As CubeSats grow in both numbers and capability, the need to extend their reach with integrated propulsion systems is becoming clear. A water-electrolysis propulsion system for 3U CubeSats is proposed that could fill the gap in the available propulsion systems at this scale. Combining the advantages of electric propulsion with those of chemical rockets, the system is safe both to handle and to ...

Laboratory-based simulators afford many advantages for studying physiology and biomechanics; however, they may not perfectly mimic wheelchair propulsion over natural surfaces. The goal of this study was to compare kinetic and temporal parameters between propulsion overground on a tile surface and on a dynamometer. Twenty-four experienced manual wheelchair users propelled at a self-selected spee...

This project was an experiment on the feasibility of superconductorbased maglev trains. Two classmates, Kyle Tessier-Lavigne and Michael Stern, and I worked in conjunction to produce a magnetic track, levitating train car, and propulsion system. This paper focuses on my part of the project, the propulsion system. The propulsion system is similar to a linear motor, with a row of solenoids attrac...

The objective of this paper is to describe and apply methods that could assist the propulsion system designer in the evaluation and selection of propulsion technologies. The focus here is on the aerothermodynamic aspects of the problem, particularly estimation of engine internal losses. This is accomplished by leveraging developments in second law analysis methods that are able to quantify the ...

Abstract This paper presents the state of art in electric aircraft propulsion systems. The necessary reduction greenhouse gas emissions on global scale forces aviation engineers to search for ‘green’ solutions. Electric is a potential and relatively intuitive choice flight operations. showcases four architectures systems being now considered utilise advantages with commercially profitable opera...

The configuration of a marine propulsion system is selected with regard to the maximum power resulting from its maximum design speed and displacement. The propulsion systems of high speed vessels use three or even four propellers, and each propulsion unit may be multi-engine. High speed vessels are designed for maximum speeds, but their factual exploitation speed parameters are usually consider...

Distributed propulsion and lightweight structures on transport aircraft pose a significant opportunity to meet next generation aircraft requirements including reduced fuel burn/emissions and enhanced takeoff/landing performance. The objective of this research is to conduct multidisciplinary design analysis and optimization to demonstrate a novel concept of flexible wing shaping aircraft using d...

Wheelchair propulsion has been reported to be responsible for musculoskeletal pain in the upper extremities. Epidemiological studies have shown a high prevalence of shoulder complaints in paraplegic and quadriplegic spinal cord injured (SCI) people. It has been argued that the high incidence of shoulder complaints in SCI was the result of the weight‐bearing or propuls...