Zobrazeno 1 - 10
of 10
pro vyhledávání: '"K. D. Goodfellow"'
Publikováno v:
Journal of Propulsion and Power. 29:158-165
Time-dependent charge-coupled device camera cathode axial temperature measurements obtained from solid tungsten and thoriated-tungsten cathodes in a 30–60 A arc discharge with mass-flow rates varying from 450 to 640 standard cubic centimeters per m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce1d425ef2955284068cb0b21011d42e
https://doi.org/10.2514/1.b34621
https://doi.org/10.2514/1.b34621
Publikováno v:
IEEE Transactions on Plasma Science. 40:1926-1932
Since the early 1960s to mid-1960s, laboratory studies have demonstrated the unique ability of magnetoplasmadynamic (MPD) thrusters to impart an exceptionally high level of specific impulse and thrust at large power processing densities. These intrin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21c9bbcff6443446a99504eca0f1b0fa
https://doi.org/10.1109/tps.2012.2194488
https://doi.org/10.1109/tps.2012.2194488
Publikováno v:
IEEE Transactions on Plasma Science. 39:1075-1081
High-power magnetoplasmadynamic (MPD) thrusters are an attractive option for providing primary propulsion on flagship-class spaceflight missions beyond the Low Earth Orbit (LEO), such as piloted Mars and Mars cargo, and more near-term cargo missions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69362b333cfde6530fa28db46501345a
https://doi.org/10.1109/tps.2011.2108310
https://doi.org/10.1109/tps.2011.2108310
Publikováno v:
48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
This paper is focused on examining the potential th oriated tungsten cathodes have on reducing surface temperatures in magnetoplasmadynamic (MPD) thruster cathodes. Optical pyrometry and charge-coupled device (CCD) camera imaging have provided axial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5438844c06fc42bb78ddef7b9ea8ccc4
https://doi.org/10.2514/6.2012-4277
https://doi.org/10.2514/6.2012-4277
Publikováno v:
2000 IEEE Aerospace Conference. Proceedings (Cat. No.00TH8484).
A long-duration test of the Deep Space 1 (DS1) spare flight thruster (FT2) is presently being conducted. To date, the thruster has accumulated over 6700 hours of operation. Performance data-such as thrust, specific impulse and efficiency-over the ful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1ad044038fc25153e80e19952083dec
https://doi.org/10.1109/aero.2000.878371
https://doi.org/10.1109/aero.2000.878371
Autor:
K. D. Goodfellow, J. E. Polk
Publikováno v:
30th Joint Propulsion Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::732214d1e41ea8b54eabada002f42408
https://doi.org/10.2514/6.1994-3132
https://doi.org/10.2514/6.1994-3132
Publikováno v:
30th Joint Propulsion Conference and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f876491af49c3e0f02715f125ca33bbc
https://doi.org/10.2514/6.1994-3244
https://doi.org/10.2514/6.1994-3244
Autor:
K. D. Goodfellow, J. E. Polk
Publikováno v:
28th Joint Propulsion Conference and Exhibit.
A total of 1462 hours of operaton were demonstrated in an endurance test of a 30 kWe-class ammonia arcjet operated at 10 kWe. The propellant flow rate was 0.170 g/s, and the measured performance increased from approximately 650 s specific impulse at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d4e71cf07b09d95ff5e44358b520be8
https://doi.org/10.2514/6.1992-3833
https://doi.org/10.2514/6.1992-3833
Autor:
J. E. Polk, K. D. Goodfellow
Publikováno v:
27th Joint Propulsion Conference.
The throttling capabilities of a 30 kW class ammonia arcjet and its compatibility with a breadboard power conditioning unit (PCU) were tested in two series of tests. The first series was performed to determine the performance and operating characteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46fa6d5ac98b2737cf93030f3205efd5
https://doi.org/10.2514/6.1991-2577
https://doi.org/10.2514/6.1991-2577
Publikováno v:
25th Joint Propulsion Conference.
Endurance tests (100 hours) were conducted to examine the effects of geometry and spacing on 30 kW arcjet cathode erosion. The effects of input power source ripple were also examined. The preliminary results from a 413 hour endurance test are also di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f12b3e6ff4d18cffe36ce72ec9d1976
https://doi.org/10.2514/6.1989-2264
https://doi.org/10.2514/6.1989-2264