Original scientific paper The paper elaborates a mathematical model forming the basis for a computer-simulated model for a diesel propulsion engine. The model is applied in the analysis of steady and transient operating conditions of a turbocharged slow-speed diesel propulsion engine and a fixed blade propeller. Special attention has been paid to examining the stability and availability under a...

John R. Brophy , Jet Propulsion Laboratory, Caltech Louis Friedman ,Executive Director Emeritus, The Planetary Society Nathan J. Strange, Jet Propulsion Laboratory, Caltech Thomas A. Prince . Director, Keck Institute for Space Studies, Caltech Damon Landau, Jet Propulsion Laboratory, Caltech Thomas Jones . Florida Institute for Human and Machine Cognition Russell Schweickart , B612 Foundation C...

Recent wheelchair modelling work has focused on the efficiency of the human-racing wheelchair interaction. This paper builds on this work, investigating the development of a model appropriate for those using standard wheelchairs. A wheelchair racing model was initially used as the starting point for the generation of a number of model variations. Force predictions from these variations were com...

Methods for the three-dimensional (3-D) kinematic analysis of the shoulder complex (humerus relative to trunk) are presented and their use demonstrated in this analysis of shoulder motion during wheelchair propulsion. Ten subjects propelled two different wheelchairs (adjustable and conventional chairs) while the motions of the left arm and trunk were measured using a video tracking system. Eule...

Due to the dynamic development of environmentally friendly aircraft propulsion, paper describes effect distributed propulsion on emission and fuel consumption changes in comparison with traditional propulsion. A is a composed set units located leading edges wings or fuselage, generating thrust symmetrically both sides fuselage. The analysis was based technical data AOS H2 motor glider. During t...

Purpose: This study aimed to first investigate synchronous (SYN) versus asynchronous (ASY) mode of propulsion and, second, investigate the wheel camber effects on sprinting performance as well as temporal parameters. Method: Seven wheelchair basketball players performed four maximal eight-second sprints on a wheelchair ergometer. They repeated the test according to two modes of propulsion (SYN ...

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BACKGROUND It has been suggested that a higher intra-individual variability benefits the motor learning of wheelchair propulsion. The present study evaluated whether feedback-induced variability on wheelchair propulsion technique variables would also enhance the motor learning process. Learning was operationalized as an improvement in mechanical efficiency and propulsion technique, which are th...

NASA researchers recently demonstrated successful real-time fault detection and isolation of a virtual reusable launch vehicle main propulsion system. Using a detailed simulation of a vehicle propulsion system to produce synthesized sensor readings, the NASA team demonstrated that advanced diagnostic algorithms, running on flight-like computers, can, in real time, successfully diagnose the pres...