Results 141 to 150 of about 683,706 (365)
The effect of blade aerodynamic modelling on the prediction of high-frequency rotor airloads [PDF]
, 2009 Interactions between the blades and vortical structures within the wake of a helicopter rotor are a significant source of impulsive loading and noise, particularly in descending flight.
Brown, Richard, Kelly, Mary E.
core
Fluorescent Polymeric Nanofibers as Ratiometric Multiplexed Skin Sensors of pH and Oxygen
Advanced Healthcare Materials, EarlyView.Fluorescent polymeric nanofibers and nanorods are produced as ratiometric sensors of two important physiological parameters: pH and oxygen. They operate by dual Forster resonance energy transfer from large number of energy donor dyes to limited number of two distinct energy acceptors, enabling simultaneous sensing of pH and oxygen.
Rémi Pelletier +2 more
wiley +1 more source
Root damage analysis of aircraft engine blade subject to ice impact [PDF]
The blade root response due to ice impact on an engine blade is simulated using the NASA in-house code BLASIM. The ice piece is modeled as an equivalent spherical object impacting on the leading edge of the blade and has the velocity opposite to that of ...
Abumeri, G. H. +3 more
core +1 more source
Advanced Healthcare Materials, EarlyView.A transparent dual‐network strain sensor integrates robust mechanical properties, room‐temperature self‐healing, and stable performance under sub‐zero conditions and prolonged storage. Its excellent biocompatibility and antimicrobial properties enable safe skin contact.
Wenqing Chen +8 more
wiley +1 more source
Performance of an optimized rotor blade at off-design flight conditions [PDF]
An investigation is made of the dynamic and aerodynamic performance of a helicopter rotor previously optimized for minimum 4/rev vertical shear and blade weight subject to certain dynamic and structural constraints.
Chattopadhyay, Aditi
core +1 more source
Advanced Healthcare Materials, EarlyView.Intranasally administered hUMSC‐derived exosomes modulate the CRYAB–ARRDC3–Drp1 axis, alleviating mitochondrial dysfunction and ferroptosis, enhancing neuronal survival, reducing oxidative stress, and promoting functional recovery in ischemia‐reperfusion injury, offering a promising therapeutic strategy for ischemic stroke.
Rong ji +7 more
wiley +1 more source
Boron‐Doped Nano‐Crystalline Coated Carbon Fibers for Phasic Dopamine Sensing
Advanced Healthcare Materials, EarlyView.This uniform coating presents a mix of graphitic and diamond‐like carbon to create a mechanically and electrically robust alternative for the electrochemical detection of dopamine. The electrodes in this work possess the equivalent sensitivity to the state‐of‐the‐art FSCV dopamine detecting electrodes, whilst demonstrating an ability to withstand ...
Simon J. Higham +19 more
wiley +1 more source
NATURAL FREQUENCIES OF TUNED AND MISTUNED BLADED DISCS ON A SHAFT
TASK Quarterly, 2006 The dynamic behaviour of a rotor consisting of two tuned and mistuned bladed discs on a solid shaft is considered. The effect of the shaft’s flexibility on the dynamic characteristics of the bladed discs and the coupling effects between the shaft and ...
ROMUALD RZĄDKOWSKI +2 more
doaj
BOS-Based Three-Dimensional Reconstruction of Rotor Blade Tip Vortex Positions [PDF]
, 2021 Nicola Debernardis +2 more
openalex +1 more source
Dynamic analysis of a pre-and-post ice impacted blade [PDF]
The dynamic characteristics of an engine blade are evaluated under pre-and-post ice impact conditions using the NASA in-house computer code BLASIM. The ice impacts the leading edge of the blade causing severe local damage.
Abumeri, G. H. +3 more
core +1 more source