Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Stewart W. Johnson"'
Autor:
Stewart W. Johnson, Koon Meng Chua
Publikováno v:
Journal of Aerospace Engineering. 11:138-147
Robotic missions to Mars are listed and significant results of each past mission related to soil engineering are noted. What is known of the Mars environment and surface features that may be of interest to the engineer is summarized. The presumptive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::960b267b582687582c652e45f0dab6fa
https://doi.org/10.1061/(asce)0893-1321(1998)11:4(138)
https://doi.org/10.1061/(asce)0893-1321(1998)11:4(138)
Autor:
John J. Bertin, Stewart W. Johnson
Publikováno v:
Journal of Aerospace Engineering. 10:53-59
Many of the launch systems that are used by the United States to send payloads to orbit trace their heritage to military systems of the 1950s and 1960s. Even with launch systems built on more recent technology, the cost of placing a payload in orbit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfca9fcc135bd5c742e696862207d10c
https://doi.org/10.1061/(asce)0893-1321(1997)10:2(53)
https://doi.org/10.1061/(asce)0893-1321(1997)10:2(53)
Autor:
John P. Wetzel, Stewart W. Johnson
Publikováno v:
Advances in Space Research. 14:253-257
Planning is underway to return to the Moon and explore Mars. Scientific outposts on the Moon will conduct a variety of exploration and experimentation, including astronomical observations. For lunar-based astronomy, we propose a progression in capabi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af02d5c3b12b66e57e4e4c02d31f9400
https://doi.org/10.1016/0273-1177(94)90035-3
https://doi.org/10.1016/0273-1177(94)90035-3
Publikováno v:
Applied Mechanics Reviews. 46:336-357
Lunar-based astronomy requires structures that provide the required stiffness, strength, and dimensional stability in the challenging lunar vacuum, thermal, radiation, micrometeorite, secondary ejecta, and dust environments. Materials used in the str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39bdd162f8dc92181d1a3fdf31b0073a
https://doi.org/10.1115/1.3120362
https://doi.org/10.1115/1.3120362
Autor:
Koon Meng Chua, Stewart W. Johnson
Publikováno v:
Applied Mechanics Reviews. 46:285-300
Knowledge of the lunar regolith is essential to success in lunar missions whether crewed or robotic. The regolith is the loose material overlying more intact strata on the Moon. It varies in thickness from several meters on the maria or lunar seas to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1a94460c32495af429e0f9fe1890b80
https://doi.org/10.1115/1.3120358
https://doi.org/10.1115/1.3120358
Publikováno v:
Journal of Aerospace Engineering. 5:323-336
Some of the key issues in the planning and construction of an early lunar astronomical observatory are identified and discussed. Recommendations are given for meeting the challenges of resolving these issues in order to make observations on the moon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::763c2cc7c9086a6fe108dcef1ff6184c
https://doi.org/10.1061/(asce)0893-1321(1992)5:3(323)
https://doi.org/10.1061/(asce)0893-1321(1992)5:3(323)
Publikováno v:
Journal of Aerospace Engineering. 5:12-23
Some astronomers are considering the moon as an attractive location within the inner solar system for a variety of astronomical observatories, some of which could be operational early in the 21st century. This paper describes the computer‐aided str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::904ab9a8bb4a49be0ab02ee516c85cb7
https://doi.org/10.1061/(asce)0893-1321(1992)5:1(12)
https://doi.org/10.1061/(asce)0893-1321(1992)5:1(12)
Autor:
Walter H. Gerstle, Jack O. Burns, Koon Meng Chua, Stewart W. Johnson, Nebojsa Duric, G. Jeffrey Taylor
Publikováno v:
Journal of Aerospace Engineering. 3:211-222
The best location in the inner solar system for the grand observatories of the 21st century may be the moon. A multidisciplinary team including university students and faculty in engineering, astronomy, physics, and geology, and engineers from indust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39e17e082eecfbcb5e65041a288a4e33
https://doi.org/10.1061/(asce)0893-1321(1990)3:4(211)
https://doi.org/10.1061/(asce)0893-1321(1990)3:4(211)
Publikováno v:
Journal of Aerospace Engineering. 3:205-210
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::135bdfe4f7950b05ae68a192b09d0c9a
https://doi.org/10.1061/(asce)0893-1321(1990)3:4(205)
https://doi.org/10.1061/(asce)0893-1321(1990)3:4(205)
Autor:
Stewart W. Johnson, John P. Wetzel
Publikováno v:
Journal of Aerospace Engineering. 3:91-107
This paper highlights technology development for space exploration. It draws on the proceedings of Space 88, Engineering, Construction, and Operations in Space, which includes 125 papers providing in-depth discussions of space policy, extraterrestria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc7b26d432253d9bedfba91e8ec3bb43
https://doi.org/10.1061/(asce)0893-1321(1990)3:2(91)
https://doi.org/10.1061/(asce)0893-1321(1990)3:2(91)