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portada Assessing Potential Propulsion Breakthroughs
Type
Physical Book
Author
Publisher
Language
English
Pages
34
Format
Paperback
Dimensions
24.6 x 18.9 x 0.2 cm
Weight
0.08 kg.
ISBN13
9781287246176
Categories

Assessing Potential Propulsion Breakthroughs

Nasa Technical Reports Server (Ntrs) (Author) · Marc G. Millis (Author) · Bibliogov · Paperback

Assessing Potential Propulsion Breakthroughs - Millis, Marc G. ; Nasa Technical Reports Server (Ntrs)

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Synopsis "Assessing Potential Propulsion Breakthroughs"

The term, propulsion breakthrough, refers to concepts like propellantless space drives and faster-than-light travel, the kind of breakthroughs that would make interstellar exploration practical. Although no such breakthroughs appear imminent, a variety of investigations into these goals have begun. From 1996 to 2002, NASA supported the Breakthrough Propulsion Physics Project to examine physics in the context of breakthrough spaceflight. Three facets of these assessments are now reported: (1) predicting benefits, (2) selecting research, and (3) recent technical progress. Predicting benefits is challenging since the breakthroughs are still only notional concepts, but kinetic energy can serve as a basis for comparison. In terms of kinetic energy, a hypothetical space drive could require many orders of magnitude less energy than a rocket for journeys to our nearest neighboring star. Assessing research options is challenging when the goals are beyond known physics and when the implications of success are profound. To mitigate the challenges, a selection process is described where: (a) research tasks are constrained to only address the immediate unknowns, curious effects or critical issues, (b) reliability of assertions is more important than their implications, and (c) reviewers judge credibility rather than feasibility. The recent findings of a number of tasks, some selected using this process, are discussed. Of the 14 tasks included, six reached null conclusions, four remain unresolved, and four have opportunities for sequels. A dominant theme with the sequels is research about the properties of space, inertial frames, and the quantum vacuum.

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