Configurations of the Graf-Boklev (V-Style) SKI Jumper Model and Aerodynamic Parameters in a Wind Tunnel

• Authors: Jerzy Maryniak , Edyta Ładyżyńska-Kozdraś , Sławomir Tomczak
• Languages of publication: EN

Abstracts

EN

The paper discusses the results of wind tunnel tests for different angular configurations (φ1 and φ2) of a V-style (Graf-Boklev style) ski jumper model. The range of tested angles of attack was α = -10, 20, 30, 40 (deg), depending on a configuration. The configurations of the Graf-Boklev style ski jumper model were compared with the classic parallel style of ski jumping with the ski-opening angle λ = 0. Kl as a configuration for the parallel style of ski jumping was used as the reference configuration for other configurations with different ski-opening angles, i.e. λ = 0, 15, 25, 45 (deg). The results obtained have been presented graphically as aerodynamic parameters within a specific angle of attack.

Keywords

EN

ski jumping; Graf-Boklev configuration; V-style; aerodynamic characteristics

• Publisher: De Gruyter Open
• Journal: Human Movement
• Year: 2009
• Volume: 10
• Issue: 2
• Pages: 130-136

Dates

published

1 - 12 - 2009

online

14 - 12 - 2009

Contributors

author

Jerzy Maryniak

• The Polish Air Force Academy, Dęblin, Poland

author

Edyta Ładyżyńska-Kozdraś

• Faculty of Mechatronics, Warsaw University of Technology, Warsaw, Poland

author

Sławomir Tomczak

• Faculty of Mechanical, Power and Aeronautical Engineering, Warsaw University of Technology, Warsaw, Poland

References

• Luhtanen P., Pulli M., Ski-jumping champion exploits ballistics and aerodynamics. Griffin the SAAB-SCANIA, Linkoping, 1989.
• Maryniak J., Longitudinal stability of a ski jumper in flight [in Polish]. NIT - Nauka Innowacje Technika, 2003, 1, 5-11.
• Maryniak J., Krasnowski B., Longitudinal stability of a ski jumper. In: Proceeding of the 1st Polish Symposium "System, Modeling, Control" [in Polish]. PTC, Łódź 1974, 195-209.
• Maryniak J., Static and dynamic investigations of human motion. In: Proceedings of the Congress Mechanics of Biological Solids. Bulgarian Academy of Sciences, Sofia 1977, 151-174.
• Maryniak J., Direct numerical simulation of ski jumps. In: Proceedings of the 7th Symposium on Simulation of Dynamic Processes [in Polish]. Wydział Elektryczny, Politechnika Warszawska, Warszawa 1993, 255-264.
• Maryniak J., Dynamics of a ski jumper in flight: direct numerical simulation [in Polish]. NIT - Nauka Innowacje Technika, 2003, 2, 41-51.
• Maryniak J., Ski jumps - take-off, flight stability, aerodynamics of a ski jumper in V-style configuration [in Polish]. NIT - Nauka Innowacje Technika, 2004, 1, 31-40.
• Maryniak J., Tomczak A., Dziubiński A., Machu M., Aerodynamic tests of a ski jumper model [in Polish]. DOR-253/2002, ZNB Dynamiki Obiektów Ruchomych, Politechnika Warszawska, Warszawa 2002.
• Maryniak J., Wołek A., The effects of ski jumper's posture of the flight trajectory [in Polish]. Zeszyty Naukowe AWF we Wrocławiu, 1991, 53, 129-137.
• Maryniak J., Dynamic theory of moving objects [in Polish]. P race Naukowe Politechniki Warszawskiej. Mechanika. Politechnika Warszawska, Warszawa 1976, 32.
• Litwińczuk M., Selerowicz W., Skrzyński S., Tarnogrodzki A., Lab exercises in fluid mechanics [in Polish]. Politechnika Warszawska, Warszawa 1991.
• Tomczak A., Maryniak J., Aerodynamic tests of the V-style ski jumper model. In: Maryniak J. (ed.), Mechanics in aviation [in Polish]. Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, Warszawa 2002, 493-509.
• Maryniak J. Leśniewska A., Mathematical modeling of dynamics of ski jumper in fight by using the Boltzmann-Hamel equations [in Russian]. Biomechanika, 1978, 7, 10-16.
• Maryniak J., Krasnowski B., Balance and longitudinal stability of a ski jumper in flight [in Polish]. Mechanika Teoretyczna i Stosowana, 1974, 2(3), 351-373.

Identifiers

DOI

10.2478/v10038-009-0012-4