Results 21 to 30 of about 9,942,018 (291)
Prediction of Propulsion Kinematics and Performance in Wheelchair Rugby
Frontiers in Sports and Active Living, 2022 Prediction of propulsion kinematics and performance in wheelchair sports has the potential to improve capabilities of individual wheelchair prescription while minimizing testing requirements. While propulsion predictions have been developed for daily propulsion, these have not been extended for maximal effort in wheelchair sports.
David S. Haydon +8 more
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Comparison of Aero-Propulsive Performance Predictions for Distributed Propulsion Configurations [PDF]
55th AIAA Aerospace Sciences Meeting, 2017 NASA's X-57 "Maxwell" flight demonstrator incorporates distributed electric propulsion technologies in a design that will achieve a significant reduction in energy used in cruise flight. A substantial portion of these energy savings come from beneficial aerodynamic-propulsion interaction.
Nicholas K. Borer +7 more
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Performance optimization of the gasdynamic mirror propulsion system [PDF]
34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998 Nuclear fusion appears to be a most promising concept for producing extremely high specific impulse rocket engines. Engines such as these would effectively open up the solar system to human exploration and would virtually eliminate launch window restrictions. A preliminary vehicle sizing and mission study was performed based on the conceptual design of
Emrich, William J., Kammash, Terry B.
openaire +2 more sources
Développement d’un modèle de performance aéro-propulsive en vol de croisière – Application sur un avion Cessna Citation X [PDF]
, 2022 L’étude de performance d’un avion est un aspect critique dans le monde de l’aviation. Que ce soit pour un enjeu de sécurité, écologique ou économique, il y a de nombreux avantages à prédire la performance en vol d’un avion.
Stepan, Anca
core
A Computational Fluid Dynamics Investigation of a Flapping Hydrofoil as a Thruster
Biomimetics, 2023 The paper features a computational fluid dynamics study of a flapping NACA0015 hydrofoil moving with a combination of sinusoidal heaving and pitching. Several kinematic configurations are explored, varying sequentially pitch and heave amplitude, Strouhal
Luca Alberti +3 more
doaj +1 more source
Numerical Investigation of the Semi-Active Flapping Foil of the Wave Glider
Journal of Marine Science and Engineering, 2019 A numerical investigation is conducted to study the propulsive performance of the semi-active flapping foil of the wave glider, where the heaving smotion is fully prescribed, and the pitching motion is determined by the hydrodynamic force and torsion ...
Zhanfeng Qi +6 more
doaj +1 more source
Journal of Biomechanical Science and Engineering, 2009 The objectives of this study were to investigate the effect of trunk undulation on the swimming performance in underwater dolphin kick, and to clarify the ideal trunk undulation form. The reference swimming motion of an elite swimmer was firstly acquired
Motomu NAKASHIMA
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Determining the Optimum Power Load in Jump Squat Using the Mean Propulsive Velocity. [PDF]
PLoS ONE, 2015 The jump squat is one of the exercises most frequently used to improve lower body power production, which influences sports performance. However, the traditional determination of the specific workload at which power production is maximized (i.e., optimum
Irineu Loturco +9 more
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Effects of Regular Waves on Propulsion Performance of Flexible Flapping Foil
Applied Sciences, 2018 The objective of the present study is to analyze the effects of waves on the propulsive performance and flow field evolution of flexible flapping foil, and then offer a way to take advantage of wave energy.
Peng Liu +4 more
doaj +1 more source
Optimal Design and Dynamic Analysis of Hydrofoil Mechanism of Wave Glider
Journal of Marine Science and Engineering, 2022 A wave glider can convert vertical wave motion into its forward propulsion. There are many factors affecting the propulsion performance of a wave glider.
Hongqiang Sang +5 more
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