Results 101 to 110 of about 2,675 (308)
Applied SciencesThis article aims to conduct an in-depth investigation into the environmental impact of Hall thruster plumes on spacecraft surface charging. The non-uniform plasma plume generated by Hall thrusters may trigger charging and discharging effects, making the
Xin Zhang +11 more
doaj +1 more source
Journal of Aerospace Technology and Management, 2023 Vacuum chambers providing a low pressure environment similar to the vacuum environment in low earth orbit have been used for the testing of plasma thrusters.
Ugur Kokal, Nazli Turana, Murat Celik
doaj
NASA HERMeS Hall Thruster Electrical Configuration Characterization
, 2015 The NASA Hall Effect Rocket with Magnetic Shielding (HERMeS) 12.5 kW Technology Demonstration Unit-1 (TDU-1) Hall thruster has been the subject of extensive technology maturation in preparation for development into a flight ready propulsion system.
Herman, Daniel +8 more
core
Berichte zur Wissenschaftsgeschichte, EarlyView.Since late 2021, serious allegations have been made against physicist Erwin Schrödinger, ranging from pedophilia to serial sexual abuse. These accusations have significantly tarnished the Nobel Prize winner's public reputation. The ongoing debate has repeatedly raised the question of whether, and to what extent, these grave allegations are justified ...
Magdalena Gronau, Martin Gronau
wiley +1 more source
Performance Characteristics of Turkey’s First 1,5 kW Hall Thruster Electric Propulsion System
Havacılık ve Uzay Teknolojileri Dergisi, 2020 Due to significant advantages and successful applications, electric propulsion has become a key technology for both scientific and commercial space missions.
Demet Ulusen +7 more
doaj
Hall thruster sequencer using Intel-8051 microcontroller for ion thrust measurement
, 2005 Hall thrusters, such as Stationary Plasma Thruster (SPT), have been widely used on board modern satellites placed in geo-synchronows orbits for reasons such as orbit maintenance, repositioning and attitude control.
Rajanna, K, Stephen, RJ, Hemalatha, M
core
How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts
Biological Reviews, EarlyView.ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen +15 more
wiley +1 more source
Development of a Hall thruster test facility [PDF]
, 2012 2012 Fall.Includes bibliographical references.The present thesis details the development of a Hall thruster test facility for low power (
Yalin, Azer P., advisor +3 more
core
Humans are not unique: difficult birth is common in placental mammals
Biological Reviews, EarlyView.ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley +1 more source
High Power Demonstration of a 100 kW Nested Hall Thruster System
, 2019 The XR-100 team successfully completed high power system testing of a Nested Hall Thruster system made up of the X3 Nested Hall Thruster, a modular Power Processing Unit, and a 5 valve Mass Flow Controller as the culmination of work performed under a ...
Shark, Sarah +4 more
core +2 more sources