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Design of a device for measuring the center of gravity height of road vehicles
Hanych, Jaroslav ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This master's thesis deals with problems connected with measuring vehicle centre of gravity height. The research part summarizes generally known methods of measuring vehicle centre of gravity and moments of inertia. Essential part of this thesis is the design of a device for measuring the centre of gravity height of a road vehicle on a principle of measuring a period of oscillation. The height position of the platform of the device is adjustable through hydraulic cylinders. A stress-strain analysis of the design was executed through a combination of analytical methods and a finite element method. The process of measurement was described and an equation for determination of centre of gravity height was deduced. Error of measurement was estimated based on the knowledge of partial errors of measured values.
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Measurement of vehicle moments of inertia
Grác, David ; Hejtmánek, Petr (referee) ; Porteš, Petr (advisor)
This diploma thesis is concerned with selecting the appropriate method for determining the moment of inertia to the vertical, lateral and longitudinal axis through the centre of gravity of the vehicle. Using the special mechanical device, constructed on IAE was carried out repeated measurements of known mass properties in each axis. With the aid of obtained data was calculated measurement error. To compare the resulting values was created MBS model.
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Student Formula Arrangement Design
Niesner, Martin ; Svída, David (referee) ; Ramík, Pavel (advisor)
The rules and specifications of competition Formula Student are the main guidelines at frame design of students' formula. This diploma work discusses frame safety and structural requirements and also requirements on mounting of engine, single axles, rear-axle differential, engine intake and exhaust system, fuel tank, control elements, and so on. In the final parts of this diploma work analysis of maximum state of stress in material of on-load frame is made and total frame torsional rigidity is calculated. Total frame torsional rigidity is compared with those of Formula Ford and with other variants of Formula Student.
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Measurement of Vehicle CG Height Position
Fedra, Tomáš ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
This diploma thesis deals with measurement of vehicle centre of gravity height position. All methods for measurement of CG height position are described in the first part. The second part deals with designing of device for measurement of CG height. This measurement device is analysed by Finite Element Method. The vehicle is tilt by hydraulic system. The third part shows the best tilt angle for minimal error of CG height. At the end, there is described a measuring procedure for designed device.
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Design of Device for Vehicle Center of Gravity Height Measurement
Rektořík, Jiří ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
The objective of this diploma thesis is the design of a device that measures the vehicle’s centre of gravity height position. The first part defines individual methods of measurement using various measuring equipment. The next part deals with the definition of requirements for the device and the definition of the design. A stress-strain analysis was executed for selected components. This diploma thesis describes the preparation process of the vehicle and the device for the measurement. The next part is dedicated to the design of the measuring chain and to the evaluation of the results. The thesis concludes with a theoretic analysis of the measurement inaccuracy.
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Vehicle Center of Gravity Measurement
Štěpánek, Tomáš ; Rasch, František (referee) ; Blaťák, Ondřej (advisor)
This diploma thesis is devoted to problems of measurement centre of gravity position. At the beginning diploma thesis is created summary of methods to measuring moment of inertia and position measuring of centre of gravity of vehicle. Proposal is in-process on the basis method weighing on oblique position. And measurement is possible in Institute of automotive engineering in Brno. Is proposed measuring platform and preparative for obstruct changes of centre of gravity position at measuring. Measuring procedure is described and is derived formula toward calculation position of gravity centre of vehicle. To troubleshooting parts of platform are elaborate solidity calculations. In final parts diploma thesis are mentioned results from these measurements. Drawing documentation of platform and programme for calculation of centre of gravity of vehicle is enclosed in diploma thesis.
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Modification of the landing gear of the Irbis aircraft
Forman, Tomáš ; Vaněk, František (referee) ; Šplíchal, Jan (advisor)
This master thesis deals with the landing gear rebuild from tail gear to nose gear of the M-4 Irbis aircraft. The first chapter presents the aircraft in its current state and includes some technical data, too. The theoretical information about types of landing gears, its characteristics, pros and cons and the typical representatives for each type of landing gear are mentioned in the second chapter. The third chapter is about landing gear loads that occur during landing and about the load calculation according to UL 2 regulation. The following chapter shows the construction of the new landing gear, including some of the suggested, but not realised, designs. In the fifth chapter, there is a landing gear strength calculation of some of the gear components. The calculation is analytical and then uses FEM. The very last chapter then shows the effect of new landing gear on the centre of gravity in its extreme positions. The chapter also compares aircraft masses with both landing gears.
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Design for building an electric drive into a Orlican VSO-10 Gradient glider
Vančo, Miroslav ; Juračka, Jaroslav (referee) ; Sklenář, Filip (advisor)
This diploma thesis deals with the design of building electric propulsion (FES) into an Orličan VSO-10 Gradient glider. The introduction is focused on problem statement with main challenges of building electric propulsion into gliders. The research section is devoted to current situation on the market of gliders with overview of the propulsion systems and their basic parameters. The most appropriate configuration of the propulsion system is selected, based on performance calculations, regulations, and requirements. For final configuration, installation into the glider construction is designed, with respect to actual regulations. In the last part, cost of propulsion and installation is calculated.
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Collection of solved problems from statics II
ŠIMANOVÁ, Petra
The thesis is intended as a brief teaching text for the course Technical Mechanics I at the Faculty of Education of the University of South Bohemia in České Budějovice. It includes the following topics: truss structures, centre of gravity, passive resistances, friction, pulleys and pulley systems. The theory is supplemented by examples with annotated solutions, in the case of truss structures the numerical solution is accompanied by graphical solutions. The work can be used by the teachers of the subject in preparation for classes as well as by students in self-study or preparation for various exams or tests.
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Modification of the landing gear of the Irbis aircraft
Forman, Tomáš ; Vaněk, František (referee) ; Šplíchal, Jan (advisor)
This master thesis deals with the landing gear rebuild from tail gear to nose gear of the M-4 Irbis aircraft. The first chapter presents the aircraft in its current state and includes some technical data, too. The theoretical information about types of landing gears, its characteristics, pros and cons and the typical representatives for each type of landing gear are mentioned in the second chapter. The third chapter is about landing gear loads that occur during landing and about the load calculation according to UL 2 regulation. The following chapter shows the construction of the new landing gear, including some of the suggested, but not realised, designs. In the fifth chapter, there is a landing gear strength calculation of some of the gear components. The calculation is analytical and then uses FEM. The very last chapter then shows the effect of new landing gear on the centre of gravity in its extreme positions. The chapter also compares aircraft masses with both landing gears.
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