Optimization Design of the Spaceborne Connecting Structure for a Lightweight Space Camera

Shao, Mengqi; Zhang, Lei; Jia, Xin-Hong

doi:10.3390/app10228249

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…Another research [166] centred on optimising spaceborne connecting structures to reduce camera drift, employing variable density TO and sensitivity analysis. The optimised structure demonstrated a 54% lightweight ratio and reduced relative displacements between mirrors.…”

Section: Cases Of Study Regarding the Simp Methodmentioning

confidence: 99%

Iterative design of satellite structures and topology optimisation methods

Hurtado-Pérez,

Pablo-Sotelo,

Ramírez-López

et al. 2024

J. Phys.: Conf. Ser.

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Satellite launches are critical amid increasing demands for advanced services. Rising costs urge innovation in engineering. Enhancing satellite structural integrity during launches is crucial due to intense vibrations. Topology optimisation and additive manufacturing converge as promising solutions. Topology optimisation uses mathematical techniques to iteratively improve structures by reducing mass while enhancing attributes like load capacity. This field, active for about three decades, employs continuum and discrete algorithms to optimise structures. Recent trends show optimised structures through topology optimisation and additive manufacturing promise cost-effective and high-performance solutions. This study aims to extensively review topology optimisation methods, specifically focusing on satellite structures, to shape future developments within the years to come.

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Section: Cases Of Study Regarding the Simp Methodmentioning

confidence: 99%

Iterative design of satellite structures and topology optimisation methods

Hurtado-Pérez,

Pablo-Sotelo,

Ramírez-López

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…An optimisation method for the spaceborne connecting structure considering the camera line of sight (LOS) drift is presented in [500], where a variable density TO method is utilised. The objective of the article is to optimise the optomechanical structure of the camera so that it achieves a high lightweight ratio considering the camera drift.…”

Section: Optimisation Design Of the Spaceborne Connecting Structure F...mentioning

confidence: 99%

“…The objective of the article is to optimise the optomechanical structure of the camera so that it achieves a high lightweight ratio considering the camera drift. The following key steps are taken in [500]:…”

Section: Optimisation Design Of the Spaceborne Connecting Structure F...mentioning

confidence: 99%

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

Hurtado-Pérez,

Pablo-Sotelo,

Ramírez-López

et al. 2023

Aerospace

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Launching satellites into the Earth’s orbit is a critical area of research, and very demanding satellite services increase exponentially as modern society takes shape. At the same time, the costs of developing and launching satellite missions with shorter development times increase the requirements of novel approaches in the several engineering areas required to build, test, launch, and operate satellites in the Earth’s orbit, as well as in orbits around other celestial bodies. One area with the potential to save launching costs is that of the structural integrity of satellites, particularly in the launching phase where the largest vibrations due to the rocket motion and subsequent stresses could impact the survival ability of the satellite. To address this problem, two important areas of engineering join together to provide novel, complete, and competitive solutions: topology optimisation methods and additive manufacturing. On one side, topology optimisation methods are mathematical methods that allow iteratively optimising structures (usually by decreasing mass) while improving some structural properties depending on the application (load capacity, for instance), through the maximisation or minimisation of a uni- or multi-objective function and multiple types of algorithms. This area has been widely active in general for the last 30 years and has two main core types of algorithms: continuum methods that modify continuous parameters such as density, and discrete methods that work by adding and deleting material elements in a meshing context. On the other side, additive manufacturing techniques are more recent manufacturing processes aimed at revolutionising manufacturing and supply chains. The main exponents of additive manufacturing are Selective Laser Melting (SLM) (3D printing) as well as Electron Beam Melting (EBM). Recent trends show that topology-optimised structures built with novel materials through additive manufacturing processes may provide cheaper state-of-the-art structures that are fully optimised to better perform in the outer-space environment, particularly as part of the structure subsystem of novel satellite systems. This work aims to present an extended review of the main methods of structural topology optimisation as well as additive manufacture in the aerospace field, with a particular focus on satellite structures, which may set the arena for the development of future satellite structures in the next five to ten years.

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Design of a 2 m Primary Mirror Assembly Considering Fatigue Characteristics

Wang

et al. 2022

Applied Sciences

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The design requirements of a 2 m mirror assembly installed on a large space optical remote sensor are investigated in this study. The mirror body and rigid connectors are designed using topology and size optimization methods. The initial design scheme of flexible supports is then proposed through an in-depth exploration of fatigue failure mechanism caused by impacts of size parameters, thermal–mechanical vibration, and surface abrasion. The comprehensive analysis mode of the flexible support structure is established with the help of finite element and fatigue analysis software programs. The designed mirror surface error under composited force is 5.6 nm, first natural vibration mode is 119.16 Hz, and fatigue life synthesizing thermal–mechanical vibration is about 21,790,000 cycles, thereby meeting the design requirements. The first natural vibration mode, acceleration response, and stress responses of sine and random vibration are verified with experiments, and the findings are compared with the theoretical analysis results. The analysis mode can successfully and significantly improve the reliability of the mirror assembly and help optimize the design of flexible supports.

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Optimization Design of the Spaceborne Connecting Structure for a Lightweight Space Camera

Cited by 3 publications

References 18 publications

Iterative design of satellite structures and topology optimisation methods

Iterative design of satellite structures and topology optimisation methods

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

Design of a 2 m Primary Mirror Assembly Considering Fatigue Characteristics

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