Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Robert H. Krech"'
Publikováno v:
Journal of Propulsion and Power. 36:950-960
A pulsed electric thruster named Pulsed Electrogasdynamic (PEG) thruster was investigated. In this thruster, the propellant gas is accelerated gasdynamically to high exhaust velocities (10–15 km/s...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f50bb2ddf7eb2437ac17322b6a0d59f2
https://doi.org/10.2514/1.b37298
https://doi.org/10.2514/1.b37298
Publikováno v:
53rd AIAA/SAE/ASEE Joint Propulsion Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad3f7f4fda12c8690c5561e3745d6fa9
https://doi.org/10.2514/6.2017-4724
https://doi.org/10.2514/6.2017-4724
Publikováno v:
Journal of the IEST. 39:23-28
Our pulsed fast oxygen atom source has been used extensively over the last 9 yr to investigate the effects of ambient oxygen atoms that impact materials placed in LEO. During this period, we have irradiated over 2000 material samples with 8 km/s oxyg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c377f3a16aaca32ef9a40d8fde584b7a
https://doi.org/10.17764/jiet.2.39.2.742777748hg58j77
https://doi.org/10.17764/jiet.2.39.2.742777748hg58j77
Autor:
James A. McClanahan, Skylar Quinn, Takashi Nakamura, Russell Partch, Robert H. Krech, James M. Shoji
Publikováno v:
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
This paper discusses results of a program to develop an innovative solar thermal propulsion system for application to orbit change and mobility for small spacecraft. In this system, solar radiation is collected by the concentrator which transfers the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::534e68d531890d7d3ef0018953e6e4bf
https://doi.org/10.2514/6.2005-3923
https://doi.org/10.2514/6.2005-3923
Autor:
Robert H. Krech, George E. Caledonia
This report includes: (1) an investigation of the kinetic mechanisms for the visible shuttle glow; (2) an overview of flight and laboratory investigations of VUV to IR surface glows observed at hypersonic velocities in low earth orbit conditions; (3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3938bbd9eaee718a4f2ad85998a79ecf
https://doi.org/10.21236/ada281452
https://doi.org/10.21236/ada281452
Autor:
George E. Caledonia, Robert H. Krech
Publikováno v:
SAE Technical Paper Series.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df1c80d9ab6c58d7a0ecb7c6c63e2c22
https://doi.org/10.4271/901411
https://doi.org/10.4271/901411
Autor:
Robert H. Krech, George E. Caledonia
Publikováno v:
AIP Conference Proceedings.
A pulsed high flux source of nearly monoenergetic atomic oxygen has been developed at Physical Sciences Inc. (PSI) to perform accelerated erosion testing of spacecraft materials in a simulated low earth orbit (LEO) environment. Molecular oxygen is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f660d59e14b457957206cd88275ccd37
https://doi.org/10.1063/1.39428
https://doi.org/10.1063/1.39428
Publikováno v:
AIAA Journal. 25:59-63
A novel technique for generation of a high flux of energetic (nominal ~5 eV) oxygen atoms has been demonstrated in the laboratory. The generation technique involves a laser-induced breakdown of molecular oxygen followed by a rapid expansion of the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c70fb1896cad27b22235232bd3fbe425
https://doi.org/10.2514/3.9580
https://doi.org/10.2514/3.9580
Autor:
Robert H. Krech, Evan R. Pugh
Publikováno v:
AIAA Journal. 20:863-864
Attention is called to recent measurements of the absorptivity of water vapor to 10.6-micron laser radiation made using shock-heated H2O/H2 and H2O/Ar mixtures and a probe CO2 laser. It is noted that these measurements give values about a factor of 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::406572a47584583cb2e6523aa0e8057f
https://doi.org/10.2514/3.7951
https://doi.org/10.2514/3.7951
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