Carbon Fiber Truss Support Technology for JL-1 Light High Resolution Space Camera

Kexin Song; Lei Zhang; Xuezhi Jia; Zhiqiang Su

doi:10.3788/AOS202040.2122002

Acta Optica Sinica, Volume. 40, Issue 21, 2122002(2020)

Carbon Fiber Truss Support Technology for JL-1 Light High Resolution Space Camera

Kexin Song¹, Lei Zhang^1,2, Xuezhi Jia^1,2、*, and Zhiqiang Su¹

Author Affiliations

¹Chang Guang Satellite Technology Co., Ltd., Changchun, Jilin 130102, China

²Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130022, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(13)

Fig. 1. Schematic of positional relationship between primary and secondary mirrors

Download full size

Fig. 2. Configuration of secondary mirror support structure. (a) Thin-walled tube type; (b) thin-walled tube truss combined type

Download full size

Fig. 3. Size optimization strategy of main bearing system. (a) Main bearing structure; (b) tube wall structure; (c) limit force state of thin-walled tube; (d) truss cross-sectional configuration; (e) single truss limit force state

Download full size

Fig. 4. 1^st order shape of truss

Download full size

Fig. 5. Stability detection device of CFRP truss structure

Download full size

Fig. 6. Randomly scan vibration data

Download full size

Fig. 7. Satellite remote sensing image

Download full size

Fig. 8. Dynamic MTF curves

Download full size

Table 1. Comparison of performance parameters of secondary mirror support structure
View table
Table 1. Comparison of performance parameters of secondary mirror support structure
Structure type Material Mass /kg Base frequency /Hz Power /W
Cylinder type TC4 4 288 5.2
Cylinder/truss type TC4 3 254 1.4

Table 2. Central position of subreflector changes in different directions under action of gravity and thermal loads
View table
Table 2. Central position of subreflector changes in different directions under action of gravity and thermal loads
Load Parameter X Y Z
Gravity Position /μm 3.1 3.9 5.0
Title /(″) 2.6 2.9 0.7
Thermal Position /μm 0.7 0.6 5.8
Title /(″) 0.9 1.1 1.2

Table 3. Jitter results of visual axis in image plane coordinate system
View table
Table 3. Jitter results of visual axis in image plane coordinate system
Frequency /Hz X /μm Y /μm R /μm
186 0.05 0.24 0.25
220 0.02 0.10 0.10
287 0.30 1.82 1.84
493 0.01 0.29 0.29

Table 4. Stability test results of CFRP truss structure

View table

Table 4. Stability test results of CFRP truss structure

Stage	Angle	Gravity load	Thermal load	Before vibration	After vibration
Initial	Pitch angle ${ψ_{1}}_{}$ /(°)	90.75215	90.53844	90.75215	90.64923
Initial	Orientation ${O_{1}}_{}$ /(°)	0.00000	0.00000	0.00000	0.00000
Final	Pitch angle ${ψ_{2}}_{}$ /(°)	90.75228	90.53864	90.75228	90.64938
Final	Orientation ${O_{2}}_{}$ /(°)	0.00011	0.00026	0.00011	0.00018
$\|ψ_{1} - ψ_{2}\|$ /(″)		0.468	0.720	0.468	0.540
$\|O_{1} - O_{2}\|$ /(″)		0.396	0.936	0.396	0.648

Table 5. Comparison of characteristic frequencies obtained by process engineering analysis and experimental testing in different ordersunit: Hz
View table
Table 5. Comparison of characteristic frequencies obtained by process engineering analysis and experimental testing in different ordersunit: Hz
Order 1^st 2^nd 3^rd 4^th
Test 174 225 293 503
Engineering 186 220 287 493

Tools

Get Citation

Copy Citation Text

Kexin Song, Lei Zhang, Xuezhi Jia, Zhiqiang Su. Carbon Fiber Truss Support Technology for JL-1 Light High Resolution Space Camera[J]. Acta Optica Sinica, 2020, 40(21): 2122002

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Optical Design and Fabrication

Received: Apr. 25, 2020

Accepted: Jul. 17, 2020

Published Online: Nov. 2, 2020

The Author Email: Jia Xuezhi (xuezhi0817@163.com)

DOI:10.3788/AOS202040.2122002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Comparison of performance parameters of secondary mirror support structure

Table 1. Comparison of performance parameters of secondary mirror support structure

Table 2. Central position of subreflector changes in different directions under action of gravity and thermal loads

Table 2. Central position of subreflector changes in different directions under action of gravity and thermal loads

Table 3. Jitter results of visual axis in image plane coordinate system

Table 3. Jitter results of visual axis in image plane coordinate system

Table 4. Stability test results of CFRP truss structure

Table 4. Stability test results of CFRP truss structure

Table 5. Comparison of characteristic frequencies obtained by process engineering analysis and experimental testing in different ordersunit: Hz

Table 5. Comparison of characteristic frequencies obtained by process engineering analysis and experimental testing in different ordersunit: Hz