Results 121 to 130 of about 379,882 (307)
Compressible unsteady potential aerodynamic flow around lifting bodies having arbitrary shapes and motions [PDF]
The program SUSSA ACTS, steady and unsteady subsonic and supersonic aerodynamics for aerospace complex transportation system, is presented. Fully unsteady aerodynamics is discussed first, followed by developments on normal wash, pressure distribution ...
Morino, L.
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Advanced Materials, EarlyView.This study utilizes the van der Waals stacking of ferroelectric α$\alpha$‐In2Se3 to fabricate in‐plane artificial charged domain walls. These charged domain walls are electrically accessible, gate‐tunable, and show 2–9 orders of magnitude higher conductance than charged domain walls from thin film ferroelectrics, allowing their integration in field ...
Shahriar Muhammad Nahid +6 more
wiley +1 more source
Economic control of next generation aerospace fleets
Data-Centric EngineeringEngineering machines are becoming increasingly complex and possess more control variables, increasing the complexity and versatility of the control systems.
Felipe Montana +8 more
doaj +1 more source
Chemical research projects office functions accomplishments programs [PDF]
Basic and applied research in the fields of polymer chemistry, polymeric composites, chemical engineering, and biophysical chemistry is summarized.
Heimbuch, A. H., Parker, J. A.
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Labor Support Survey Summary Report [PDF]
, 1996 One of the main cost drivers in the defense aerospace industry is overhead personnel. Traditionally, labor support ratios have been used as an efficiency measure and to control overhead levels.
Klein, Janice
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Advanced Materials Interfaces, EarlyView.PEDOT:PSS‐coated 3DP microstructures are introduced to realize TENGs with enhanced mechanical compliance and high electrical performance. Among the investigated geometries, arch‐shaped microstructures exhibit superior fatigue resistance due to their spring‐like behavior, enabling efficient stress distribution, stable contact evolution, and sustained ...
Mariam E. Alhosani +9 more
wiley +1 more source
Output Regulation for Systems on Matrix Lie-group
, 2016 This paper deals with the problem of output regulation for systems defined on matrix Lie-Groups. Reference trajectories to be tracked are supposed to be generated by an exosystem, defined on the same Lie-Group of the controlled system, and only partial ...
de Marco, Simone +3 more
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Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications
Advanced Materials Technologies, EarlyView.A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley +1 more source
On the danger of redundancies in some aerospace mechanisms [PDF]
An attempt is made to show that redundancies in some aerospace mechanisms do not generally improve the odds for success. Some of these redundancies may even be the very cause for failure of the system. To illustrate this fallacy, two designs based on the
Chew, M.
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Pattern Formation in Non‐Equilibrium Architected Materials
Advanced Materials Technologies, EarlyView.This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley +1 more source