National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Production of Knives
Suchý, Jan ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
This theses deals with cold weapons topic. The first part describes historical development of European swords and weapons originating from them. Further on the thesis presents material analysis and comparison of steels used for cold weapons production. It also shows different production methods including a brief note about the difference between forged and gringed blade. Then the thesis outlines differences among various blade shapes and how these shapes define their cutting characteristics and usage. The closing part of the thesis deals with blade geometry and grinding technology.
Verification of model calculations for the Kaplan turbine design
Polák, M. ; Polák, Václav ; Hudousková, M.
In order to design a water turbine, the Theory of the Physical Similarity of Hydraulic Machines is used in technical practice. This principle has been known and used by manufacturers of turbines and pumps, but is not available to general public. This paper describes author's calculation program for turbine design that is well accessible to the widest possible range of users of mainly small hydropower sources. Based on the given hydraulic potential (water head and flowrate), the program determines the most suitable turbine type and calculates its main geometric parameters. In addition to numerical results, the program is also endowed with graphic output which renders in true scale hydraulic profiles of rotor blades and guide blades as well as the hydraulic profile of a spiral casing. The process of the Kaplan turbine design is used as an example in this paper. The comparisons of the calculated results with the verified standard 4-K-69 Kaplan turbine confirm the compliance of numerical results with reality.
Production of Knives
Suchý, Jan ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
This theses deals with cold weapons topic. The first part describes historical development of European swords and weapons originating from them. Further on the thesis presents material analysis and comparison of steels used for cold weapons production. It also shows different production methods including a brief note about the difference between forged and gringed blade. Then the thesis outlines differences among various blade shapes and how these shapes define their cutting characteristics and usage. The closing part of the thesis deals with blade geometry and grinding technology.

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