International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Zipline is an adventure activity that involves a steel cable suspended between two anchor points at varying heights and distances. Participants are secured to a trolley that moves along the cable, primarily driven by gravitational force. This sport, often classified as an adrenaline activity, has become increasingly popular for recreational use.
This paper presents a comprehensive analysis of the key parameters influencing zipline systems, including the modelling of movement dynamics and the selection of essential components. Utilizing the principles of the catenary curve, our approach draws parallels with established methodologies in cable car and cable crane systems.
To ensure the quality design and safe operation of zipline systems, it is crucial to analyse various factors, such as participant weight, rope anchoring methods, tension force, and angle of inclination, movement speed, release position, trolley wheel resistance, air resistance, temperature effects, and geographical considerations.
As a case study, we detail the findings from a theoretical model, validated through computer simulations, focusing on the specific conditions of a zipline constructed in Theth, Albania. Our results provide valuable insights into the design and safety protocols necessary for effective zipline operations.

The current product on the market offers a wide range of diverse profiles for producing windows that are made of different materials, width and order of grills depending on the profile. Within the framework of this research the windows with same dimensions shall be elaborated, those which are made of the same production capacity and use the same fittings but different types of PVC profiles. The aim is to prove what kind of influence the used profile has over the final quality of the product. For this research, two groups and six subgroups will be tested. In each subgroup, one tests five windows made of the same profile. The groups are divided according to the used fittings. The testing of the quality shall be conducted in accordance with the European norms EN 1026:2016 (Windows and doors – Air permeability – Test method), EN 1027:2016 (Windows and doors – Water tightness – Test method), EN 12211:2016 (Windows and doors – Resistance to wind load – Test method).