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Next generation of human space flight systems /
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
New York :
Nova Science,
©2009.
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| Colección: | Space science, exploration and policies series.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- NEXT GENERATION OF HUMANSPACE FLIGHT SYSTEMS; NEXT GENERATION OF HUMANSPACE FLIGHT SYSTEMS; CONTENTS; PREFACE; NASA: AGENCY FACES CHALLENGESDEFINING SCOPE AND COSTS OF SPACESHUTTLE TRANSITION AND RETIREMENT*; WHAT GAO FOUND; WHY GAO DID THIS STUDY; WHAT GAO RECOMMENDS; RESULTS IN BRIEF; BACKGROUND; NASA FACES CHALLENGES DEFINING SSP TRANSITIONAND RETIREMENT SCOPE AND COSTS; Lack of Finalized Constellation Program RequirementsContributes to SSP Transition and Retirement Uncertainties.
- NASA Will Not Complete the TPA Process Until after theAgency's Budget Request for Fiscal Year 2010 Is SubmittedOther Challenges Further Hamper NASA's Efforts; SSP TRANSITION AND RETIREMENT COSTS ARE NOTTRANSPARENT IN NASA'S BUDGET; SSP Budget Line; Cross-Agency Support Appropriation Account; CONCLUSIONS; RECOMMENDATION FOR EXECUTIVE ACTION; AGENCY COMMENTSAND OUR EVALUATION; APPENDIX I: OBJECTIVES, SCOPE, AND METHODOLOGY; APPENDIX II: COMMENTS FROM THE NATIONALAERONAUTICS AND SPACE ADMINISTRATION; REFERENCES; ARES I AND ORION PROJECT RISKS ANDKEY INDICATORS TO MEASURE PROGRESS*; WHAT GAO FOUND.
- WHY GAO DID THIS STUDYBACKGROUND; REQUIREMENTS SETTING IS A PRIMARY CHALLENGEFOR BOTH THE ARES I AND ORION PROJECTS; TECHNOLOGY AND HARDWARE GAPS ALONG WITHREQUIREMENTS UNCERTAINTY ARE INCREASING RISK; CONSTELLATION COST ESTIMATES ARE PRELIMINARYDUE TO REQUIREMENTS UNCERTAINTY; SCHEDULE PRESSURES ADD ADDITIONALRISKS FOR ARES I AND ORION; Ares I; Orion; TEST FACILITIES FOR ARES I AND ORION INSUFFICIENT; OVERSIGHT BASED ON BEST PRACTICES AND KEYINDICATORS IMPORTANT FOR PROGRAM SUCCESS; Weight Growth; Software Complexity; Indicators that Can be Used to AssessKnowledge Gap at Key Junctures.
- Preliminary Design ReviewCritical Design Review; Production Review; CONCLUDING OBSERVATIONS; REFERENCES; NASA SUPPLIER BASE: CHALLENGES EXISTIN TRANSITIONING FROM THE SPACESHUTTLE PROGRAM TO THE NEXTGENERATION OF HUMAN SPACEFLIGHT SYSTEMS*; WHAT GAO FOUND; WHY GAO DID THIS STUDY; WHAT GAO RECOMMENDS; ABBREVIATIONS; RESULTS IN BRIEF; BACKGROUND; NASA'S NEW PLANS AND PROCESSES ESTABLISH AFOUNDATION FOR MANAGING TRANSITION, RETIREMENT, AND THE SUPPLIER BASE; New Plans Reflect NASA's Overall Strategyto Manage Transition and Retirement.
- NASA Has Developed New Decision-MakingProcess to Manage Supplier BaseEFFECTIVENESS OF NASA'S TRANSITION PLANS ANDPROCESSES NOT KNOWN UNTIL CONSTELLATION'SSUPPLIER BASE NEEDS BECOME CLEARER AND MOREDECISIONS HAVE BEEN PROCESSED; Constellation Lacks Detailed Supplier Base Needs Requirements; Increasing Number of Supplier and Capability Decisions to Be Madein Coming Years Could Overwhelm NASA's Processes; OBSOLESCENCE, WORKFORCE ISSUES, AND TRANSITION COST ESTIMATES POSE OTHERCHALLENGES TO NASA'S TRANSITION EFFORTS; Obsolescence; Supplier Viability; Potential Loss of NASA Expertise.