Results 101 to 110 of about 2,244,717 (304)

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

Advanced Robotics Research, EarlyView.
Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira, Liao Wu, Ming Li, Priyank Kumar, Xiaopeng Li, Shi‐Yang Tang   +5 more
wiley   +1 more source

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

Pressure measurements on a rectangular wing with a NACA0012 airfoil during conventional flutter [PDF]

The Structural Dynamics Division at NASA LaRC has started a wind tunnel activity referred to as the Benchmark Models Program. The primary objective of the program is to acquire measured dynamic instability and corresponding pressure data that will be ...
Bennett, Robert M., Dansberry, Bryan E., Durham, Michael H., Rivera, Jose A., Jr., Silva, Walter A.   +4 more
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Liquid Metal Sensors for Soft Robots

Advanced Robotics Research, EarlyView.
This review thoroughly reviews liquid metal sensors in soft robots. Their unique material properties like high conductivity and good biocompatibility are analyzed. Working principles are classified, and applications in environmental perception, motion detection, and human—robot interaction are introduced.
Qi Zhang, Nan Li, Yujia Song, Chen Hua, Tangzhen Guan, Yibing Ma, Cai Cheng, Jing Liu   +7 more
wiley   +1 more source

The imitating flapping behaviour of mosquito using flexible wing model

Nihon Kikai Gakkai ronbunshu, 2015
The mosquito's wing is deforming during flapping stroke and the pitching angle is changed. The motion called “feathering motion” is considered that the wing is deformed passively by the aerodynamic force. But it is not established yet. In this paper,
Atsushi KASE, Yuki KATOH, Naoyuki YOSHIDA, Tsutomu TAJIKAWA, Kiyoshi BANDO   +4 more
doaj   +1 more source

The effects of aeroelastic deformation on the unaugmented stopped-rotor dynamics of an X-Wing aircraft [PDF]

A new design concept in the development of VTOL aircraft with high forward flight speed capability is that of the X-Wing, a stiff, bearingless helicopter rotor system which can be stopped in flight and the blades used as two forward-swept and two aft ...
Gilbert, Michael G., Silva, Walter A.
core   +1 more source

Passive Aeroelastic Tailored Wing Modal Test Using the Fixed Base Correction Method [PDF]

In modal testing and finite element model correlation, analysts desire modal results using free-free or rigid boundary conditions to ease comparisons of test versus analytical data.
JG Beliveau, JM Sinapius, JR Crowley, KL Napolitano, KL Napolitano, KL Napolitano, KL Napolitano, M Imregun, MS Allen, NC Yoder, RL Mayes, RL Mayes, TG Carne, U Fullekrug   +13 more
core   +2 more sources

Gust Load Alleviation with Robust Control for a Flexible Wing

, 2016
Traditional methods for gust alleviation of aircraft are mostly proposed based on a specific flight condition. In this paper, robust control laws are designed for a large flexible wing with uncertainty in Mach number and dynamic pressure.
Xiang Liu, Qin Sun
semanticscholar   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source