Objective Carbon fiber reinforced polymer (CFRP) lenticular tube wrap-rib reflectors are lightweight, simple in structure, have a high stowage ratio, high deployment reliability, and offer promising application prospects for both small-aperture and several-meter large-aperture deployable antennas. Currently, the application of such deployable reflectors mainly faces two challenges: ensuring the reliability of stowage and deployment strategies under large-deformation wrapping, and achieving and maintaining the surface accuracy of flexible wrap-rib reflectors. This paper proposes a CFRP lenticular tube wrap-rib reflector scheme and investigates its stowage and deployment performance, as well as surface accuracy. Methods First, a 3 m aperture wrap-rib reflector scheme for the X-band was proposed, which includes a central hub, wrap-ribs, metal mesh, side cables, and a locking and unlocking device. The wrap-ribs were made of lightweight, high-strength, and high-stiffness CFRP lenticular tubes, and the [45°/-45°/-45°/45°] lay-up and section design were achieved using prepregs with a single-layer thickness of 0.05 mm. To ensure installation accuracy and deployment rigidity of the wrap-ribs, they were rigidly connected to the central hub. To solve the problem of high stress in the root area of the wrapped wrap-ribs, a method involving the installation of a wrapping guide at the root area of the wrap-ribs was proposed. A finite element model was established based on material parameters obtained from tensile tests, and the stress during the wrapping process of a single CFRP lenticular tube with a wrapping guide was analyzed using an explicit dynamic method. Second, according to the requirements of the X-band, the surface accuracy of the 3 m aperture reflector was estimated using an approximate theoretical formula. The focal length-to-aperture ratio of the reflector and the number of wrap-ribs were determined. Due to the low stiffness of the wrap-rib reflector, the wrap-ribs deform to a certain degree during the reflector forming process, and a back-pillow effect is observed in each sector mesh. Both these factors affect the surface accuracy of the reflector. To address this issue, the shape of the flexible wrap-rib reflector was determined through form-finding analysis. The shape of the lenticular tube wrap-ribs was optimized by combining the form-finding analysis results of the flexible reflector with a genetic algorithm. Finally, a reflector prototype was designed and assembled, and deployment tests, fundamental frequency tests, and surface accuracy measurements were carried out. Results and Discussion Adding a wrapping guide to the root area of the CFRP lenticular tube wrap-rib can prevent excessive wrapping stress in this area and improve the wrapping performance of the wrap-rib reflector. The focal length-to-aperture ratio of the reflector is 0.55, the number of wrap-ribs is 36, and the root mean square error (RMSE) of the estimated surface accuracy calculated using the theoretical formula is 0.89 mm, which meets the application requirements for the X-band. When the upper edge curve of the reflector wrap-rib lies on the design paraboloid, the surface accuracy of the reflector after form-finding analysis is 1.51 mm, which is significantly higher than the 0.89 mm calculated using the theoretical formula. This discrepancy arises because the elastic deformation of the wrap-ribs and the back-pillow effect of the metal mesh cause the mesh to deviate from its initial position after form-finding analysis of the flexible wrap-rib reflector. Taking the root of the wrap-rib as the origin, the curve equation of the wrap-rib after optimization is (0 x 1 410 mm), and the surface accuracy of the reflector is 0.78 mm, which is significantly better than the 1.51 mm obtained before shape optimization of the wrap-rib. By optimizing the shape of the wrap-rib, the surface accuracy of the reflector was effectively improved. The mass of the wrap-rib reflector prototype is approximately 6 kg, and the stowage size is 0.7 m × 0.7 m × 0.15 m. It took approximately 6 s from the time the Dyneema rope was fused