Results 101 to 110 of about 131,875 (310)
Effect Of Propellant Formulation On Propellant Properties
, 2018 This paper present the effect of propellant formulations on propellant properties is very crucial to the quality of propellant used in rocket motor. As poor propellant formulation usually leads to unstable combustion and this can lead to a total destruction of the entire structure of the solid rocket motor.
openaire +2 more sources
Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities
Advanced Materials, EarlyView.This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen +7 more
wiley +1 more source
An analysis for high speed propeller-nacelle aerodynamic performance prediction. Volume 1: Theory and application [PDF]
A computer program, the Propeller Nacelle Aerodynamic Performance Prediction Analysis (PANPER), was developed for the prediction and analysis of the performance and airflow of propeller-nacelle configurations operating over a forward speed range ...
Anderson, Olof L. +3 more
core +1 more source
The inner disk radius in the propeller phase and accretion-propeller transition of neutron stars
, 2016 We have investigated the critical conditions required for a steady propeller effect for magnetized neutron stars with optically thick, geometrically thin accretion disks.
Ertan, Unal
core +1 more source
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
Propeller Study. Part 2: the Design of Propellers for Minimum Noise [PDF]
The design of propellers which are efficient and yet produce minimum noise requires accurate determinations of both the flow over the propeller. Topics discussed in relating aerodynamic propeller design and propeller acoustics include the necessary ...
Ormsbee, A. I., Woan, C. J.
core +1 more source
, 2017 Gee-Haw Whammy Diddle is a seemingly simple mechanical toy consisting of a wooden stick and a second stick that is made up of a series of notches with a propeller at its end.
Badin, Matej +2 more
core +2 more sources
Orbital Electrowetting: From Continuous Droplet Transport to Programmable Microfluidics
Advanced Materials, EarlyView.This work comprehensively summarizes the mechanisms, recent advances, potential applications, and key challenges of orbital electrowetting. It highlights that integrating orbital electrowetting with conventional electrowetting is required to enable complete digital‐microfluidic workflows while simplifying platform architecture.
Jie Tan +7 more
wiley +1 more source
Research on a Strategy for Prediction Methods of Submarine Self-Propulsion Hydrodynamic Performance
Applied SciencesTo investigate the impact of different computational strategies on the self-propulsion hydrodynamic performance of a submarine model, a study was conducted using the RANS method, employing both the steady-state Moving Reference Frame (MRF) method and the
Pei Xu, Yingchun Guo, Yin Zhang
doaj +1 more source
Magnetically Actuated Drops‐on‐Stilts Microrobots for Transport and Delivery of Hydrophobic Cargo
Advanced Materials Interfaces, EarlyView.Iron oxide nanoparticles and oil droplets in external magnetic fields form “drops‐on‐stilts” microrobots that transport hydrophobic cargo. Tunable nanoparticle–droplet interactions generate stilt‐like structures. Field rotation enables walking, obstacle navigation, and collective motion.
Oluwafemi Ligan +9 more
wiley +1 more source