Results 51 to 60 of about 49,411 (303)

Singularities in mass-loaded MHD flow: The cometary bow shock [PDF]

, 1991
We present a one-dimensional model of the mass-loading of the solar wind by cometary ions which predicts a singularity in the mass-loaded flow at M = 2. Further, a subshock occurs when the flow speed reaches M almost-equal-to 1.15.
A. J. Coates, Coates, AJ, Khabibrakhmanov, IK, I. Kh. Khabibrakhmanov, V. L. Galinsky, Galinsky, VL   +5 more
core   +1 more source

Non‐Volatile Silicon Mach‐Zehnder Switches with 0.7 π Phase Shift Based on Graphene Heaters and Sb2Se3 Phase Change Material

Advanced Optical Materials, EarlyView.
ABSTRACT Photonic integrated circuits (PICs) can deliver unparalleled performance for future neuromorphic computing applications. Such neuromorphic PICs require a large number of tunable switches, which are typically realized with current‐controlled heaters, resulting in considerable energy consumption.
Jens Samland, Felix Hoff, Timo Veslin, Holger Lerch, Bartos Chmielak, Martin Otto, Caroline Porschatis, Bárbara Canto, Stephan Suckow, Matthias Wuttig, Max C. Lemme   +10 more
wiley   +1 more source

Research on analysis method of propulsive efficiency of prop-fan engine

Hangkong gongcheng jinzhan
It is of great significant for prop-fan engine under medium to high Mach number to evaluate the propulsive efficiency of turbofan, turboprop and prop-fan engines.
HUANG Xing, LI Wei, YANG Yufei, ZHENG Hualei   +3 more
doaj   +1 more source

Application of Prandtl’s Theory in the Design of an Experimental Chamber for Static Pressure Measurements

Sensors, 2021
Pumping in vacuum chambers is part of the field of environmental electron microscopy. These chambers are separated from each other by a small-diameter aperture that creates a critical flow in the supersonic flow regime.
Pavla Šabacká, Vilém Neděla, Jiří Maxa, Robert Bayer   +3 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

The control system design and study for continuous supersonic wind tunnel

Xibei Gongye Daxue Xuebao, 2022
As the first continuous supersonic wind tunnel in China, Mach number and total pressure are the most important flow field parameters of the wind tunnel, how to precise control and rapid and stable adjustment of total pressure and Mach number is the key ...
CHEN Dan, WANG Zhong, LU Xiang, LIN Chenlong, PEI Haitao   +4 more
doaj   +1 more source

Shock Mach Number Estimates Using Incomplete Measurements

, 2021
The Mach number is one of the most important parameters of collisionless shocks. The accuracy of its observational determination is compromised by several complications.
Dimmock, Andrew P.,, Gedalin, Michael,, Andrew P. Dimmock, Russell, Christopher T., Michael Gedalin, Gedalin, Michael, Christopher T. Russell, Russell, Christopher T.,, Dimmock, Andrew P.   +8 more
core   +1 more source

Engineering an Optogenetic pH‐Modulator in Bacteria

Advanced Science, EarlyView.
ABSTRACT Cells in many naturally occurring organisms routinely cooperate to control their extracellular pH in a dynamic and reversible manner, but this capability has been underexplored in synthetic biology. Here, we sought to engineer a microbial system that switches between two states —high and low extracellular pH— with minimal human intervention ...
Jenevieve Kuang, Olivia J. Armendarez, Wei‐Ting Chang, Matthew M. Hausladen, Shanna Bonanno, Daniel J. Wilson, Neel S. Joshi, Leila F. Deravi   +7 more
wiley   +1 more source

Bifurcating Mach Shock Reflections with Application to Detonation Structure

, 2011
Numerical simulations of Mach shock reflections have shown that the Mach stem can bifurcate as a result of the slip line jetting forward. Numerical simulations were conducted in this study which determined that these bifurcations occur when the Mach ...
Mach, Philip
core   +2 more sources

Aerodynamic Parameters Analysis of Transonic Flow Past Unswept and Swept Wings [PDF]

Engineering and Technology Journal, 2011
The transonic flow past unswept and swept wings has been studied. For this purpose the transonic potential flow equation is solved for inviscid compressible flow. The shock waves are replaced by discontinuities across which the entropy is conserved.
Raad Shehab Ahmed
doaj   +1 more source