Aerodynamics of ski jumping: experiments and CFD simulations

Meile, Walter; Reisenberger, Ewald; Mayer, M.; Schmölzer, Bernhard; Müller, Wolfram; Brenn, Günter

doi:10.1007/s00348-006-0213-y

Cited by 61 publications

(37 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The equipment complied with Fe´de´ration Internationale de Ski [17] specifications. The following angles determine the posture of the ski jumper (based upon Meile et al [8], Schwameder [9], and Mu¨ller et al [14,15]). The ski opening angle (l) (Figure 3) was set at 201, 251 and 301.…”

Section: Hypothetical Ski Jumper and Competition Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanics of flight in ski jumping: aerodynamic stability in pitch

Marques-Bruna

Grimshaw

2009

Sports Technol.

View full text Add to dashboard Cite

This study examines aerodynamic stability in pitch in ski jumping. Static stability implies automatic return to trimmed flight after a sudden disturbance and dynamic stability involves gradual damping of oscillatory motion. Both have implications for flight control and safety. A 3-D inertia model of a ski jumper and the Planica K185 jumping hill profile were constructed using computer-aided design. Inertia, jump performance, and aerodynamic efficiency and stability parameters were computed for variations in V-style posture using mathematical modeling. Pitching moment at a 01 angle of attack was positive, and the condition dM/dao0 at equilibrium was satisfied, indicating that the athlete is inherently stable. Enhanced flight posture consists of a ski-opening angle of 301 and a forwardleaning angle of 101. This is a high-lift configuration with a large static margin that triggers a steep dM/da slope and high oscillatory frequency upon deviations from trimmed attitude. Mechanisms of stability in pitch are proposed, founded upon theoretical aerodynamics. r

show abstract

Section: Hypothetical Ski Jumper and Competition Conditionsmentioning

confidence: 99%

“…Lateral motion depends on cross-coupling of roll and yaw [7]; however, longitudinal stability can be assessed independently. We might expect to find different postural configurations of the ski jumper that vary in terms of aerodynamic efficiency [8,9] and longitudinal stability [10].…”

Section: Introductionmentioning

confidence: 99%

Mechanics of flight in ski jumping: aerodynamic stability in pitch

Marques-Bruna

Grimshaw

2009

Sports Technol.

View full text Add to dashboard Cite

show abstract

“…The size of the ski equipment is determined by FIS regulations. 18) Previous research 12) indicated that world-class ski jumpers have a hip angle between 140°and 160°. In this paper, the hip angle (£) range of the ski jumper model is from 140°to 160°.…”

Section: Ski Jumper Modelmentioning

confidence: 99%

“…Meile et al 12) analyzed the aerodynamic characteristics of ski jumping postures and ski suits using wind tunnel tests and CFD analysis. The basis for changes in regulations was inferred with respect to safety and health improvements.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Analysis on Postures of Ski Jumpers during Flight using Computational Fluid Dynamics

Ryu

Cho

2015

Trans. Japan Soc. Aero. S Sci.

View full text Add to dashboard Cite

The aerodynamic characteristics of a ski jumper model in various postures are analyzed using a commercial computational fluid dynamics tool. The purpose of this study is to understand the aerodynamic characteristics of ski jumping. The range of flying postures for ski jumpers is determined as widely as possible to simulate the optimal flight position of ski jumpers. The computational results are in good agreement with experimental results. The aerodynamic characteristics are influenced by the hip and body angles of the ski jumper model during the flight. The lift-to-drag ratio of ski jumpers is increased as hip angle increases. However, as the hip angle increases, the region of the angle of attack becomes restricted for stable flight. The augmentation of the body angle can enhance the most favorable angle of attack, because the body angle is likely to result in a cambered airfoil. In conclusion, the ski jumper should maintain a high hip angle with an angle of attack that stabilizes the flight condition, to improve flight distance.

show abstract

“…Ski jumping is similar to wingsuit flying because changes in the athlete's position and the space between the garments and the human body result in variable lift and drag in both cases [3][4][5]. For a ski jumper, the importance of factors influencing aerodynamics, such as the athlete's capabilities and experience, the posture and the speed were studied for a wide range of angles of attack [6].…”

Section: Introductionmentioning

confidence: 99%

Towards a Combined CAD and CFD Development Process of a Wingsuit

Ansari

Krzywinski

Fröhlich

2018

The 12th Conference of the International Sports Engineering Association

View full text Add to dashboard Cite

A wingsuit gives the human body an airfoil-like shape to fly in the sky. The paper proposes a holistic design approach combining the fluid mechanical simulation of the function with appropriate CAE-software for the generation of pattern cuttings. A parametric CAD model of the flyer wearing a wingsuit is created enabling easy changes in its posture and the wingsuit geometry. The flow simulation is set up using a commercial CFD code. Since there is no database available for the flow around a wingsuit, validation is conducted for a delta wing. This configuration is close to a wingsuit in terms of geometry and flow regime, but simpler and with sound experimental data available. Boundary conditions, mesh and selected turbulence model are validated with this configuration and experience gained about parameters of the solution process. Due to the computational link between CAE and CFD it's possible to accelerate the development of wingsuits.

show abstract

Aerodynamics of ski jumping: experiments and CFD simulations

Cited by 61 publications

References 10 publications

Mechanics of flight in ski jumping: aerodynamic stability in pitch

Mechanics of flight in ski jumping: aerodynamic stability in pitch

Aerodynamic Analysis on Postures of Ski Jumpers during Flight using Computational Fluid Dynamics

Towards a Combined CAD and CFD Development Process of a Wingsuit

Contact Info

Product

Resources

About