Deployment analysis of the Olympus Astromast and comparison with test measurements

Eiden, Michael; Brunner, O.; Stavrinidis, C.

doi:10.2514/3.25873

Cited by 13 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By comparing the three results in phase B, it can be found that the numerical result is a constant value because it is obtained while ignoring the mast deployment dynamic effects, and both simulation and test results fluctuate periodically near the numerical results. The main reason for the periodic fluctuation of the axial development force is the reflection of energy conversion when a section is unrolled in the local coil mode, which can be called "snap through" [16]. At this moment, the deformation energy of longerons and battens is quickly transformed into the kinetic energy of the top plate, resulting in a sudden increase in the axial development force.…”

Section: Validation Of Axial Deploymentmentioning

confidence: 99%

An Iterative Determination Method of an Axial Deployment Force of a Lanyard-Deployed Coilable Mast in Local Coil Mode

Liu,

Sun,

Huang

et al. 2024

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

The axial deployment force is an indispensable parameter of a lanyard-deployed coilable mast, which reflects its load capacity in practical applications. However, research on the axial deployment force in the literature is very limited, and there are no mature numerical methods to determine this parameter in the design stage of coilable masts. In this paper, a numerical method for determining the axial deployment force of a lanyard-deployed coilable mast in the local coil mode is presented. Through this method, the designer can quickly obtain the estimated value of the axial deployment force in the design stage, which is convenient for the quantitative design of parameters. To verify the correctness of the proposed method, a dynamic simulation of the coilable mast is carried out, and a microgravity test is performed. The comparison results show that the error between the numerical method and the simulation and experimental results is less than 5%, which proves the correctness of the proposed method. In addition, the coilable mast studied in this paper has been verified by an actual microsatellite deployment in orbit.

show abstract

Section: Validation Of Axial Deploymentmentioning

confidence: 99%

An Iterative Determination Method of an Axial Deployment Force of a Lanyard-Deployed Coilable Mast in Local Coil Mode

Liu,

Sun,

Huang

et al. 2024

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

show abstract

“…Hence, the deployment mechanism must be endowed with sufficient strengths and stiffness to ensure it to be free from failures such as fracture and disconnection and unexpected elastic and plastic deformations under given endurable mechanical environmental testing conditions. The mechanical responses generated do not affect use performance of the equipment and should satisfy the stipulated safety margin [8][9] . Structural design of the equipment warrants check analysis of strength and rigidity.…”

Section: Technical Requirements Of Preparing the Deployment Mechanismmentioning

confidence: 99%

“…As a key part of the mechanism for Langmuir probes, the deployable mechanism must be endowed with sufficient strength and stiffness. To ensure Langmuir probes to be free from damage under given mechanical experimental testing conditions, finite element analysis of the mechanism of Langmuir probes is of significance to research and preparation of Langmuir probes [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of the developable mechanism of langmuir probes

Liu,

Chen,

Lin

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

View full text Add to dashboard Cite

According to the design requirement of the deployable mechanism for Langmuir probes, a modal analysis was conducted on the mechanism to further establish a three-dimensional deployable mechanism model of Langmuir probes. Using ANSYS for finite element analysis, the structural stability, stress and strain of the deployable mechanism for Langmuir probes which are at the locking state and subjected to sinusoidal vibration and effects of temperature-induced loads were analyzed. On this basis, the values and distribution states of stress and strain were calculated to verify service life and reliability of the deployable mechanism for Langmuir probes in the space environment.

show abstract

“…Murphey proposed methods for weight-optimal design of booms and for the rational judgment of boom performance [7,8]. Eiden et al presented a continuous-longeron space mast which can change from a helical coiled state into a straight deployed configuration [9]. However, for the large-scaled membrane antenna, the space thermal environment will inevitably induce deformation to the supporting structure, affecting the shape accuracy of the membrane [10].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Large-Scale Double-Level Guyed Mast for Membrane Antennas

Liu

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

This paper proposes a double-level guyed membrane antenna for stiffness improvement of a large-scale tri-prism deployable mast using the collapsible tubular mast (CTM). Initially, the construction of the antenna and the modeling of the CTM boom are illustrated. Afterwards, the central mast with isosceles triangular cross section is mathematically equivalent to a continuum beam, in which the equations of motion and the constitutive relations are derived. Based on the equivalent central beam, the double-level guyed mast for the membrane antenna is modeled as a 2(3-SPS-S) mechanism, and then velocity Jacobian matrices and stiffness matrices of SPS branches are constructed. Additionally, the total stiffness matrix of the equivalent mechanism is derived with the principle of virtual work and then evaluated as an accurate approach. Finally, with the aim to improve the static stiffness of the double-level guyed mast, the numerical analysis using the Genetic Algorithm (GA) is carried out for optimizing the distribution of guys in terms of anchor positions and attachment heights.

show abstract

Deployment analysis of the Olympus Astromast and comparison with test measurements

Cited by 13 publications

References 0 publications

An Iterative Determination Method of an Axial Deployment Force of a Lanyard-Deployed Coilable Mast in Local Coil Mode

An Iterative Determination Method of an Axial Deployment Force of a Lanyard-Deployed Coilable Mast in Local Coil Mode

Finite element analysis of the developable mechanism of langmuir probes

Modeling and Analysis of a Large-Scale Double-Level Guyed Mast for Membrane Antennas

Contact Info

Product

Resources

About