Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Alfred C. Mascy"'
Publikováno v:
Astrodynamics Conference.
The impressive results of the Voyager 2 flybys of Uranus (January 1986) and Neptune (August 1989) revealed many surprises and produced a new set of scientific questions regarding the formation and evolution of the planets, their atmospheres, the ring
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a375cd49dfde7db13d1b645c95b64e4
https://doi.org/10.2514/6.1990-2893
https://doi.org/10.2514/6.1990-2893
Autor:
Alfred C. Mascy, John Niehoff
Publikováno v:
International Astronomical Union Colloquium. 12:513-526
Of the many asteroids that are cataloged, selection of a target planetoid was narrowed to the Mars-crossing asteroids. The main belt and Trojan asteroids are much farther away and require longer voyage times and propulsive energy to accomplish sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37a817a65667fd90587577be3807a923
https://doi.org/10.1017/s0252921100089363
https://doi.org/10.1017/s0252921100089363
Autor:
Alfred C. Mascy
Publikováno v:
Journal of Spacecraft and Rockets. 6:1367-1370
Constant thrust electric propulsion systems performance with coast trajectories presented for 100 AU extraecliptic missions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f254dd997b1abcfbb57827d431b39502
https://doi.org/10.2514/3.29832
https://doi.org/10.2514/3.29832
Autor:
Alfred C. Mascy, John S. Mackay
Publikováno v:
Journal of Spacecraft and Rockets. 8:1143-1147
A ?velocity at the sphere of influence' method and an asymptotic matching method of patching together two-body low thrust solutions are compared to a number of three-body numerical results for outer planet orbiter missions. The two patching methods c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fff8bda6fedece6527fb69fa3a52417
https://doi.org/10.2514/3.30358
https://doi.org/10.2514/3.30358
Autor:
Alfred C. Mascy
Publikováno v:
Journal of Spacecraft and Rockets. 7:477-480
Low thrust mission simulation dependence on hardware definition, discussing power plant characteristics, jet velocity and thrustor efficiency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0077e941f5b34e031236042775ba0e43
https://doi.org/10.2514/3.29968
https://doi.org/10.2514/3.29968
Publikováno v:
27th Aerospace Sciences Meeting.
A significant need exists for a system which will provide the life science experimenter with relatively frequent and inexpensive access to the space environment. To fulfill this need, a project and spacecraft system described as the Reusable Reentry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b3db80e5ce88cbf0e1f9e91c139403c
https://doi.org/10.2514/6.1989-101
https://doi.org/10.2514/6.1989-101
Autor:
Steven W. Squyres, Alfred C. Mascy, Christopher P. McKay, Byron L. Swenson, Larry E. Edsinger
Publikováno v:
23rd Aerospace Sciences Meeting.
An engineering design study of a comet nucleus penetrator system for in situ determinations of comet composition is presented. The system is designed for participation in the Comet Rendezvous/Asteroid Flyby mission to comet Kopff in 1996. The instrum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8774278b93580c4fcc352e32a8ff5a57
https://doi.org/10.2514/6.1985-463
https://doi.org/10.2514/6.1985-463
Publikováno v:
SPIE Proceedings.
The Astrometric Telescope Facility (ATF) is an optical telescope facility of extreme astrometric precision whose principle scientific purpose is the detection and study of planetary systems about nearby stars. With the recent change in the space stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5277a14c129602d75c8561634b8a10c3
https://doi.org/10.1117/12.943604
https://doi.org/10.1117/12.943604
Publikováno v:
Astrodynamics Conference.
Mission and system concerns of the Reusable Reentry Satellite are examined. The orbital lifetime of the satellite due to atmospheric drag, the desirable orbital characteristics which will permit deorbit and landing at the designated recovery site, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d262a97a57e1b501de791e708c306be8
https://doi.org/10.2514/6.1988-4257
https://doi.org/10.2514/6.1988-4257
Publikováno v:
SAE Technical Paper Series.
A Life Sciences Research Facility on a Space Station will contribute to the health and well-being of humans in space, as well as address many fundamental questions in gravitational and developmental biology. Scientific interests include bone and musc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1971e53c049f035dfa27a6425969bd67
https://doi.org/10.4271/840930
https://doi.org/10.4271/840930