Zobrazeno 1 - 7
of 7
pro vyhledávání: '"J. R. Brophy"'
Publikováno v:
34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit.
The magnitudes and rates of offsets and changes in the thrust vector of an engineering model NSTAR thruster (EMT2) used in an 8000 hour wear test and the flight thruster (FTl) for the DS-1 spacecraft were characterized with an innovative thrust vecto
Publikováno v:
30th Joint Propulsion Conference and Exhibit.
Publikováno v:
21st International Electric Propulsion Conference.
This paper describes an optical technique developed for measuring small differential grid displacements due to thermal expansion of an ion thruster accelerator system. The technique is based on confocal scanning optical microscope type II. For the me
Publikováno v:
International Electric Propulsion Conference.
An investigation is performed to examine the feasibility of improving arcjet performance through the use of contoured nozzle designs. The results of preliminary experiments performed on two different nozzle configurations, a 19 degree half-angle cone
The objective of this effort was to evaluate the lifetime and performance of a 30-kWe constricted arc ammonia arcjet. This engine was based on a design developed by Avco Corporation in 1963 that delivered 978 seconds of specific impulse with ammonia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bd643e8bd927ea89fa2425b4156aa61
https://doi.org/10.21236/ada190962
https://doi.org/10.21236/ada190962
Autor:
D. Q. King, J. R. Brophy
Publikováno v:
22nd Joint Propulsion Conference.
Steady-state testing of advanced, multimegawatt MPD engines requires vacuum facilities with pumping speeds which are not presently available. Gas dynamic diffusers have been proposed as a possible solution to this problem. An analytical investigation
Publikováno v:
International Electric Propulsion Conference.
A facility to develop and test thermal arcjet engines over extended periods of time has been constructed and is described in this paper. It consists of a large vacuum tank, high capacity vacuum pumps, a 100 kW power supply and a large ammonia propell