Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Robert Shishko"'
Publikováno v:
Journal of Spacecraft and Rockets. 60:49-58
The 2033 Mars launch period provides a unique opportunity for a round-trip mission with a total flight time of only 1.6 years. A concept is presented to perform a crewed Mars orbital mission in 2033 that would minimize development and mission risk by
Autor:
Jeff Coulton, Michael Hitch, Claude Sammut, Carlos A. Tapia Cortez, Serkan Saydam, Robert Shishko
Publikováno v:
Chaos, Solitons & Fractals. 111:186-197
Mineral extraction activities and the commercialisation of mineral-based products in later stages are fundamental for economic, technological and social development, so understanding their long-term market behaviour in order to forecast prices is cru
Autor:
Robert Shishko, Rene Fradet, Jeff Coulton, Andrew G. Dempster, Serkan Saydam, Carlos Tapia-Cortez, Sydney Do
Publikováno v:
Acta Astronautica. 138:53-67
This paper reports on our effort to develop an ensemble of specialized models to explore the commercial potential of mining water/ice on Mars in support of a Mars Colony. This ensemble starts with a formal systems architecting framework to describe a
Publikováno v:
Acta Astronautica. 123:51-61
This paper develops a network optimization formulation for dynamic campaign-level space mission planning. Although many past space missions have been designed mainly from a mission-level perspective, a campaign-level perspective will be important for
Publikováno v:
2018 IEEE Aerospace Conference.
Since the cancellation of the Constellation Program, NASA officially has been focused on Mars as the next step for human exploration. Yet many in the space community believe that returning humans to the moon is more logical. Often-cited reasons for t
Publikováno v:
Acta Astronautica. 105:428-443
This research develops a dynamic logistics network formulation for lifecycle optimization of mission sequences as a system-level integrated method to find an optimal combination of technologies to be used at each stage of the campaign. This formulati
Autor:
Carlos Tapia-Cortez, Jeff Coulton, Andrew G. Dempster, Robert Shishko, Sydney Do, Serkan Saydam, Rene Fradet
Publikováno v:
10th Symposium on Space Resource Utilization.
Publikováno v:
Innovations in Systems and Software Engineering. 8:213-221
Due to the highly constrained schedules and budgets that NASA missions must contend with, the identification and management of cost, schedule and risks in the earliest stages of the lifecycle is critical. At the Jet Propulsion Laboratory, it is the c
Publikováno v:
Journal of Spacecraft and Rockets. 46:1077-1088
A new method for analyzing margins in the Constellation program is described and applied to the performance and mass margins for the integrated transportation system returning humans to the lunar surface. The approach treats the Ares-V Earth-departur
Autor:
Jeff Coulton, Rene Fradet, Carlos Tapia-Cortez, Serkan Saydam, Robert Shishko, Andrew G. Dempster
Publikováno v:
AIAA SPACE 2015 Conference and Exposition.
The aim of this effort is to develop an integrated set of risk-based financial and technical models to evaluate multiple Off-Earth Mining (OEM) scenarios. This quantitative, scenario- and simulation-based tool will help identify combinations of marke