KAP SPEARGUNS SIMULATOR

The simulator was published as a website running Python 3 it can be accessedĪnd used by anyone with a web browser at no cost. Would further expand understanding of speargun dynamics and simulator Part 12 outlines three areas of research and one survey that Simulation and demonstrated how the simulator could be used to improve Parts 10 & 11 summarise the findings and performance trends uncovered by the Shaft buckling and bending were compared and discussed to a limited extent. These coefficients and increase simulator accuracy Part 11 outlines the testing COVID-19 prevented testing to empirically determine Shaft velocity at various ranges was then calculated using an estimated dragĬoefficient and penetration at these ranges was calculated using an estimatedįish tissue cavity strength. Speargun geometry are used to solve for component velocities.

The systemĮnergy from the rubber function and component masses calculated from Momentum and energy balances were used to derive equations of motion for theĭynamic behaviour of conventional, roller and inverted spearguns. Used to develop a function that determines the potential energy stored by 14, 16,ġ7 or 18mm natural rubber bands given any speargun geometry. Testing of natural rubber was conducted to determineĭissipation losses given an assumed 30 minute load case. This investigation outlines the current technical state of spearguns and key The results of this study also show the correct setup of this system in order to achieve the maximum performance capability. Roller guns provide more opportunities for adjustment than traditional spearguns and, because of this versatility, a single model of a roller speargun can be adjusted to suit the power requirements and strength of the individual who uses it. Because of this increased power, the length of the speargun could be reduced without compromising on range. This system also had the potential for delivering more energy to the spear, resulting in a greater initial velocity. This model was then used to show that an improved barrel profile featuring integrated rails would make the barrel stiffer, and that by using a roller power system, the barrel flex could be reduced. This provided a basis to compare and create alternative designs.įrom this study it was found that the theoretical model created was suitable for predicting how a speargun would perform. These factors were evaluated and used to construct a theoretical model using engineering principles. The factors which had the largest bearing on the performance of the speargun were the stiffness of the barrel and the power of the rubber bands. This analysis measured the initial velocity of the spear and showed other factors which affect performance. This data was then used to conclude on and justify recommendations to make a more suitable/efficient speargun design.Ī slow motion video analysis formed part of an experimental examination of a benchmarked speargun design. Experimental and theoretical analytic methods were used to quantify the performance of speargun design. This project analysed the factors that affect the performance of spearguns.

Kap spearguns