Results 141 to 150 of about 34,549 (198)
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Ski jumping boots limit effective take-off in ski jumping
Journal of Sports Sciences, 2001In this study, we measured the vertical and horizontal take-off forces, plantar pressures and activation patterns of four muscles (vastus lateralis, gluteus maximus, tibialis anterior, gastrocnemius) in 10 ski jumpers in simulated laboratory conditions when wearing either training shoes or ski jumping boots. We found significant differences in vertical
M, Virmavirta, P V, Komi
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Proceedings of the Institution of Civil Engineers - Water Management, 2010
This paper is concerned with ski jump design for overflow dams and chute spillways. Despite the vast scope of literature on this subject, research in this field is still needed. Three important issues are addressed: take-off angle, length of the jet trajectory and choking flow.
Savić, Ljubodrag +2 more
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This paper is concerned with ski jump design for overflow dams and chute spillways. Despite the vast scope of literature on this subject, research in this field is still needed. Three important issues are addressed: take-off angle, length of the jet trajectory and choking flow.
Savić, Ljubodrag +2 more
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Ski Jumping Takeoff in a Wind Tunnel With Skis
Journal of Applied Biomechanics, 2011The effect of skis on the force–time characteristics of the simulated ski jumping takeoff was examined in a wind tunnel. Takeoff forces were recorded with a force plate installed under the tunnel floor. Signals from the front and rear parts of the force plate were collected separately to examine the anteroposterior balance of the jumpers during the ...
Virmavirta Mikko +2 more
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SIGGRAPH ASIA 2016 Posters, 2016
We introduce a virtual ski jump system as indoor, experience-based entertainment. The goal of this system is an exciting, enjoyable, safe experience for an inexperienced person. The key of the system is the physical stimuli from below for realistic experience compared to other conventional systems.
Naoto Yoshida +3 more
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We introduce a virtual ski jump system as indoor, experience-based entertainment. The goal of this system is an exciting, enjoyable, safe experience for an inexperienced person. The key of the system is the physical stimuli from below for realistic experience compared to other conventional systems.
Naoto Yoshida +3 more
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Journal of Hydraulic Engineering, 2005
Ski jumps are a major element of each dam spillway because these are the only structures able to accomplish satisfactory energy dissipation for takeoff velocities in excess of some 20 m / s. This research aims to add to several hydraulic problems with ski jumps that have not yet been systematically solved so far.
Valentin Heller +2 more
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Ski jumps are a major element of each dam spillway because these are the only structures able to accomplish satisfactory energy dissipation for takeoff velocities in excess of some 20 m / s. This research aims to add to several hydraulic problems with ski jumps that have not yet been systematically solved so far.
Valentin Heller +2 more
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Numerical Investigation of Ski Jump Hydraulics
Journal of Hydraulic Engineering, 2020AbstractThe hydraulics of ski jumps is an issue of utmost importance in dam construction, the former being in practice the only existing solution as related to the dissipation of energy from high-s...
Lauria A., Alfonsi G.
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Journal of Hydraulic Engineering, 2008
Ski jumps are a standard element of dam spillways for an efficient energy dissipation if takeoff velocities are large, and stilling basins cannot be applied. This laboratory study investigates the hydraulic performance of a triangular-shaped, rather than the conventional circular-shaped, bucket placed at the takeoff of ski jumps.
Steiner, Remo +3 more
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Ski jumps are a standard element of dam spillways for an efficient energy dissipation if takeoff velocities are large, and stilling basins cannot be applied. This laboratory study investigates the hydraulic performance of a triangular-shaped, rather than the conventional circular-shaped, bucket placed at the takeoff of ski jumps.
Steiner, Remo +3 more
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Take-off aerodynamics in ski jumping
Journal of Biomechanics, 2001The effect of aerodynamic forces on the force-time characteristics of the simulated ski jumping take-off was examined in a wind tunnel. Vertical and horizontal ground reaction forces were recorded with a force plate installed under the wind tunnel floor. The jumpers performed take-offs in non-wind conditions and in various wind conditions (21-33 m s(-1)
M, Virmavirta, J, Kivekäs, P V, Komi
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1993
This article is a retrospective report on the injuries of competition ski jumps in Sapporo, Japan during the period between 1985 and 1990. In these five seasons, 56 official ski jumping games, including the world cup games, were held in Sapporo. The total number of jumps amounted to 7831 with 71 jumps with falls for a fall rate of 9.07 per 1000 jumps ...
T Yamamura, M Sugawara, S Ishii
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This article is a retrospective report on the injuries of competition ski jumps in Sapporo, Japan during the period between 1985 and 1990. In these five seasons, 56 official ski jumping games, including the world cup games, were held in Sapporo. The total number of jumps amounted to 7831 with 71 jumps with falls for a fall rate of 9.07 per 1000 jumps ...
T Yamamura, M Sugawara, S Ishii
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Aerodynamics of ski jumping suits
Sports Technology, 2011The primary purpose of this study is to understand the aerodynamic behaviour of textile fabrics used in ski jumping suits. Macro-scale (cylinder) and full-scale aerodynamic investigations of ski jumping suits and fabrics were undertaken. The aerodynamic effects of surface morphology of ski jumping fabrics were measured.
Harun Chowdhury +3 more
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