A new frontier in left atrial appendage closure
Sign Up to like & getrecommendations! Published in 2022 at "Catheterization and Cardiovascular Interventions"
DOI: 10.1002/ccd.30431
Abstract: Oral anticoagulation (OAC) has been the mainstay for thromboembolic prevention in atrial fibrillation, yet many patients are ineligible for or cannot tolerate its long‐term use. As a result, ~40% of patients with an indication for… read more here.
Keywords: bulb; device; atrial appendage; sail ... See more keywords
Ionic liquid-induced aggregate formation and their applications
Sign Up to like & getrecommendations! Published in 2018 at "Biophysical Reviews"
DOI: 10.1007/s12551-018-0408-5
Abstract: In the last two decades, researchers have extensively studied highly stable and ordered supramolecular assembly formation using oppositely charged surfactants. Thereafter, surface-active ionic liquids (SAILs), a special class of room temperature ionic liquids (RTILs), replace… read more here.
Keywords: ionic liquid; aggregate formation; induced aggregate; sail ... See more keywords
Analysis of Influencing Factors on Lift Coefficients of Autonomous Sailboat Double Sail Propulsion System Based on Vortex Panel Method
Sign Up to like & getrecommendations! Published in 2019 at "China Ocean Engineering"
DOI: 10.1007/s13344-019-0073-x
Abstract: Sail is the core part of autonomous sailboat and wing sail is a new type of sail. Wing sail generates not only propulsion but also lateral force and heeling moment. The latter two will affect… read more here.
Keywords: propulsion; sail; coefficient; double sail ... See more keywords
Thrust vectoring of an electric solar wind sail with a realistic sail shape
Sign Up to like & getrecommendations! Published in 2017 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2016.11.027
Abstract: Abstract The shape of a rotating electric solar wind sail under the centrifugal force and solar wind dynamic pressure is modeled to address the sail attitude maintenance and thrust vectoring. The sail rig assumes centrifugally… read more here.
Keywords: thrust vectoring; solar wind; shape; sail ... See more keywords
Fixed-axis electric sail deployment dynamics analysis using hub-mounted momentum control
Sign Up to like & getrecommendations! Published in 2018 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2017.11.048
Abstract: Abstract The deployment dynamics of a spin stabilized electric sail (E-sail) with a hub-mounted control actuator are investigated. Both radial and tangential deployment mechanisms are considered to take the electric sail from a post-launch stowed… read more here.
Keywords: deployment; configuration; control; hub ... See more keywords
Electric sail displaced orbit control with solar wind uncertainties
Sign Up to like & getrecommendations! Published in 2019 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2019.06.037
Abstract: Abstract The working principle of the Electric Solar Wind Sail, an innovative propellantless propulsion system proposed in 2004, is based on the electrostatic interaction between a spinning grid of tethers, kept at a high positive… read more here.
Keywords: wind uncertainties; solar wind; sail; control ... See more keywords
Effects of attitude constraints on solar sail optimal interplanetary trajectories
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.07.010
Abstract: Abstract The aim of this paper is to evaluate the effect of a maximum admissible value of the sail cone angle on the transfer performance of a solar sail-based spacecraft in an interplanetary mission scenario.… read more here.
Keywords: attitude constraints; solar sail; sail; effects attitude ... See more keywords
Nonlinear model predictive control for attitude maneuver of a barbell electric sail through voltage regulation
Sign Up to like & getrecommendations! Published in 2021 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.10.028
Abstract: Abstract The paper focuses on the attitude dynamics and control of a barbell electric sail (E-sail). The barbell E-sail is composed of two tip satellites connected via long conductive tethers to a central insulated confluence… read more here.
Keywords: model predictive; nonlinear model; control; sail ... See more keywords
Event-triggered coordinated control for multiple solar sail formation flying around planetary displaced orbits
Sign Up to like & getrecommendations! Published in 2021 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2021.04.011
Abstract: Abstract This paper presents a planetary elliptic displaced orbit (PEDO) for a solar sail with reflectivity control devices (RCDs). The problem of multiple solar sail formation flying in which the leader follows the PEDO is… read more here.
Keywords: sail; control; solar sail; multiple solar ... See more keywords
Effects of optical parameter measurement uncertainties and solar irradiance fluctuations on solar sailing
Sign Up to like & getrecommendations! Published in 2019 at "Advances in Space Research"
DOI: 10.1016/j.asr.2019.11.037
Abstract: Abstract The heliocentric orbital dynamics of a spacecraft propelled by a solar sail is affected by some uncertainty sources, including possible inaccuracies in the measurement of the sail film optical properties. Moreover, the solar radiation… read more here.
Keywords: parameter measurement; optical parameter; measurement uncertainties; solar sail ... See more keywords
Application of a modified generalized sail model on a solar sail with wrinkles
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Space Research"
DOI: 10.1016/j.asr.2020.01.020
Abstract: Abstract In this paper, we present an analysis of effect of wrinkles on the solar sail performance. We describe different analytical, semi-analytical and numerical approaches to the calculation of general large-scale curvature of a solar… read more here.
Keywords: generalized sail; solar sail; sail; model solar ... See more keywords