Aerospace, 2023 The cold gas micro-propulsion system can provide low noise and ultra-high accuracy thrust for satellite platforms for space gravitational wave detection, high-precision earth gravity field measurement.
Xudong Wang +4 more
doaj +4 more sources
Direct Simulation Monte Carlo Simulation of the Effect of Needle Valve Structures on the Rarefied Flow of Cold Gas Thrusters [PDF]
Micromachines, 2023 The needle valve, serving as the flow control unit of the thruster system, is a crucial component of the entire thruster. Its performance directly impacts the flow state of the rarefied gas in the micro-nozzle structure of the cold gas micro-thruster ...
Songcai Lu +5 more
doaj +4 more sources
Effects of the Wall Temperature on Rarefied Gas Flows and Heat Transfer in a Micro-Nozzle [PDF]
Micromachines, 2023 When the satellite is in orbit, the thruster will experience drastic temperature changes (100–1000 K) under solar radiation, which will affect the rarefied gas flow state in the micro-nozzle structure of the cold gas micro-thruster.
Shurui Zhang +5 more
doaj +2 more sources
Time-resolved fuel injector flow characterisation based on 3D laser Doppler vibrometry [PDF]
, 2014 In order to enable investigations of the fuel flow inside unmodified injectors, we have developed a new experimental approach to measure time-resolved vibration spectra of diesel nozzles using a three dimensional laser vibrometer.
Crua, Cyril, Heikal, Morgan R.
core +3 more sources
Using a side-branched volume to tune the acoustic field in a looped-tube travelling-wave thermoacoustic engine with a RC load [PDF]
, 2017 Travelling-wave thermoacoustic engine utilises a compact acoustic network to obtain a right time-phasing between the acoustic velocity and pressure oscillations within the regenerator to force gas parcels to experience a Stirling-like thermodynamic cycle.
Al-Kayiem, Ali, Yu, Zhibin
core +1 more source
Generation of charged droplets by field ionization of liquid helium [PDF]
, 1998 Positively charged helium droplets were produced by ionization of liquid helium in an electrostatic spraying experiment, in which fluid emerging from a thin glass capillary was ionized by applying a high voltage to a needle inside the capillary. At 2.2 K,
Lo, Shui-Yin +3 more
core +1 more source
Simulation and Measurement of Transient Fluid Phenomena within Diesel Injection [PDF]
, 2019 Rail pressures of modern diesel fuel injection systems have increased significantly over recent years, greatly improving atomisation of the main fuel injection event and air utilisation of the combustion process.
Crua, C. +8 more
core +2 more sources
Guidelines for etching silicon MEMS structures using fluorine high-density plasmas at cryogenic temperatures [PDF]
, 2002 This paper presents guidelines for the deep reactive ion etching (DRIE) of silicon MEMS structures, employing SF/sub 6//O/sub 2/-based high-density plasmas at cryogenic temperatures.
Boer, Meint J. de +6 more
core +2 more sources
Multistate spin-transfer-torque random access memory [PDF]
, 2016 Spin-transfer-torque random access memory (STT-RAM) is an emerging non-volatile memory technology that stores information as the relative alignment of two ferromagnets in a magnetic tunnel junction stack.
Asoudegi, Nima
core +1 more source
Carbon Dioxide + Fluoromethane and Nitrous Oxide + Fluoromethane: Solid−Liquid Equilibria Measurements [PDF]
, 2010 A recently built experimental setup was employed for the estimation of the solid-liquid equilibria (SLE) of alternative refrigerant systems.
Di Nicola, Giovanni +4 more
core +1 more source