Download A Constrained Space Exploration Technology Program: A Review by Committee to Review NASA 's Exploration Technology PDF

By Committee to Review NASA 's Exploration Technology Development Program, National Research Council

In January 2004, President George W. Bush introduced the imaginative and prescient for area Exploration (VSE), which steered NASA to 'Extend human presence around the sunlight procedure, beginning with a human go back to the Moon via the 12 months 2020, in training for human exploration of Mars and different destinations,' between different targets. As said within the VSE, major know-how improvement might be essential to accomplish the ambitions it articulates.NASA's Exploration expertise improvement application (ETDP) is designed to help, boost, and eventually give you the valuable applied sciences to satisfy the pursuits of the VSE. This publication, a evaluate of the ETDP, is largely supportive of the motive and pursuits of the VSE, and reveals the ETDP is making development in the direction of the acknowledged targets of expertise improvement. in spite of the fact that, the ETDP is working inside of major constraints which restrict its skill to effectively accomplish these pursuits - the nonetheless dynamic nature of the Constellation software standards, the limitations imposed through a restricted price range, the competitive time scale of early know-how deliverables, and the will to totally hire the NASA group.

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Additional resources for A Constrained Space Exploration Technology Program: A Review of NASA's Exploration Technology Development Program

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Bearings and seals, robots, EVA suits, ­crawlers) under long-term exposure are necessary for the ETDP to develop and prove the criticality of these vital resources on the Moon and Mars. The lack of plans to include a full-scale test facility negatively impacts the effectiveness of the effort in a major way and if left unresolved virtually guarantees failure to reach project goals expressed as TRL 6. Alignment with the Vision for Space Exploration: Yellow Flag The impact of the Lunar Dust Mitigation project on the VSE is clearly enabling, and this is understood by the Constellation Program.

The CEV contractor has built a full-scale heat shield test article and will build the flight heat shield. These developments are being directed and reviewed by NASA to ensure the coordinated consideration of reentry mechanical and thermal loads. There is no possibility of alternate technologies being developed within the ETDP. The plan is to have an acceptable TPS design by CEV Preliminary Design Review (PDR) and to have the technology matured by CEV Final Design Review (FDR). Ratings Quality: Yellow Flag The heat shield is being designed using heating rate predictions from an uncoupled analysis; that is, the char surface temperatures are assumed to be radiation equilibrium temperatures rather than being calculated from a heat ASSESSMENTS OF THE PROJECTS OF THE EXPLORATION TECHNOLOGY DEVELOPMENT PROGRAM 19 balance for the ablating heat shield.

Budgets are tracked and funds can be moved from one area to another on a quarterly basis. However, it is difficult to quickly add new organizations into the effort from a contractual perspective, which limits the project’s ability to include new suppliers. It is difficult to assess how the project will fit into the overall Constellation effort. Most of the technology items discussed are in the early design stage. Milestones for early in 2008 include design and requirements reviews. Design and analysis reports are due later in the year.

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