Gani dahiwala biography of michael jackson
Technical Feasibility Assessment of Lunar Base MissionScenarios
NASA Astrophysics Data System (ADS)
Magelssen, Trygve ``Spike''; Sadeh, Eligar
2005-02-01
Investigation of the literature pertaining to lunar base (LB) missions and the technologies required for LB development has revealed an information gap that hinders technical feasibility assessment. This information gap is the absence of technical readiness levels (TRL) (Mankins, 1995) and information pertaining to the criticality of the critical enabling technologies (CETs) that enable mission success. TRL is a means of identifying technical readiness stages of a technology. Criticality is defined as the level of influence the CET has on the missionscenario. The hypothesis of this research study is that technical feasibility is a function of technical readiness and technical readiness is a function of criticality. A newly developed research analysis method is used to identify the technical feasibility of LB missionscenarios. A Delphi is used to ascertain technical readiness levels and CET criticality-to-mission. The research analysis method is applied to the Delphi results to determine the technical feasibility of the LB missionscenarios that include: observatory, science research, lunar settlement, space exploration gateway, space resource utilization, and space tourism. The CETs identified encompasses four major system level technologies of: transportation, life support, structures, and power systems. Results of the technical feasibility assessment show the observatory and science research LB missionscenarios to be more technical ready out of all the scenarios, but all missionscenarios are in very close proximity to each other in regard to criticality and TRL and no one missionscenario stands out as being absolutely more technically ready than any of the other scenarios. What is significant and of value are the Delphi results concerning CET criticality-to-mission and the TRL values evidenced in the Table
International Encyclopedia of Pseudonyms: Band 12 F – J. Sz-y 9783110946390, 9783598249723
Table of contents :
Contents / Inhalt / Contenu / Contenuto / Contenido
Notes for the user
Notes for the use of Part II: Pseudonyms, Volumes 10 to 16
Hinweise für den Benutzer
Benutzungshinweise zu Teil II: Pseudonyme, Bände 10 bis 16
Notes pour l’utilisateur
Note aux utilisateurs de la partie II: Pseudonymes, volumes 10 à 16
Avvertenze
Avvertenze all’uso della Parte II: Pseudonimi, Tomi 10–16
Indicaciones para el uso
Indicaciones para el uso – Segunda Parte: Pseudónimos, tomos 10 hasta 16
List of Sources / Quellenliste / Liste des sources / Elenco delle fonti / Lista de fuentes
Abbreviations of cited Reference Works / Abkürzungen der Quellen / Abréviations des sources / Abbreviazioni bibliografiche / Abreviaturas de las fuentes
General Abbreviations / Allgemeine Abkürzungen / Abréviations générales / Elenco delle abbreviazioni / Abreviaturas generales
Pseudonyms / Pseudonyme / Pseudonymes / Pseudonimi / Pseudónimos. 12. F–J. Sz-y
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I
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Citation preview
International Encyclopedia of Pseudonyms Internationale Enzyklopädie der Pseudonyme Encyclopédie Internationale des Pseudonymes Enciclopedia Internazionale degli Pseudonimi Enciclopedia Internacional de Pseudónimos
International Encyclopedia of Pseudonyms Part I: Real Names [Volumes 1 - 9] Part II: Pseudonyms [Volumes 10 - 16]
Internationale Enzyklopädie der Pseudonyme Teil I: Wirkliche Namen [Bände 1 - 9] Teil II: Pseudonyme [Bände 10 - 16]
Encyclopédie Internationale des Pseudonymes Partie I: Vrais noms [Tomes 1 - 9] Partie II: Pseudonymes [Tomes 10 - 16]
Enciclopedia Internazionale degli Pseudonimi Parte I: Veri nomi [Tomi 1 - 9] Parte II: Pseudonimi [Tomi 10 - 16]
Enciclopedia Internacional de Pseudónimos Parte I: Nombres verdaderos [Tomos 1 - 9] Parte II: Pseudónimos [Tomos 10 - 16]
K A G A Saur München 2008
International Encyclopedia of Pseudonyms Part II: Pseudonyms
Internationale Enzykl
Project Hyreus: Mars SampleReturnMission Utilizing in Situ Propellant Production
NASA Technical Reports Server (NTRS)
Bruckner, A. P.; Thill, Brian; Abrego, Anita; Koch, Amber; Kruse, Ross; Nicholson, Heather; Nill, Laurie; Schubert, Heidi; Schug, Eric; Smith, Brian
1993-01-01
Project Hyreus is an unmanned Mars samplereturnmission that utilizes propellants manufactured in situ from the Martian atmosphere for the return voyage. A key goal of the mission is to demonstrate the considerable benefits of using indigenous resources and to test the viability of this approach as a precursor to manned Mars missions. The techniques, materials, and equipment used in Project Hyreus represent those that are currently available or that could be developed and readied in time for the proposed launch date in 2003. Project Hyreus includes such features as a Mars-orbiting satellite equipped with ground-penetrating radar, a large rover capable of sample gathering and detailed surface investigations, and a planetary science array to perform on-site research before samples are returned to Earth. Project Hyreus calls for the Mars Landing Vehicle to land in the Mangala Valles region of Mars, where it will remain for approximately 1.5 years. Methane and oxygen propellant for the Earth return voyage will be produced using carbon dioxide from the Martian atmosphere and a small supply of hydrogen brought from Earth. This process is key to returning a large Martian sample to Earth with a single Earth launch.
Project Hyreus: Mars samplereturnmission utilizing in situ propellant production
NASA Technical Reports Server (NTRS)
Abrego, Anita; Bair, Chris; Hink, Anthony; Kim, Jae; Koch, Amber; Kruse, Ross; Ngo, Dung; Nicholson, Heather; Nill, Laurie; Perras, Craig
1993-01-01
Project Hyreus is an unmanned Mars samplereturnmission that utilizes propellants manufactured in situ from the Martian atmosphere for the return voyage. A key goal of the mission is to demonstrate the considerable .