The nozzles of reactive–powered vechicles

V diplomskem delu smo izdelali in predstavili vozilo na reaktivni pogon, na katerem smo preučevali lastnosti šob. Naš namen je bil izdelati optimalno vozilo na reaktivni pogon, ki bo prevozilo čim daljšo razdaljo. Spremenljivi parametri, ki smo jih obravnavali, so: naklon šobe, premer odprtine šobe, dolžina šobe, oblika šobe, premer dovodne cevi, dolžina dovodne cevi in pogonsko sredstvo. Pri izdelavi smo bil z mislimi pri možnosti uporabe modela v pedagoške namene. Vozilo je enostavno za izdelavo, izdelano je iz gradiv, dostopnih na osnovnih šolah. Opisali smo tudi preprost model gibanja vozička, primeren nivoju znanja učencev osnovne šole. Vozilo je pri naših meritvah prevozilo največ 4 m, zato je primerno za uporabo v razredu.In the thesis we introduce the jet propulsion vehicle that we have developed in order to study the characteristics of the nozzles. Our aim was to create an optimal jet propulsion vehicle that traverses the longest distance. Several variable parameters are being discussed: the slope of the nozzle, the diameter of the nozzle, the length of the nozzle, the nozzle shape, the diameter of the intake pipe, the length of the intake tube and propellant. During the construction of the vehicle we also had in mind the usefulness of the model for teaching purposes. The vehicle is easy to make, it is made from materials available in the elementary schools. We describe a simple model of motion of the trolley on an appropriate level of knowledge of pupils in primary school. The longest path the constructed vehicle has traversed is around 4 m, making it suitable for use in the classroom