until the reflector was fully deployed. The deployment test verified both the stowage mode of the CFRP lenticular tube wrap-rib reflector and the deployment mode driven by the elastic energy of the wrap-ribs. At the same time, the feasibility of the proposed stowage tool and the locking and unlocking device was also verified. The measured fundamental frequency of the deployed reflector prototype is approximately 1.69 Hz, indicating good overall rigidity. In the surface accuracy measurements, the best-fit paraboloid under condition 1 was taken as the reference. The difference in surface accuracy between after installation and after one stowage and deployment cycle is minimal, and it is close to the theoretical design value. After four deployment cycles and three days of placement, the surface error increases slightly but remains below the design target value of 1 mm. The reflector prototype surface has basically achieved the design goal for surface accuracy. The surface accuracy measurement results show that the reflector prototype exhibits stable surface accuracy, although the surface accuracy decreases slightly after long-term stowage and multiple stowage and deployment cycles. Conclusions The results show that the CFRP lenticular tube wrap-rib reflector scheme has the advantages of a simple structure, reduced weight, a high stowage ratio, and good overall rigidity. The wrapping guides and the locking and unlocking device contribute to improving the reliability of stowage and deployment. By optimizing the shape of the wrap-ribs, the flexible wrap-rib reflector can achieve good and stable surface accuracy. The CFRP lenticular tube has the characteristics of reduced weight, easy wrapping, and high rigidity after deployment, making it an important option for wrap-ribs in such reflectors. Further research should be carried out on reflector performance under multiple stowage and deployment cycles, long-term storage conditions, and on-orbit environments, as well as on the maintenance of surface accuracy.
LiuRongqiang, ShiChuang, GuoHongwei,et al.Review of space deployable antenna mechanisms[J].Journal of Mechanical Engineering,2020,56(5):1‒12. doi:10.3901/jme.2020.05.001
LiHao, MaXiaofei, HuoTonglong,et al.Design and analysis of deployment mechanism for solid surface deployment antenna[J].Optics and Precision Engineering,2023,31(22):3305‒3317.
PuLihua, LiuBoxue, MaXiaofei.Research on measurement method of deployment and pointing accuracy of large mesh antenna[J].Space Electronic Technology,2021,18(2):66‒71. doi:10.3969/j.issn.1674-7135.2021.02.011
QinBo, ShengnanLü, LiuQuan,et al.Structural design and analysis of a deployable parabolic-cylinder antenna[J].Journal of Mechanical Engineering,2020,56(5):100‒107. doi:10.3901/jme.2020.05.100
ZhangShuxin, HanXiaotong, YuYiqi.Two-step repeatable deploying and furling mechanism design and prototype verification of a deployable umbrella antenna for CubeSat[J].Journal of Mechanical Engineering,2022,58(7):44‒52. doi:10.3901/JME.2022.07.044
MaXiaofei, LiYang, XiaoYong,et al.Development and tendency of large space deployable antenna reflector[J].Space Electronic Technology,2018,15(2):16‒26. doi:10.3969/j.issn.1674-7135.2018.02.003
ChenGuohui, HuaYue, WangBo,et al.Design and verification for umbrella-type deployable antenna of Chang'e-4 lunar relay satellite[J].Journal of Deep Space Exploration,2018,5(6):524‒530. doi:10.15982/j.issn.2095-7777.2018.06.004
AherneM, BarrettJ, HoagL,et al.Aeneas—Colony I meets three-axis pointing[C].Proceedings of 25th Annual AIAA/USU.Conference on Small Satellites.Logan:AIAA,2011:1‒11.
[22]
ChahatN, HodgesR E, SauderJ,et al.The deep-space network telecommunication CubeSat antenna:Using the deployable ka-band mesh reflector antenna[J].IEEE Antennas and Propagation Magazine,2017,59(2):31‒38. doi:10.1109/map.2017.2655576
[23]
PeralE, TanelliS, StathamS,et al.RainCube:The first ever radar measurements from a CubeSat in space[J].Journal of Applied Remote Sensing,2019,13(3):032504. doi:10.1117/1.jrs.13.032504
[24]
DominocieloG, LanganD.Articulated folding rib reflector for concentrating radiation:US20190214737[P].2019-07‒11.
