Results 51 to 60 of about 369 (209)

Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data

The Astronomical Journal
Lunar tidal Love numbers ( ${k}_{2}$ , ${h}_{2}$ , and ${l}_{2}$ ), critical for understanding lunar interior structures, are traditionally derived from methods such as lunar spacecraft radiometric tracking, Lunar Laser Ranging (LLR), and laser altimetry.
Chongyang Wang, Jianguo Yan, Shangbiao Sun, Denggao Qiu, Jean-Pierre Barriot   +4 more
doaj   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Bi-directional reflectance, polarization, and spectroscopic measurements of the Chang'e-5 regolith sample

Astronomy & Astrophysics
Context. Optical measurement is a powerful tool for retrieving the regolith physical properties of the lunar surface. Aims. It has been a long-standing question in planetary remote sensing whether laboratory measurements are consistent with remote ...
Jiang Te, Zhang Hao, Ma Pei, Zhuang Yan, Hu Xiaoyi, Zhu Meng-Hua, Shkuratov Yuriy G., Lucey Paul G., Li Chunlai, Zhou Qin, Zuo Wei, Britt Daniel   +11 more
doaj   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

A Horizon Tracking Algorithm for Chang’E-4 Lunar Surface Penetrating Radar Based on Dynamic Search Center

Leida xuebao
The Moon’s shallow subsurface structure provides crucial insights into its geological evolution, material composition, and space weathering processes. With the acquisition of extensive radar datasets from recent lunar exploration programs, such as the ...
Yuxiao ZHI, Xiaohang QIU, Jiangwan XU, SHARMA Ravi, Zihang LIANG, Wentao CHEN, Changzhi JIANG, Chunyu DING   +7 more
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

High frequency Lunar Penetrating Radar quality control, editing and processing of Chang’E-4 lunar mission

Scientific Data
Chinese lunar landing mission Chang’E-4 reached the far side of the Moon in January 2019 and has been providing unprecedented Lunar Penetrating Radar data able to explore the lunar subsurface down to more than 40 m (with its more resolutive high ...
G. Roncoroni, E. Forte, I. Santin, A. Černok, A. Rajšić, A. Frigeri, M. Pipan   +6 more
doaj   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

Efficient and Robust Standing Postures of Quadruped Robots

Advanced Robotics Research, EarlyView.
A calibrated static framework estimates load, optimizes torques, and adapts posture so quadruped robots stand efficiently and robustly under external payloads, achieving up to 50% lower torque demand. Inspired by the natural posture adjustments of animals under external loading, this article presents an optimization‐based framework for minimizing joint
Mohamad Kanaan, Hamza Jomaa, Jack Challita, Kawthar Zaidan, Riad Saab, Hussein Hussein   +5 more
wiley   +1 more source

Lunar rock investigation and tri-aspect characterization of lunar farside regolith by a digital twin

Nature Communications
Yutu-2 rover conducted an exciting expedition on the 41st lunar day to investigate a fin-shaped rock at Longji site (45.44°S, 177.56°E) by extending its locomotion margin on perilous peaks.
Liang Ding, Ruyi Zhou, Tianyi Yu, Huaiguang Yang, Ximing He, Haibo Gao, Juntao Wang, Ye Yuan, Jia Wang, Zhengyin Wang, Huanan Qi, Jian Li, Wenhao Feng, Xin Li, Chuankai Liu, Shaojin Han, Xiaojia Zeng, Yu-Yan Sara Zhao, Guangjun Liu, Wenhui Wan, Yuedong Zhang, Saijin Wang, Lichun Li, Zongquan Deng, Jianzhong Liu, Guolin Hu, Rui Zhao, Kuan Zhang   +27 more
doaj   +1 more source