Results 151 to 160 of about 605,830 (356)
Advanced Science, EarlyView.Tracking physical impacts is important in many fields. Self‐assembled microparticles made from polydiacetylene and silk fibroin that change color from blue to red when hit can provide an alternative approach to traditional mechanical transducers, quantitatively visualizing impact with responses ranging from <100 to 770 N.
Marco Lo Presti +4 more
wiley +1 more source
Redesigned rotor for a highly loaded, 1800 ft/sec tip speed compressor fan stage 1: Aerodynamic and mechanical design [PDF]
A highly loaded, high tip-speed fan rotor was designed with multiple-circular-arc airfoil sections as a replacement for a marginally successful rotor which had precompression airfoil sections. The substitution of airfoil sections was the only aerodynamic
Halle, J. E., Ruschak, J. T.
core +1 more source
An unsteady vortex lattice method model of a horizontal axis wind turbine operating in an upstream rotor wake [PDF]
, 2014 David G. Hankin, J. M. R. Graham
openalex +1 more source
Advanced Science, EarlyView.An ionic liquid‐based shear‐thickening fluid (ILSTF) exhibits lubricated dynamics from strong shear thickening to impact‐triggered jamming. A persistent nanometric solvation layer around silica governs both the shear thickening saturation in rheology and jamming front propagation under dynamic impact compression.
Yiran Wu +6 more
wiley +1 more source
Performance of a tandem-rotor/tandem-stator conical-flow compressor designed for a pressure ratio of 3 [PDF]
A conical-flow compressor stage with a large radius change through the rotor was tested at three values of rotor tip clearance. The stage had a tandem rotor and a tandem stator. Peak efficiency at design speed was 0.774 at a pressure ratio of 2.613.
Owen, A. K. +2 more
core +1 more source
Advanced Science, EarlyView.Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma +4 more
wiley +1 more source
Pre-design study for a modern four-bladed rotor for the Rotor System Research Aircraft (RSRA) [PDF]
Various candidate rotor systems were compared in an effort to select a modern four-bladed rotor for the RSRA. The YAH-64 rotor system was chosen as the candidate rotor system for further development for the RSRA.
Hughes, C. W., Logan, A. H.
core +1 more source
Comment on “Hindered rotor density-of-states interpolation function” [J. Chem. Phys. 106, 6675 (1997)] and “The hindered rotor density-of-states” [J. Chem. Phys. 108, 1748 (1998)] [PDF]
, 1999 Vadim D. Knyazev
openalex +1 more source
Advanced Science, EarlyView.Chromosome segregation in Streptococcus pneumoniae depends on RocS, a bitopic protein whose membrane‐anchoring mechanisms were unclear. Using NMR and AFM, this study reveals that the widely conserved RocS anchor binds to membranes via a conserved kink‐helix motif which inserts into lipid nanodomains.
Ana Álvarez‐Mena +11 more
wiley +1 more source
Failure Analysis on Tail Rotor Teeter Pivot Bolt on a Helicopter [PDF]
, 2018 Qiang Wang, Dong Zi-long
openalex +1 more source