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Measuring the velocity of projectiles by laser beam
Šmerda, Jaroslav ; Šebesta, Jiří (referee) ; Lukeš, Zbyněk (advisor)
Muzzle velocity is the speed of bullets, guns at the moment it leaves the barrel of a gun. Since this is a parameter related to the storyline, which takes place only shortly after the bullet leaves the barrel, this figure is the transition ballistics. The aim of this work is to design and construct a device for measuring the speed. Measurement consists in measuring the interval at which the bullet crosses the two laser beams. From this data, the performance will be calculated.
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Measuring the velocity of projectiles by laser beam
Šmerda, Jaroslav ; Šebesta, Jiří (referee) ; Lukeš, Zbyněk (advisor)
Muzzle velocity is the speed of bullets, guns at the moment it leaves the barrel of a gun. Since this is a parameter related to the storyline, which takes place only shortly after the bullet leaves the barrel, this figure is the transition ballistics. The aim of this work is to design and construct a device for measuring the speed. Measurement consists in measuring the interval at which the bullet crosses the two laser beams. From this data, the performance will be calculated.
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Sport - speed paintball
Mareš, Pavel ; Fiala, Miloš (advisor) ; Opelka, Luboš (referee)
Title: Sport/speed paintball Objectives: To Introduce the readers to competitive paintball and its basic set of rules Methods: Available materials regarding this topic were used Results: Overview of competitive paintball, its history, description of equipment, set of rules and ballistic parameters of a paintball marker Keyworlds: sport, population, safe, ballistics, training
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Parametrization of substitute material in caverns standard and special military munitions
Mucha, Pavel ; Jelen, Karel (advisor) ; Barták, Erik (referee)
Title of thesis: Ballistic cavity origin characterisation; auxiliary materials of a standardised or a special military ammunition. Aim of thesis: The goal of this work is to provide a regularising framework suggesting structural changes of the auxiliary materials in the impact zone of the various ammunition. Methods: A ballistic experiment based upon the piercing test of various ammunition types. For these tests different barrier materials were used (e.g. glycerine, soap, ballistic gel). A comparative study of the various physical aspects of the cavities was exercised. Several diagnostic methods such as dimensions verification, water volume measurement, projectile speed radar check, computer tomography or the high speed camera were used to determine the secondary cavity specifics. Results: This thesis identified several key parameters determining projectile behaviour in the auxiliary materials. The major determinants were: speed, position or homogeneity of the projectile on the impact. However the major parameter defining the "injury level" was the concluded that the highest Injury level has the prohibited "fragmentation effect ammunition". On the other hand it was pointed out that so called "Black Mamba" projectiles have lower injury effect, although manufactore claims otherwise. Key words:...
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Speed meassurement of the bullet in the physics practicum
SCHOBEROVÁ, Zdeňka
The main subject of this bachelor{\crq}s thesis is the laboratory measurement of an airgun bullet velocity. Elementary ideas of ballistics are theoretically discussed and, afterwards, two elementary measurement methods are described in detail and experimentally verified. First method is based on a couple of rotating discs and the second one is based on the energy conservation law of a ballistic pendulum. In the thesis there are presented both the description and the results of these measurements.
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