Results 31 to 40 of about 32,293 (191)

Determining the Location of the UAV When Flying in a Group

Aerospace
This paper created a flight trajectory model of five uncrewed aerial vehicles (UAVs) in the geocentric coordinate system, provided the UAVs fly in the specified formation.
Milan Džunda, Peter Dzurovčin, Sebastián Čikovský, Lucia Melníková   +3 more
doaj   +1 more source

Actuator Constrained Trajectory Generation and Control for Variable-Pitch Quadrotors [PDF]

, 2012
Control and trajectory generation algorithms for a quadrotor helicopter with variable-pitch propellers are presented. The control law is not based on near-hover assumptions, allowing for large attitude deviations from hover.
Abbeel P., Baruh H., Chowdhary G., Cutler M., Gavrilets V., How J. P., Kim J., Kuipers J. B., Michini B.   +8 more
core   +4 more sources

DDPG-Based Convex Programming Algorithm for the Midcourse Guidance Trajectory of Interceptor

Aerospace
To address the problem of low accuracy and efficiency in trajectory planning algorithms for interceptors facing multiple constraints during the midcourse guidance phase, an improved trajectory convex programming method based on the lateral distance ...
Wan-Li Li, Jiong Li, Ji-Kun Ye, Lei Shao, Chi-Jun Zhou   +4 more
doaj   +1 more source

Flexible Perovskite Solar Cells: Low Temperature Processing, Material Design, and Pathways to Scalable Green Photovoltaics

Carbon Neutralization, Volume 4, Issue 5, September 2025.
This study systematically summarizes recent advancements in flexible perovskite solar cells (FPSCs), focusing on low‐temperature fabrication strategies, functional material engineering, and device integration. By showcasing FPSCs' potential to wearable electronics and portable energy systems across healthcare and IoT applications, this study ...
Tao Ye, Zhenlong Wang, Shaoyang Ma, Zihui Liang, Binghe Ma, Yifan Wang, Xinrui Zhang, Haoyang Sun, Xingxu Zhang, Kai Tao, Congcong Wu, Dong Yang, Jinjun Deng, Jian Luo, Weizheng Yuan, Jin Qian, Tianming Li, Kai Wang   +17 more
wiley   +1 more source

Study on the Penetration Performance of a Double-Angle Linear Shaped Charge: Performance Improvement and Miniaturization

Aerospace
This study was conducted on a linear shaped charge with a double-angle liner. The double-angle liner has a large inner apex angle and a small outer liner angle.
Jongmin Park, Sejin Kwon
doaj   +1 more source

Critical Electrochemistry Technologies Applicable in Space Exploration

Advanced Science, Volume 12, Issue 32, August 28, 2025.
The available resources in space and discuss the application scenarios and challenges of electrochemical methods in four critical domains is analyzed: metallurgical processing of mineral resources, water resources utilization, carbon cycle management in extraterrestrial habitats, and electrical energy storage.
Ruisi Xu, Zepeng Lv, Shaolong Li, Jilin He, Jianxun Song   +4 more
wiley   +1 more source

Lunar Rover Collaborated Path Planning with Artificial Potential Field-Based Heuristic on Deep Reinforcement Learning

Aerospace
The International Lunar Research Station, to be established around 2030, will equip lunar rovers with robotic arms as constructors. Construction requires lunar soil and lunar rovers, for which rovers must go toward different waypoints without ...
Siyao Lu, Rui Xu, Zhaoyu Li, Bang Wang, Zhijun Zhao   +4 more
doaj   +1 more source

Aircraft systems architecting: a functional-logical domain perspective [PDF]

, 2016
Presented is a novel framework for early systems architecture design. The framework defines data structures and algorithms that enable the systems architect to operate interactively and simultaneously in both the functional and logical domains.
Cuiller, C., Giese, Tim, Guenov, Marin D., Molina-Cristobal, Arturo, Riaz, Atif, Sharma, Sanjiv, van Heerden, Albert S. J., Voloshin, V.   +7 more
core   +1 more source

Skeleton Enhanced Dispersed Lubricant Particle Based Triboelectric Nanogenerator for Droplet Energy Harvesting

Advanced Science, Volume 12, Issue 31, August 21, 2025.
A stretchable, slippery triboelectric nanogenerator (SS‐TENG) is presented for efficient droplet energy harvesting. A novel phase separation method is created to prepare a durable, flexible triboelectric layer with skeleton‐embedded, dispersed lubricant particles.
Changjun Yang, Yan Wang, Yamei Wang, Zelinlan Wang, Yurun Guo, Liwen Zhang, Xiaolin Liu, Huawei Chen   +7 more
wiley   +1 more source

A Nonlinear Beam Finite Element with Bending–Torsion Coupling Formulation for Dynamic Analysis with Geometric Nonlinearities

Aerospace
Vibration analysis of wing-box structures is a crucial aspect of the aeronautic design to avoid aeroelastic effects during normal flight operations. The deformation of a wing structure can induce nonlinear couplings, causing a different dynamic behavior ...
Cesare Patuelli, Enrico Cestino, Giacomo Frulla   +2 more
doaj   +1 more source