[25]
ChahatN, HodgesR E, SauderJ,et al.CubeSat deployable ka-band mesh reflector antenna development for earth science missions[J].IEEE Transactions on Antennas and Propagation,2016,64(6):2083‒2093. doi:10.1109/TAP.2016.2546306
[26]
SauderJ F, ChahatN, HodgesR,et al.Designing,building,and testing a mesh ka-band parabolic deployable antenna (KaPDA) for CubeSats[C]//Proceedings of the 54th AIAA Aerospace Sciences Meeting.San Diego:AIAA,2016:2016‒0694. doi:10.2514/6.2016-0694
[27]
FreelandR E, GarciaN F, IwamotoH.Wrap-rib antenna technology development[J].In NASA Langley Research Center Large Space Antenna Systems Technol,1985:139‒166.
[28]
LoveA W.Some highlights in reflector antenna development[J].Radio Science,1976,11(8/9):671‒684. doi:10.1029/rs011i008p00671
[29]
ZhangHan, WuMinger, XiangPing,et al.Design,analysis,and test of an ultra-compact X-band deployable wrap-rib antenna[J].Acta Astronautica,2025,228:918‒930. doi:10.1016/j.actaastro.2025.01.001
[30]
AngevainJ, IhleA, RodriguesG,et al.Large deployable spaceborne reflector antennas in Europe:Progress status and perspectives[C]//2019 13th European Conference on Antennas and Propagation(EuCAP).Krakow:IEEE,2019:1‒5.
[31]
ShoreJ, ViqueratA, RichardsonG,et al.An energy optimisation approach to modelling tape spring behaviour[C]//Proceedings of the AIAA Scitech 2020 Forum.Orlando:AIAA,2020:AIAA2020‒1184. doi:10.2514/6.2020-1184
[32]
YanZhongxi, WuMinger.Analysis and tests of non-uniform wrapping process of tape spring[J].International Journal of Solids and Structures,2023,281:112444. doi:10.1016/j.ijsolstr.2023.112444
[33]
KimK W, ParkY.Systematic design of tape spring hinges for solar array by optimization method considering deployment performances[J].Aerospace Science and Technology,2015,46:124‒136. doi:10.1016/j.ast.2015.06.013
SeffenK A, YouZ, PellegrinoS.Folding and deployment of curved tape springs[J].International Journal of Mechanical Sciences,2000,42(10):2055‒2073. doi:10.1016/s0020-7403(99)00056-9
[36]
ChangWei, CaoDongjing, lianMinlong.Simulation and analysis of tape spring for deployed space structures[C]//Proceedings of the Young Scientists Forum 2017.Shanghai:SPIE,2018,10710:504‒509. doi:10.1117/12.2317599
FirthJ A, PankowM R.Minimal unpowered strain-energy deployment mechanism for rollable spacecraft booms:Ground test[J].Journal of Spacecraft and Rockets,2020,57(2):346‒353. doi:10.2514/1.a34565
[39]
LeeA J, FernandezJ M.Inducing bistability in Collapsible Tubular Mast booms with thin-ply composite shells[J].Composite Structures,2019,225:111166. doi:10.1016/j.compstruct.2019.111166
[40]
HakkakF, KhoddamS.On calculation of preliminary design parameters for lenticular booms[J].Proceedings of the Institution of Mechanical Engineers,Part G:Journal of Aerospace Engineering,2007,221(3):377‒384. doi:10.1243/09544100jaero138
[41]
YanZhongxi, WuMinger, XiangPing.An energy method to predict the peak moment of CFRP lenticular booms under pure bending[J].Aerospace Science and Technology,2025,158:109921. doi:10.1016/j.ast.2024.109921
[42]
HedgepethJ M.Accuracy potentials for large space antenna reflectors with passive structure[J].Journal of Spacecraft and Rockets,1982,19(3):211‒217. doi:10.2514/3.62239
[43]
WuDi, WuMinger, XiangPing,et al.Surface accuracy analysis and optimization design of rib-mesh paraboloidal antenna reflectors[J].Aerospace Science and Technology,2022,129:107817. doi:10.1016/j.ast.2022.107817