Failure analysis of a high precision deployable reflector in TED test

Wang, Pengpeng; Wang, Xudong; Jiang, Wei

doi:10.1016/j.engfailanal.2020.104482

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…According to the corresponding material, ply design and ply angle deviation control, the 2.6m polygonal back structure reflector was manufactured. The thermal deformation test was carried out using the photogrammetric method [12][13], and the equipment was the MPS/FP single-camera industrial photogrammetric system. Test status in the thermal vacuum tank is shown in figure 10.…”

Section: Verification and Discussionmentioning

confidence: 99%

“…2) According to the normal distribution and the required value of ply angle deviation ±δ (δ=0.5°, 1°), it can be generated N sample values of deviation angle with M layers by equation (12) in @Matlab software. In terms of the μ test method [19], take N equal to 100.…”

Section: Thermal Deformation Analysis Based On Normal Distribution Ra...mentioning

confidence: 99%

“…Domestic scholars had studied reflector materials, reflector structures [6][7][8][9][10][11],and thermal deformation test methods [2,[12][13]. We know the deviation of ply angle can cause the nonaxisymmetric deformation of the laminated plate, and the deformation will lead to a undesirable thermal deformation of the reflector.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of ply angle deviation and thermal deformation behavior of CFRP reflector

Jiang,

Huo

et al. 2023

J. Phys.: Conf. Ser.

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As we know, the ply angle deviation of Carbon Fiber Reinforced Polymer(CFRP) reflector is difficult to obtain accurately in engineering applications, it will make thermal deformation of reflector unpredictable due to the discreteness of ply angle. In this paper, based on constitutive relationships between generalized internal force and strain of laminated composite, a novel ply angle deviation model based on normal distribution is proposed. Furthermore, an orthogonal test was designed and significance analysis were carried out by means of a 2.6m aperture reflector with polygonal back structure. Assumed that the ply angle deviation obeys normal distribution, a number of samples were further randomly generated, and the sample mean and standard deviation of the thermal deformation of reflector were calculated. According to χ2-test of goodness of fit, the thermal deformation of reflector still follows normal distribution. Finally, an example was employed to verify the validity and effectiveness of the proposed method. The results reach a good agreement with the experimental data, thus it is capable of providing a promising prospect for engineering practice.

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Section: Verification and Discussionmentioning

confidence: 99%

Section: Thermal Deformation Analysis Based On Normal Distribution Ra...mentioning

confidence: 99%

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Numerical simulation of ply angle deviation and thermal deformation behavior of CFRP reflector

Jiang,

Huo

et al. 2023

J. Phys.: Conf. Ser.

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“…The narrower spot beam demand on the antenna also highlights the importance of accurate pointing; otherwise, system electrical performance may be greatly deteriorated. For example, a sharp reduction of 2 dB is found in a Ku band multibeam antenna as a depointing of 0.12 ° [15]. Usually, pointing error of the antenna consists of deployment repeatability error, alignment error of the satellite platform, assembly error of the antenna, and thermal induced error.…”

Section: Introductionmentioning

confidence: 99%

Active Pointing Compensation of a HTS Multibeam Antenna

Wang,

Wang

2024

International Journal of Aerospace Engineering

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Active pointing compensation of a High Throughput Satellite (HTS) multibeam antenna via microfiber composites (MFCs) is studied in this paper. Electrical-mechanical coupling analysis of MFCs is conducted to quantitatively determine driving forces and moments of MFCs attached on a carbon fiber reinforced composite (CFRP) laminate, and a positive correlation relationship is observed for driving ability versus thickness of the laminate. By different driving strategies, MFCs could act in bending mode and torsioning mode for structural deformation control, and driving efficiency of the MFCs on a multibeam antenna is studied. Thermal distortion of the antenna under a typical in orbit thermal distribution causes the reflector to rotate about y axis with an pointing error of 0.005°, active compensation is conducted, and the final compensation results show that with an optimal voltage of 432 V, pointing error of the antenna is greatly compensated, and the depointing angle is corrected to be 0.00004°.

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Failure analysis of a high precision deployable reflector in TED test

Cited by 2 publications

References 12 publications

Numerical simulation of ply angle deviation and thermal deformation behavior of CFRP reflector

Numerical simulation of ply angle deviation and thermal deformation behavior of CFRP reflector

Active Pointing Compensation of a HTS Multibeam Antenna

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