Flying Hill in 2011 by Johan Reemen Evensen of Norway. In 2014 ski flying hills of the same size, i.e. HS225, were constructed in Kulm and Planica. The aim of this paper is to study the possibility of a new world record being set at the newly-reconstructed Planica hill. The study uses the flight curves determined from the kinematic properties of flights performed at the Planica World Cup Ski Flying competitions (2008/2009 and 2012/2013 seasons) and the 2010 Ski Flying World Championship. METHODS: The simulation of the new world record flight curve is based on Simon Ammann's 236- metre-long flight which earned Ammann the title of 2010 World Ski Flying Champion (Figure 1). The geometric features of the HS225 Planica hill are adapted from the structure's official FIS profile. RESULTS: Figure 1 presents a simulation of the new world record. The angle of the landing slope of HS225 at a world record of 247m is very low (approx. 25 arc degrees), which would cause large forces to be applied to the ski flier during landing. DISCUSSION: The analysis of the basic geometric properties of Planica's enlarged HS225 profile showed that attempting to set an new world record on this hill would be both difficult and risky. In order to break the record, ski fliers would have to fly at least 22m past the hill size point (225m). Landing at the 247m mark would be rather dangerous for jumpers. The flight incidence angle before landing would be 12 degrees, and the safety of the landing as well as outrun would be compromised due to large forces acting at the contact point with the surface (Jost & Vodicar, 2013). Setting new world records at the reconstructed Kulm and Planica hills will be highly demanding and dangerous. Safe world-record flights are possible at the HS240 (ZU= min 140m) hill. CONCLUSION: Currently, the ski jumping technique used enables jumpers to fly safely past the world record mark of 246.5m, but the size of ski flying hills does not. Unfortunately, recent reconstructions of the Kulm and Planica hills to a 225m size are unlikely to meet the expectations of the sports world for record-breaking flights. Such flights would only be possible if the FIS allowed hill sizes to be increased to an HS240m size, with the minimum distance between the edge of the jump and the lowest point at radius r2 is at least 140m. --- The hosting University of Jyväskylä is planning to publish conference proceedings "Science and Nordic Skiing III". In case you are interested in this publication please contact the editors (Anni Hakkarainen anni.s.j.hakkarainen@jyu.fi) to become registered for the book.
© Copyright 2015 3rd International Congress on Science and Nordic Skiing - ICSNS 2015. 5-8 June 2015, Vuokatti, Finland. Julkaistu Tekijä University of Jyväskylä; University of Salzburg. Kaikki oikeudet pidätetään. / Kääntänyt https://www.DeepL.com/Translator