China Academy of Space Technology

Experimental study on operating characteristics of titanium-water heat pipe in wide temperature range below 200 C

Heat pipes, with their excellent heat transfer performance and absence of moving parts, are widely applied in the aerospace field for thermal management. The waste heat dissipation system of space high-temperature power operates within the temperature range of 100∼300 °C, which c...

Jamming-free multi-robot assembly system for sequential locating pin insertion in non-coaxial dual-hole

Accurate alignment of large-scale components in manufacturing systems is often achieved by inserting locating pins into mating faces. In such operations, each locating pin must sequentially pass through two non-coaxial holes with a clearance of less than 50 μm, a requirement that...

A phenomenological stress decomposition framework for electro–mechanical state awareness in all-solid-state batteries

All-solid-state batteries (ASSBs) exhibit strong electro–mechanical coupling behavior due to stress-dependent solid–solid interfacial contact, making accurate state estimation challenging. To address this issue, an electro–mechanical coupling modeling and joint state estimation f...

A large-scale GPU-accelerated DEM–ray-tracing method for particle-resolved thermo-optical-mechanical simulation of selective laser sintering of polymer powders

Selective laser sintering (SLS) involves strongly coupled laser transport, particle-scale heat transfer, particle motion, and sintering, making high-fidelity simulation of realistic powder beds computationally demanding. This work presents a large-scale GPU-accelerated DEM–ray-tr...

Rapid prediction of full-field stress evolution during drilling of carbon fiber reinforced polymer: A finite element database-driven graph recurrent surrogate model

Stress evolution during carbon fiber reinforced polymer (CFRP) drilling governs drilling-induced damage and strongly affects hole quality and the structural reliability of aerospace components. Rapid and accurate prediction of stress-field evolution is essential for online proces...

In-Band RCS Reduction of Circularly Polarized Antenna Array with High Aperture Efficiency and Low Profile for Satellite and Navigation Systems

This paper proposes a circularly polarized (CP) antenna array featuring high aperture efficiency, a low in-band radar cross section (RCS), and a low profile. First, two different patch antenna elements are designed, which exhibit desirable CP performance and a 180° reflection pha...

Physics-Informed Structural Attention Unlocks Efficient and Interpretable Inverse-Designed Photonic Devices

Abstract Photonic inverse design has attracted widespread attention due to its advantages in realizing high-performance and compact optical devices. Analog metamaterials offer design flexibility through freeform geometries, but their fabrication requires additional enforcement of...

Gas transport modeling and disturbance-suppression strategy during vacuum depressurization of lunar regolith simulant

Ground-based vacuum tests of lunar-regolith-related systems require granular simulant beds to be depressurized without disturbing the sample or contaminating the vacuum chamber. Delayed pore-gas release may generate transient internal–external pressure differences and induce part...

Synergistic Interfacial Anchoring and Defect Regulation via SAMs for Highly Stable Flexible Electrochromic Energy Storage Devices

ABSTRACT Flexible electrochromic energy storage devices (FECESDs) are highly promising for wearable electronics, integrating tunable optoelectronic properties with efficient energy storage. However, weak interfacial chemical anchoring and resultant mechanical delamination between...

Boosting Energy Storage of AgNbO 3 ‐Based Capacitors by Constructing Low‐Atomic‐Displacement Region and M 2 ‐M 3 Two‐Phase Coexistence Strategy

ABSTRACT Dielectric capacitors with excellent energy‐storage performance are highly desirable for next‐generation advanced high/pulsed power capacitors that require miniaturization and integration. However, the low energy‐storage density arising from insufficient breakdown streng...

Model-Based Multiframe Radiometric Spatial Reconstruction for Optical Satellite Video

Satellite video provides repeated observations of the same ground scene within short acquisition intervals, but blur, detector sampling, radiometric differences, noise, and registration errors complicate joint reconstruction. This study presents mixed sparse representation-based...

FuseCLIP: Semantic-Guided Multidomain Fusion for Few-Shot Radar Active Jamming Recognition

Radar active jamming recognition is an essential component of radar anti-jamming processing and cognitive radar decision making. As jamming categories proliferate and electromagnetic environments become more complex, collecting sufficient labeled samples for every possible jammin...

A TSV-packaged SP6T RF MEMS switch with ultra-thin profile and suppressed substrate loss for DC to Ku band application

The evolution of wireless communication imposes stringent requirements on RF front-end modules, specifically demanding switches with ultra-thin profiles and wideband coverage up to Ku band. However, conventional packaged MEMS switches often result in excessive device height, crea...

Shear Mechanical Behavior of Lunar Regolith Simulant with Different Relative Densities Under Thermal–Mechanical Coupling

The mechanical behavior of lunar regolith is crucial for lunar exploration projects, particularly drilling and sampling equipment. However, the extremely limited quantity of returned lunar regolith is insufficient for systematic macroscopic mechanical testing. Lunar regolith simu...

A Boundary Virtual Load Method for Prestress-Field Prediction in Corner-Tensioned Membranes

Flexible membrane structures, such as solar sails and membrane reflectors, rely on accurate characterization of in-plane prestress for structural reliability and functional performance. This study proposes a Boundary Virtual Load Method (BVLM) for the semi-analytical prediction o...

Design, Modeling and Performance Analysis of an Actively Variable Stiffness Pneumatic Flexible Bending Joint

The contradiction between high compliance and low load-bearing capacity of flexible manipulators limits their engineering applications. Meanwhile, the theoretical modeling of the deformation and variable stiffness characteristics of flexible joints still faces considerable challe...

High-Precision Visual Absolute-Localization Method for Deep-Space Probes Based on Salient Landmarks

To address the scarcity of high-precision control points on planetary surfaces and the accumulated drift of conventional relative-localization methods in deep-space exploration missions, this paper proposes a visual absolute-localization method based on salient-landmark contour m...