Results 31 to 40 of about 1,252,707 (292)
Multi-Objective ADRC-Based Aircraft Gust Load Control
Applied SciencesIn this paper, we propose a dual-loop Active Disturbance Rejection Control (ADRC) strategy for gust load alleviation in flexible aircraft. By decoupling the control of modal and normal accelerations and spatially allocating control surfaces, the method ...
Chengxiang Li +4 more
doaj +1 more source
Applied Bionics and Biomechanics, 2020 Beetles have excellent flight performance. Based on the four-plate mechanism theory, a novel bionic flapping aircraft with foldable beetle wings was designed.
Caidong Wang +4 more
doaj +1 more source
3D Zero Poisson’s Ratio Honeycomb Structure for Morphing Wing Applications
Biomimetics, 2022 Such as flying creatures, morphing aircraft can expand their aerodynamic flight envelopes by changing aerodynamic shapes, significantly improving the scope of application and flight efficiency. A novel 3D Zero Poisson’s Ratio (ZPR) honeycomb structure is
Xiaobo Gong +5 more
doaj +1 more source
System identification of flexible aircraft in frequency domain
, 2017 Purpose– The purpose of this paper is to identify the flexible aircraft model accurately from the frequency responses.Design/methodology/approach– The frequency domain output error method is used to estimate the aerodynamic (rigid body and elastic body ...
Mohamed, Majeed
core +1 more source
Output Feedback Fuzzy Gain Scheduling for MIMO Systems Applied to Flexible Aircraft Control
AerospacePrevious works by our group evidenced stability problems associated with flight control law design for flexible aircraft regarding gain scheduling.
Guilherme C. Barbosa +1 more
doaj +1 more source
Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents
Advanced Functional Materials, EarlyView.A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster +11 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi +8 more
wiley +1 more source
Dynamic Response and Pitch Damper Design for a Moderately Flexible, High-Aspect Ratio Aircraft [PDF]
, 2015 TCC (graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Engenharia Aeroespacial.This work presents the dynamic response of a slightly flexible hight-aspect-ratio aircraft in time domain and the design of a pitch damper controller to ...
Lebkuchen, Hermann Luis
core
Nano‐Architected Metallic Metamaterial With Enhanced Fatigue Resistance via Dislocation Starvation
Advanced Materials, EarlyView.Nanoscale Ni single crystals exhibit remarkable fatigue resistance over an order of magnitude higher than that of bulk single crystals through dislocation starvation. By translating this mechanism into geometric nano‐architecture, nano‐architected Ni single‐crystal metamaterials achieve about twice the fatigue resistance of the bulk, despite their ...
Kota Sugisaka +7 more
wiley +1 more source
Electrolyte Design for Fast‐Charging Lithium‐Based Batteries
Advanced Materials, EarlyView.A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley +1 more source