Browsing by Author "De Villiers, Daniel"

Now showing 1 - 3 of 3
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    Empirical survey of the application of commercial-graded Lithium Polymer batteries in military systems in conjunction with solar panels and fuel cells
    (2008-11) Roux, A; Giesler, Achmed; De Villiers, Daniel
    This paper presents the results of an empirical survey into the comparative characteristics of commercial NiCd, Lithium-ion and Lithium Polymer batteries when applied in a range of man portable military radios. The focus is on when the expected load currents varies significantly across the battery¿s cycle. The study also considers the use of solar panels and fuel cells for in-field battery replenishment. Limited environmental (temperature) stress screening was performed. Several pros and cons will be discussed, but in general the commercial product stood up well in the warmer climates and (being commercial products) with a good cost to performance ratio
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    Improved mortar set-up technique
    (Omega Conferences & Events, 2010-05) De Villiers, Daniel
    This paper describes a unique way of setting up a mortar with minimum of extra equipment. A mortar can be set-up, by using the current mechanical mortar sight and a prismatic mirror with a bearing sensor. This concept focuses directly on one of the most cumbersome aspects of a mortar set-up, namely the use of aiming posts. The prismatic mirror and bearing dials is described as well as the required setup procedures. The measurement of effectiveness, of a mortar system, showed that the concept has many advantages.
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    Improved mortar setup technique
    (2008-10) De Villiers, Daniel
    Mortars will still play an important roll in modern warfare. This paper describes a unique way of setting up a mortar with minimum of extra equipment. A mortar can be set-up, by using the current mechanical mortar sight and a prismatic mirror with a bearing sensor. This concept focuses directly on one of the most cumbersome aspects of a mortar set-up, namely the use of aiming posts. The prismatic mirror and bearing dials is described as well as the required setup procedures. The measurement of effectiveness, of a mortar system, showed that the concept has many advantages.