Results 31 to 40 of about 939,430 (229)

Parameterization of Fuel-Optimal Synchronous Approach Trajectories to Tumbling Targets

Frontiers in Robotics and AI, 2018
Docking with potentially tumbling Targets is a common element of many mission architectures, including on-orbit servicing and active debris removal. This paper studies synchronized docking trajectories as a way to ensure the Chaser satellite remains on ...
David Charles Sternberg, David Miller
doaj   +1 more source

Ground Assisted Onboard Planning Autonomy with VAMOS [PDF]

, 2013
The typical ground based mission planning system for a low earth satellite mission has one major drawback: The reaction time to onboard detected events includes at least the two upcoming ground station contacts. To address this disadvantage, DLR/GSOC
Lenzen, Christoph, Wörle, Maria Theresia   +1 more
core  

Onboard Orbit Determination for Deep-Space CubeSats [PDF]

, 2022
In this work, an orbit determination algorithm suitable for CubeSats onboard implementation is developed, which simulates optical autonomous navigation accomplished by a stand-alone platform. An extended Kalman filter featuring line-of-sight acquisitions
Andreis, Eleonora, Franzese, Vittorio, Topputo, Francesco   +2 more
core   +1 more source

Functional Fibers in Soft Robotics: Advances in Material, Structural, and Systemic Tactics

Advanced Robotics Research, EarlyView.
Fiber‐form robotic systems offer a scalable pathway toward embodied intelligence in soft robotics. This review surveys functional fibers as material, structural, and systemic elements, highlighting advances in responsive materials, architectural programing, and fabrication strategies.
Joonhee Won, Jaehyun Jang, Hyeonseo Kim, Inyoung Choi, Steve Park, Seongjun Park   +5 more
wiley   +1 more source

Electrochromic orbit control for smart-dust devices [PDF]

, 2012
Recent advances in MEMS (micro electromechanical systems) technology are leading to spacecraft which are the shape and size of computer chips, so-called SpaceChips, or ‘smart dust devices’.
Colombo, Camilla, McInnes, Colin, Lucking, Charlotte, McInnes, Colin R.   +3 more
core   +2 more sources

Analytical Modeling of LEO Satellite Mutual Visibility under Perturbations

Communications in Science and Technology
This present study develops an analytical model for mutual visibility in perturbed Low Earth Orbit (LEO), explicitly accounting for Earth’s oblateness (J2 and J3) and atmospheric drag.
Mohamed R Amin
doaj   +1 more source

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping

Advanced Science, EarlyView.
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Alec Boron, Bokun Zheng, Ziyang Zhou, Noel Naughton, Suyi Li   +4 more
wiley   +1 more source

Adaptive clock modeling for real-time GPS/Galileo PPP timing of LEO satellites

Frontiers in Astronomy and Space Sciences
Low Earth Orbit (LEO) satellite-borne Global Navigation Satellite System (GNSS) observations play an important role in precise orbit determination and timing applications.
Shiyu Yu, Shiyu Yu, Guanqi Liu, Guanqi Liu, Tianpei Liu, Tianpei Liu, Xinyun Cao, Xinyun Cao, Guangjie Luo, Qiwei Chen, Fei Shen, Fei Shen, Dong Zhang, Dong Zhang   +13 more
doaj   +1 more source

Hardware-in-the-loop Multi-satellite Simulator for Proximity Operations [PDF]

, 2010
This paper addresses the first steps realized to set up a hardware in-the-loop (HWIL) multi-satellite simulator aimed at the support of closed-loop real-time real-scale On-Orbit Servicing (OOS) scenarios.
Ardeans Jean-Sébastien, Ardeans, Jean-Sébastien, Boge Toralf, Boge, Toralf, Gaias Gabriella, Gaias, Gabriella, D'Amico, Simone, D'Amico Simone   +7 more
core  

Geometry‐Encoded Actuation as a Structural Interaction Layer in Origami Robots

Advanced Science, EarlyView.
We present geometry‐encoded actuation (GEA), a design framework that integrates multistable origami with liquid crystal elastomer actuators to encode environmental interactions into autonomous structural responses. GEA enables programmable shape transformation without continuous sensing or complex control, achieving robust adaptive manipulation and ...
Jianshu Zhou, Yitong Li, Junda Huang, Ian Zhang, Haoran Liu, Boyuan Liang, Yiyuan Zhang, Xiaohui Xiao, Qiguang He   +8 more
wiley   +1 more source