Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Kristi de Grys"'
Publikováno v:
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Between 2007 and 2009, Aerojet and Lockheed Martin Space Systems Company (LMSSC) successfully extended the demonstrated operating duration of the qualification model BPT-4000 4.5 kW Hall thruster beyond 10,400 hrs. A total of 452 kg of xenon were con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc37c595a7ac2a29b9953c6e86fa5d0e
https://doi.org/10.2514/6.2010-6698
https://doi.org/10.2514/6.2010-6698
Autor:
Richard R. Hofer, Dan M. Goebel, Ioannis G. Mikellides, Ira Katz, Alex Mathers, Kristi de Grys
Publikováno v:
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
In a Qualification Life Test (QLT) of the BPT-4000 Hall thruster that recently accumulated >10,000 h it was found that the erosion of the acceleration channel practically stopped after ~5,600 h. Numerical simulations of this thruster using a 2-D axis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84703379d3470e2c2ea1e6e03f6d638b
https://doi.org/10.2514/6.2010-6942
https://doi.org/10.2514/6.2010-6942
Publikováno v:
42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
The readiness of commercial Hall thruster technology is evaluated for near-term use on competitively-award, cost-capped science missions like the NASA Discovery program. Scientists on these programs continue to place higher demands on mission perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75220fc4dfd3b92326093b06c5195aac
https://doi.org/10.2514/6.2006-4469
https://doi.org/10.2514/6.2006-4469
Autor:
Kristi de Grys, David H. Manzella, Christian Carpenter, Thomas Randolph, Ben Welander, Richard R. Hofer
Publikováno v:
42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Following completion of the 5,600 hr qualification life test of the BPT-4000 4.5 kW Hall Thruster Propulsion System, NASA and Aerojet have undertaken efforts to extend the qualified operating range and lifetime of the thruster to support a wider rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe3d00599c6b257507829c779c046a2c
https://doi.org/10.2514/6.2006-5263
https://doi.org/10.2514/6.2006-5263
Autor:
Vadim Khayms, Benjamin Welander, Jonathan Paisley, Scott Wenzel, Bob Kay, Kristi de Grys, John L. DiMicco
Publikováno v:
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70c01ff23764e63a3f823b859165076a
https://doi.org/10.2514/6.2005-3682
https://doi.org/10.2514/6.2005-3682
Publikováno v:
39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e445e29dadae8919909353623f4505d7
https://doi.org/10.2514/6.2003-4552
https://doi.org/10.2514/6.2003-4552
On-going General Dynamics (GD) and Air Force Research Laboratory (AFRL) research is presented, attempting to better understand the causes of the observed Beginning of Life (BOL) performance degradation of the BPT-4000 Hall thruster. Although current
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57669a2053d4f063b64b560622b087be
https://doi.org/10.21236/ada406245
https://doi.org/10.21236/ada406245
Publikováno v:
35th Joint Propulsion Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eb8441abb2c9e4bfaeec5a4ee87d1a1
https://doi.org/10.2514/6.1999-2283
https://doi.org/10.2514/6.1999-2283
Autor:
Kristi de Grys, Richard R. Hofer, Ira Katz, Dan M. Goebel, Alex Mathers, Ioannis G. Mikellides
Publikováno v:
Physics of Plasmas. 18:033501
In a qualification life test of a Hall thruster it was found that the erosion of the acceleration channel practically stopped after approx 5,600 h. Numerical simulations using a two-dimensional axisymmetric plasma solver with a magnetic field-aligned
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1c8371e79ae5a15d589027a295051a3
https://doi.org/10.1063/1.3551583
https://doi.org/10.1063/1.3551583