Cost-effective technology advancement directions for electric propulsion transportation systems in earth-orbital missions [PDF]
The directions that electric propulsion technology should take to meet the primary propulsion requirements for earth-orbital missions in the most cost effective manner are determined.
Regetz, J. D., Jr., Terwilliger, C. H.
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Research in rocket and jet propulsion [PDF]
When considering the problems of basic research in rocket and jet propulsion, it is profitable to keep in mind the salient features of rocket- and jet-propulsion engineering.
Tsien, Hsue-Shen
core
Self-Propulsion of Liquid Marbles: Leidenfrost-Like Levitation Driven by the Marangoni Flow [PDF]
Self-propulsion of liquid marbles filled with aqueous alcohol solutions and placed on a water surface is reported. The characteristic of velocity of the marbles is about 0.1 m/s. The phenomenon of self-propulsion is related to the Marangoni solutocapillary flow caused by the condensation of alcohol, evaporated from the liquid marble, on a water surface.
arxiv
Evaluation of the use of on-board spacecraft energy storage for electric propulsion missions [PDF]
On-board spacecraft energy storage represents an under utilized resource for some types of missions that also benefit from using relatively high specific impulse capability of electric propulsion.
Palmer, F. M., Poeschel, R. L.
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Identifying candidates for targeted gait rehabilitation: better prediction through biomechanics-informed characterization [PDF]
BACKGROUND: Walking speed has been used to predict the efficacy of gait training; however, poststroke motor impairments are heterogeneous and different biomechanical strategies may underlie the same walking speed.
Awad, Louis N.+2 more
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Space propulsion systems. Present performance limits and application and development trends [PDF]
Typical spaceflight programs and their propulsion requirements as a comparison for possible propulsion systems are summarized. Chemical propulsion systems, solar, nuclear, or even laser propelled rockets with electrical or direct thermal fuel ...
Buehler, R. D., Lo, R. E.
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The NASA low thrust propulsion program [PDF]
The NASA OAST Propulsion, Power, and Energy Division supports a low thrust propulsion program aimed at providing high performance options for a broad range of near-term and far-term mission and vehicles.
Bennett, Gary L., Stone, James R.
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The NASA Electric Propulsion Program [PDF]
The NASA OAST Propulsion, Power, and Energy Division supports an electric propulsion program aimed at providing benefits to a broad class of missions. Concepts which have the potential to enable or significantly benefit space exploration and exploitation
Byers, David C.+2 more
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Shuttle orbiter with telescoping main propulsion unit and payload [PDF]
An improved Space Shuttle with variable internal volume is provided. The Space Shuttle Orbiter includes a telescoping main propulsion unit. This main propulsion unit contains the main rocket engines and fuel tanks and telescopes into the Space Shuttle. A
Macconochie, Ian O.
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A real time Pegasus propulsion system model for VSTOL piloted simulation evaluation [PDF]
A real time propulsion system modeling technique suitable for use in man-in-the-loop simulator studies was developd. This technique provides the system accuracy, stability, and transient response required for integrated aircraft and propulsion control ...
Creekmore, R.+2 more
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