Particle-in-cell simulation of an optimized high-efficiency multistage plasma thruster
Sign Up to like & getrecommendations! Published in 2019 at "Contributions to Plasma Physics"
DOI: 10.1002/ctpp.201900028
Abstract: Funding information Australian Government Research Training Program; Deutsches Zentrum für Luftund Raumfahrt, 50RS1510 Abstract Electric propulsion attracts increasing attention in contemporary space missions as an interesting alternative to chemical propulsion because of the high efficiency… read more here.
Keywords: multistage plasma; high efficiency; efficiency multistage; thruster ... See more keywords
Health stages diagnostics of underwater thruster using sound features with imbalanced dataset
Sign Up to like & getrecommendations! Published in 2018 at "Neural Computing and Applications"
DOI: 10.1007/s00521-018-3407-3
Abstract: The underwater thruster is considered one of the most critical components located on an unmanned underwater vehicle to maneuver in the water. However, it is recognized as a common source of the fault. This phenomenon… read more here.
Keywords: imbalanced dataset; stages diagnostics; health stages; thruster ... See more keywords
Thrust noise cause analysis and suppression of a cusped field thruster
Sign Up to like & getrecommendations! Published in 2021 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.11.023
Abstract: Abstract The drag-free control technology is a critical technology to guarantee the ultra-low disturbance satellite platform. Thrust noise is the primary disturbance of the drag-free control system because the thruster acts as the actuator of… read more here.
Keywords: frequency; control; thrust noise; thruster ... See more keywords
Electrohydrodynamic thruster for near-space applications
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.12.002
Abstract: Abstract Studies of the lifting force of an electrohydrodynamic thruster based on a corona discharge in wire-to-cylinder geometry in a rarefied atmosphere have been carried out. Electrohydrodynamic cell parameters at three interelectrode gaps of 50,… read more here.
Keywords: space applications; near space; thruster near; thruster ... See more keywords
Robust spacecraft rendezvous using a variable speed control moment gyro and thruster
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2021.106644
Abstract: Abstract Robust, co-ordinate free, thrust-vector tracking controls are designed for a single Variable Speed Control Moment Gyro (VSCMG). The proposed controls, based on an adaptive active disturbance rejection control and higher-order sliding mode control are… read more here.
Keywords: variable speed; thruster; control; control moment ... See more keywords
Electric thruster mode-pruning strategies for trajectory-propulsion co-optimization
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2021.106828
Abstract: Abstract Application of idealized constant-specific-impulse, constant-thrust electric thruster performance models or curve-fitted polynomials is quite common for spacecraft trajectory design. However, incorporation of realistic performance models of multi-mode electric thrusters leads to notable challenges, and… read more here.
Keywords: optimization; thruster mode; electric thruster; thruster ... See more keywords
Numerical simulation of thruster-thruster interaction for ROV with vector layout propulsion system
Sign Up to like & getrecommendations! Published in 2020 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2020.107542
Abstract: abstract The thruster-thruster interaction in the vector layout propulsion system of a remotely operated vehicle (ROV) should be considered. The influence of the deflection angle, rotation speed, and thrusters (ducted propellers) spacing on the ROV… read more here.
Keywords: thruster interaction; rov; thruster; thruster thruster ... See more keywords
Sliding mode based fault tolerant control for autonomous underwater vehicle
Sign Up to like & getrecommendations! Published in 2020 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2020.107855
Abstract: Abstract An investigation is conducted into thruster fault tolerant control for autonomous underwater vehicle (AUV) in this paper. In order to reduce the steady error caused by thruster faults in the use of a traditional… read more here.
Keywords: fault; sliding mode; fault tolerant; tolerant control ... See more keywords
Fault feature extraction method based on optimized sparse decomposition algorithm for AUV with weak thruster fault
Sign Up to like & getrecommendations! Published in 2021 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2021.109013
Abstract: Abstract This paper investigates fault feature extraction for autonomous underwater vehicles (AUVs) with weak thruster fault. When the conventional feature extraction method based on time-frequency domain decomposition is used to extract the weak fault feature… read more here.
Keywords: decomposition; thruster; feature; extraction ... See more keywords
Effect of magnetic field configuration on discharge characteristic of a Hall effect thruster with a variable channel
Sign Up to like & getrecommendations! Published in 2019 at "Vacuum"
DOI: 10.1016/j.vacuum.2019.01.036
Abstract: Abstract HET72-VC is a kW-class Hall effect thruster with a variable channel characterized by high thrust and power densities. In this work, an experimental study of the effect of magnetic field configuration on the discharge… read more here.
Keywords: thruster; magnetic field; discharge; field configuration ... See more keywords
Ion angular distribution simulation of the Highly Efficient Multistage Plasma Thruster
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377817000125
Abstract: Ion angular current and energy distributions are important parameters for ion thrusters, which are typically measured at a few tens of centimetres to a few metres distance from the thruster exit. However, fully kinetic particle-in-cell… read more here.
Keywords: plasma; ion angular; thruster; ion ... See more keywords