Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors

Cammarata, Alessandro; Sinatra, Rosario; Rigato, Riccardo; Maddìo, Pietro Davide

doi:10.3390/machines7020023

Cited by 7 publications

(2 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To maintain excellent reflective qualities and meet the prescribed bandwidth requirements, the reflector surface must be as close as possible to the shape of a paraboloid. Most of the methods used in the literature define the best surface of the reflector as the one passing through the nodes of the cable system of the front net or through the centroid of each triangular facet [5][6][7][8][9][10]. In this case, the RMS error depends on the distance between the nodes of the front net with respect to the desired working surface.…”

Section: Introductionmentioning

confidence: 99%

Surface error correction of a mesh deployable reflector

Maddìo

2023

Theoretical and Applied Mechanics - AIMETA 2022

View full text Add to dashboard Cite

Abstract. Large Deployable Reflector (LDR) systems are commonly used as mesh reflectors for large aperture space antennas in aerospace applications since they provide affordability while guaranteeing at the same time a high gain and a high directivity. To improve the surface accuracy several methods have been studied, most of which measure the distance between the cable-net system that forms the reflector surface and the desired paraboloid. In this paper we want to improve the reflector’s ability to convey a greater concentration of reflected rays in the direction of the feed. To deal with this issue, a numerical optimization algorithm has been proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface error correction of a mesh deployable reflector

Maddìo

2023

Theoretical and Applied Mechanics - AIMETA 2022

View full text Add to dashboard Cite

show abstract

“…The tensioning of the rope is achieved through a special locking mechanism at the crossover point of the rope, which is driven by a sleeve to expand [34]. DARPA developed the PAFR deployable arm in the 2001 ISAT project [35,36]. A motor drives three screws to drive the triangular frame of each level of the deployable arm to gradually expand it.…”

Section: Introductionmentioning

confidence: 99%

Development and Rotation Characteristics Analysis of a Large-Scale Deployable Arm

et al. 2023

View full text Add to dashboard Cite

In the spin-off acceleration stage during high-speed rotation in space, the deployable arm of the space gravity simulation device must withstand a large axial centrifugal force and a driving torque. In this paper, a large-scale high-speed rotating deployable arm is proposed, and the relevant characteristics during the rotation process are analyzed. A new driving mode of towed deployment is proposed that can lead to the rapid and efficient deployment of a large-scale deployable arm. First, an optimized configuration of a deployable arm is proposed. Second, the deployment driving process of the deployable arm under several different drag driving modes is simulated and analyzed, and a comparative analysis is performed to select a simple and reliable drag deployment driving scheme. Then, the effects of various disturbances on the posture of the deployable arm during the rotation process are explored, guiding the posture control of the deployable arm. Finally, a 10 m four-unit prototype is developed for the stiffness and rotation tests, which verify that the theoretical analysis in this paper is correct.

show abstract