Volume 8 article 168 pages: 13 - 21

Published: Jun 20, 2017

APPLICATION OF THE AERODYNAMICAL BRAKES ON TRAINS

Mirjana Puharic
Mirjana Puharic
Search for articles by this author
∙ Vojkan Lubanin
Vojkan Lubanin
Search for articles by this author
∙ Slavica Ristic
Slavica Ristic
Search for articles by this author
∙ Suzana Linic
Suzana Linic
Search for articles by this author
Open PDF

Abstract

This paper presents the aerodynamical brake system, as second brake system, in cases when it is necessary to speed down the train or at emergency situations when primary brake sys-tem is out of order. In this brake system, braking force is a result of aerodynamical drag generated on pulled-up aerodinamical brake panels. These panels are especially effective at high speeds because aerodynamical drag of panels is proportional to second exponent of vehicle’s speed. Calculation of braking force by panel surface unit was derived for the aerodynamical brake of concave shape and it was compared with test results for Maglev train on railway Yamanashy in Japan.

Keywords

aerodynamics brakes aerodynamic drag train

References

Yoshimura M., Saito S., Hosaka S., Tsunoda H., Characteristics of the Aerodynamic Brake of the Vehicle on the Yamanashi Maglev Test Line, QR of RTRI, vol.41, No.2, jun 2000.

Puharic, M., Model aerodinamickih istrazivanja vozova kod velikih brzina, doktorska disertacija, Zrenjanin, 2009.

Anderson, J.D., Fundamentals of aerody- namics, McGraw-Hill, inc, 1996.

Measurement  of  the  aerodynamic  pressures produced by passing trains-Harvez S. Lee- Valpe National Transportation Systems Center Cambridge- Proceeding of the 2002. ASME/IEEE Joint Rail Conference Washing- ton, 23-25. april 2002.

Puharic, M. Kutin, M. Burzic, M., Adamovic, Z., Aerotunelska ispitivanja modela vozova velikih brzina (Wind tunnel testing of high-speed train models), XXX Majski skup odrzavalaca Srbije, Vrnjacka banja, 2007.

Puharic, M., Aerodinamicki efekti koji se ja- vljaju pri prolasku vozova velikih brzina kroz tunele, Konferencija ZELKON, Niš, 2006.

Puharic, M., Adamovic, Z., Research of high speed trains in the subsonic wind tunnel- Ispitivanje brzih vozova u podzvucnom aerotunelu, Strojarstvo, Vol.50 (No.3), pp. 151-160, 2008.

Rebuffet, P., Aerodynamique experimentale, tome 1, Dunod, Paris, 1969.

Radosavljevic, A., Milutinovic, D., Usteda pogonske energije zeleznickih vucnih vozova, Istrazivanja i projektovanja za privredu 4 i 5, str 23-32, 2004.