 - Trang 867-879 - 2023
Tiago Fernandes, Alain Souza, Frederico Afonso
Even though shape optimization is a powerful tool for designing aerospace vehicles, it can be time-consuming when high-fidelity models are employed. Thus, lower-fidelity simulations covering a wider design space can be a solution for shape optimization in the early design phases. With this in mind, the present work aims to develop a low-fidelity and fast method to conduct nozzle shape optimization... hiện toàn bộ
Evaluation and optimization of heat transfer at the interfaces of spacecraft assemblies
CEAS Space Journal - - 2018
Simon Vandevelde, Alain Daidié, Marc Sartor
This paper presents the experimental and numerical work achieved in the aim of evaluating the heat transfer at the interfaces of threaded spacecraft assemblies, where Thermal Interface Materials (TIMs) are placed between two surfaces to improve the thermal performance. Developing a model to predict thermal resistance for such an assembly is a serious challenge, which has to take various influencin... hiện toàn bộ
Beyond L∞ reaction wheel commanding: increased on-board autonomy through enhanced wheel failure handling
CEAS Space Journal - Tập 10 - Trang 597-604 - 2018
Stefan Winkler, Maik Evers, Benjamin Kraft
Latest large spacecraft and/or agility requirements have led to configurations of five or more reaction wheels. To avoid (1) handling a significant amount of pre-stored parameters on board and (2) intervening by ground (classical approach) to recover single- and multiple-wheel failures, the orthogonal null space basis must be robustly computed on board. Two deterministic methods are presented in t... hiện toàn bộ
Fused silica GRISMs manufactured by hydrophilic direct bonding at moderate heating
CEAS Space Journal - - 2017
G. Kalkowski, Kevin Grabowski, Gerd Harnisch, Thomas Flügel-Paul, Uwe D. Zeitner, Stefan Risse
GREATCUBE+: conceptual design tool for CubeSat’s design
CEAS Space Journal - - 2024
Carlo Girardello, Martin Tajmar, Carsten Scharlemann
AbstractCubeSats are a type of spacecraft which have become popular since the early 2000. They are known for their quick development time and low cost, when comparing them to larger satellites. However, there is a significant drawback which has been recorded during these years of operations, namely an high failure rate which turns almost half of them into space debris. The reasons behind these mal... hiện toàn bộ
NanoCarb hyperspectral sensor: on performance optimization and analysis for greenhouse gas monitoring from a constellation of small satellites
CEAS Space Journal - Tập 11 - Trang 507-524 - 2019
Silvère Gousset, Laurence Croizé, Etienne Le Coarer, Yann Ferrec, Juana Rodrigo-Rodrigo, Laure Brooker
NanoCarb is an innovative Fourier-transform imaging spectrometer dedicated to the measurement of CO2 and CH4. Both its unusual optical principle and sampling strategy allow to reach a compact design, ideal for small satellite constellation as investigated by the European project SCARBO. The NanoCarb performance assessment as well as a proof of concept is required in this framework. We have develop... hiện toàn bộ
Electrical performance verification methodology for large reflector antennas: based on the P-band SAR payload of the ESA BIOMASS candidate mission
CEAS Space Journal - - 2013
Sergey Pivnenko, Oleksiy S. Kim, Jeppe Majlund Nielsen, Olav Breinbjerg, K. Pontoppidan, A. Østergaard, C. C. Lin
Aerothermodynamics and thermal design for on-ground and in-flight testing of a deployable heat shield capsule
CEAS Space Journal - Tập 12 - Trang 411-428 - 2020
Alberto Fedele, Roberto Gardi, Giuseppe Pezzella
The article deals with the aerothermodynamic and thermal analysis of two technological demonstrators suitable for research activities on deployable heatshield entry capsules. Variable geometry bodies represent a formidable way to build low ballistic coefficient entry platforms able to limit convective heat fluxes, mechanical loads, and final descent velocity. These characteristics suggest several ... hiện toàn bộ
Time analysis for a bistatic radar for asteroid tomography: simulations and test bench
CEAS Space Journal - Tập 13 - Trang 653-664 - 2021
Ricardo Granados, Alain Herique, Wlodek Kofman, Sylvain Rochat, Bruno Travers
The study of asteroids interior is crucial to the understanding of their accretion in the early Solar System. Furthermore, space-borne sounding radar is the most mature technique to image asteroid’s internal structure. The low-frequency radar is a bistatic radar measuring the radar wave propagation between a Lander and an Orbiter through the asteroid. Time accuracy and frequency stability are fund... hiện toàn bộ
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