Power Requirements Determined for High-Power-Density Electric Motors for Electric Aircraft Propulsion [PDF]
Future advanced aircraft fueled by hydrogen are being developed to use electric drive systems instead of gas turbine engines for propulsion. Current conventional electric motor power densities cannot match those of today s gas turbine aircraft engines ...
Brown, Gerald V., Johnson, Dexter
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Space transportation systems, launch systems, and propulsion for the Space Exploration Initiative: Results from Project Outreach [PDF]
A number of transportation and propulsion options for Mars exploration missions are analyzed. As part of Project Outreach, RAND received and evaluated 350 submissions in the launch vehicle, space transportation, and propulsion areas.
Augenstein, B. +4 more
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Evaluation of on-board hydrogen storage methods for hypersonic vehicles [PDF]
Hydrogen is the foremost candidate as a fuel for use in high speed transport. Since any aircraft moving at hypersonic speeds must have a very slender body, means of decreasing the storage volume requirements below that for liquid hydrogen are needed. The
Adeyiga, A. A. +4 more
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HASA: Hypersonic Aerospace Sizing Analysis for the Preliminary Design of Aerospace Vehicles [PDF]
A review of the hypersonic literature indicated that a general weight and sizing analysis was not available for hypersonic orbital, transport, and fighter vehicles.
Berkowitz, Brian M., Harloff, Gary J.
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EnergiesIn response to the IMO’s decarbonisation strategy, hydrogen—especially green hydrogen—becomes a promising alternative fuel in shipping. This article provides a comparative analysis of two hydrogen propulsion technologies suitable for a service vessel (SOV) operating in offshore wind farms: hydrogen fuel cells and hydrogen-powered internal combustion ...
Monika Bortnowska, Arkadiusz Zmuda
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Preliminary scientific rationale for a voyage to a thousand astronomical units [PDF]
A proposed mission to 1000 astronomical units (TAU) is under study by the Jet Propulsion Laboratory. Launch date for a TAU mission is likely to be well into the first decade of the 21st century.
Etchegaray, M. I.
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Advanced supersonic technology propulsion system study [PDF]
This study had the objectives of determining the most promising conventional and variable cycle engine types; the effect of design cruise Mach number (2.2, 2.7 and 3.2) on a commercial supersonic transport; effect of advanced engine technology on the ...
Allan, R. D., Szeliga, R.
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Analysis of a topping-cycle, aircraft, gas-turbine-engine system which uses cryogenic fuel [PDF]
A topping-cycle aircraft engine system which uses a cryogenic fuel was investigated. This system consists of a main turboshaft engine that is mechanically coupled (by cross-shafting) to a topping loop, which augments the shaft power output of the system.
Fishbach, L. H., Turney, G. E.
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Single-Metal Hybrid Micromotor. [PDF]
Front Bioeng Biotechnol, 2022 Li D +7 more
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Aluminum-fueled rockets for the space transportation system [PDF]
Aluminum-fueled engines, used to propel orbital transfer vehicles (OTV's), offer benefits to the Space Transportation System (STS) if scrap aluminum can be scavenged at a reasonable cost. Aluminum scavenged from Space Shuttle external tanks could replace
Cutler, Andrew Hall
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